МОДИФИЦИРОВАННЫЙ ПОЛИМЕР НА ОСНОВЕ СОПРЯЖЕННОГО ДИЕНА И ВКЛЮЧАЮЩАЯ ЕГО КАУЧУКОВАЯ КОМПОЗИЦИЯ

Настоящее изобретение относится к модифицированному полимеру на основе сопряженного диена, а также к каучуковой композиции для элементов шин или резиновых изделий. Модифицированный полимер на основе сопряженного диена содержит полученную из модифицированного мономера функциональную группу формулы где R2 представляет собой алкенильную группу от 2 до 10 атомов углерода, и содержит функциональную группу, полученную из модификатора на основе аминоалкоксисилана по меньшей мере на одном его конце. Модификатор на основе аминоалкоксисилана представляет собой соединение формулы в которой Ra1 и Ra4 каждый независимо представляют собой простую связь или алкиленовую группу, имеющую от 1 до 10 атомов углерода, Ra2 и Ra3 каждый независимо представляют собой алкильную группу, имеющую от 1 до 10 атомов углерода, Ra5 представляет собой алкильную группу, имеющую от 1 до 10 атомов углерода, или алкилсилильную группу, замещенную алкильной группой, имеющей от 1 до 10 атомов углерода, n1 означает целое число ...

МОДИФИЦИРОВАННЫЕ ПОЛИМЕРНЫЕ КОМПОЗИЦИИ

Настоящее изобретение относится к способу непрерывного получения модифицированных эластомерных полимеров, включающему стадии: (i) обеспечение наличия и полимеризация по меньшей мере одного сопряженного диенового мономера, выбираемого из 1,3-бутадиена, 2-алкил-1,3-бутадиена, 2-метил-1,3-бутадиена, 2,3-диметил-1,3-бутадиена, 1,3-пентадиена, 2,4-гексадиена, 1,3-гексадиена, 1,3-гептадиена, 1,3-октадиена, 2-метил-2,4-пентадиена, циклопентадиена, 2,4-гексадиена и/или 1,3-циклооктадиена, и, необязательно, одного или нескольких ароматических виниловых мономеров при температуре 110°С или ниже в органическом растворителе в присутствии активного инициатора и соединения в соответствии с формулой 1, где О в формуле 1 представляет собой кислород, группы Rи Rв формуле 1 каждая независимо представляют собой водород или алкильную группу, предпочтительно - водород или C-Cалкильную группу; группы R, R, R, R, Rи R, каждую независимо, выбирают из водорода или алкильной группы, предпочтительно - водорода или ...

СПОСОБ ПОЛУЧЕНИЯ ПОЛИМЕРОВ, ПОЛИМЕРНЫХ КОМПОЗИЦИЙ И ИЗДЕЛИЙ, СОДЕРЖАЩИХ УКАЗАННЫЕ ПОЛИМЕРЫ

Изобретение относится к сопряженным диолефиновым полимерам и способам их получения. Предложен способ получения полимера со стабильными вязкостью по Муни и молекулярной массой, при котором сопряженный диолефин вступает в реакцию в углеводородном растворителе в присутствии инициатора с образованием полимера, после чего к полимеру присоединяют алкоксисилановые концевые функционализирующие группы. Затем к полимеру добавляют стабилизирующий агент, представляющий собой триарилсиланол, необязательно в присутствии углеводородного масла, и подвергают десольватации. Технический результат – полученный полимер имеет стабильную вязкость по Муни и молекулярную массу, сохраняющиеся в течение длительного времени. 4 н. и 10 з.п. ф-лы, 1 ил., 1 табл., 5 пр.

ЭЛАСТОМЕРНЫЕ ПОЛИМЕРЫ, МОДИФИЦИРОВАННЫЕ СУЛЬФИДОМ

Изобретение относится к несшитым эластомерным полимерам, эластомерным композициям и изделиям. Эластомерная композиция включает полимер, полученный из первой композиции. Первая композиция содержит несшитый эластомерный полимер, полученный из олефина, сопряженного олефина и их комбинации, и сульфидного модификатора. Модификатор представлен формулой 1: AS-Y-Zm, где Y представляет собой (C12-С100)аралкил, (С12-С100)арил, (С12-С100)алкил или (C12-C100) простой диалкиловый эфир(алкил-О-алкил), и где каждый из них необязательно может быть замещенным (С1-С4)алкилом, (С1-С4)алкокси, (С7-С16)арилом, (С7-С16)аралкилом, нитрилом, амином, NO2, алкокси или тиоалкилом; S представляет собой серу; А представляет собой водород, -(S)p-R1 или -MR2R3R4; Z представляет собой -SH, -S-MR5R6R7, -S-(S)p-R8, -NR9R10, -NR11COR12, -O-CO-R13, -NCO или -COOR14; М представляет собой кремний или олово; N представляет собой азот; О представляет собой кислород; m представляет собой число один, два или три; р представляет ...

ТРИАЛКИЛСИЛИЛОКСИ-ТЕРМИНИРОВАННЫЕ ПОЛИМЕРЫ

Настоящее изобретение относится к полимерам, содержащим функциональные концевые группы, и их получению. Способ включает процесс анионной полимеризации в растворе, в котором одну или несколько бис(триалкилсилил)перекисей (функционализирующие реагенты) общей формулы (II)где R, R, Rмогут быть одинаковыми или различными и означают алкил, циклоалкил или аралкил, которые могут содержать гетероатомы, такие как О, N, S, Si, в виде чистого вещества, раствора или суспензии добавляют к полимерам с реакционноспособными концами полимерных цепей, выбранным из группы полибутадиена, полиизопрена, сополимера бутадиена и изопрена, сополимера бутадиена и стирола, сополимера изопрена и стирола или тройного полимера бутадиена, изопрена и стирола. Технический результат - разработка полимеров с функциональными концевыми группами подходящего стерического экранирования для получения гидрокси-терминальных полимеров. 4 з.п. ф-лы, 2 табл., 2 пр.

СТАБИЛИЗАЦИЯ ПОЛИМЕРОВ, СОДЕРЖАЩИХ ГИДРОЛИЗУЕМЫЕ ФУНКЦИОНАЛЬНЫЕ ГРУППЫ

Изобретение относится к способу стабилизации полимера при возрастании вязкости по Муни. Способ включает полимеризацию сопряженного диенового мономера, необязательно с мономером, сополимеризуемым с ним, с литийорганическим инициатором для получения полимерного «клея», имеющего «живой» в нем полимер, реагирование «живого»полимера с функционализирующим агентом, содержащим гидролизуемую функциональную группу. Способ включает введение стабилизатора в указанный полимер, где стабилизатор определен формулой,в которой χ представляет собой гидролизуемую группу, из которой в результате гидролиза образуется фрагмент кислотного остатка, а каждый R, Rи Rнезависимо представляет собой атом галогена, гидрокарбильную группу, гидрокарбоксилатную группу или гидрокарбилоксигруппу. Выделяют функционализированный полимер. Изобретение позволяет повысить устойчивость к возрастанию вязкости по Муни. 8 з.п. ф-лы,4 табл., 7 пр.

СМЕСЬ ФУНКЦИОНАЛИЗИРОВАННЫХ ПОЛИМЕРОВ ДЛЯ ШИН

Изобретение относится к смеси полимеров. Описана смесь полимеров, приемлемая для получения шины, протектора шины, боковой стенки шины, ленты конвейера, уплотнителя или рукава, состоящая из (a) от 60 до 96% мас. первого эластомерного полимера, (b) от 4 до 35% мас. второго полимера и, необязательно, (c) от 0 до 13% мас. одного или более масла-наполнителя(лей); причем первый эластомерный полимер может быть получен (I) анионной полимеризацией по меньшей мере одного мономера конъюгированного диена и, необязательно, одного или более α-олефинового мономера(ов) в присутствии инициатора полимеризации в органическом растворителе и, необязательно, (II) модификацией концов цепи полимера, полученного на этапе (I), путем добавления и проведения реакции по меньшей мере одного соединения, представленного любой из формул от (1) до (3) или от (11) до (15), как определено ниже; причем второй эластомерный полимер может быть получен (i) анионной полимеризацией в присутствии инициатора полимеризации в органическом ...

ПОЛИМЕРЫ, МОДИФИЦИРОВАННЫЕ АМИНОСИЛАНОМ

Изобретение относится к модифицированным макромолекулярным соединениям, которые могут быть получены путем использования определенных соединений аминосилановых инициаторов полимеризации и, необязательно, соединений, модифицирующих концы цепей. Изобретение также относится к полимерным композициям, содержащим такие модифицированные макромолекулярные соединения, и к использованию таких композиций в получении вулканизированных (сшитых) эластомерных полимерных композиций и изделий. Техническим результатом является улучшение эксплуатационных характеристик получаемых изделий. 10 н. и 36 з.п. ф-лы, 11 табл.

НОВЫЕ АРМИРУЮЩИЕ МАТЕРИАЛЫ, ЭЛАСТОМЕРНЫЕ КОМПОЗИЦИИ И ШИНЫ ДЛЯ КОЛЕС ТРАНСПОРТНЫХ СРЕДСТВ, ИХ СОДЕРЖАЩИЕ

Настоящее изобретение относится к способу получения дериватизированного диоксида кремния (SIL-A-B), дериватизированному диоксиду кремния (SIL-A-B), эластомерной композиции, вулканизируемой эластомерной композиции шины для колес транспортного средства, элементу шины для колес транспортного средства и шине для колес транспортного средства. Данный способ включает взаимодействие силанизированного диоксида кремния (SIL-A), соединения формулы (В1) (RSiO1,5)nи радикального инициатора (D). Силанизированный диоксид кремния (SIL-A) получают взаимодействием диоксида кремния (С), силанизирующей добавки формулы (А): (R1)3Si-X и необязательно кислотного катализатора в органическом растворителе. Эластомерная композиция содержит 100 ч./100 ч. каучука по меньшей мере одного твердого диенового эластомерного полимера (Е) и 3 ч./100 ч. каучука дериватизированного диоксида кремния (SIL-A-B). Эластомерная композиция содержит 100 ч./100 ч. каучука твердого диенового эластомерного полимера (Е), 5 ч./100 ч. каучука ...

СМЕСИ СИЛАНОВ И СПОСОБ ПРИГОТОВЛЕНИЯ ТАКИХ СМЕСЕЙ СИЛАНОВ

Изобретение относится к смесям силанов, применяемых при изготовлении резиновых смесей. Предложена смесь силанов, содержащих силан формулы I и силан формулы II, где R1 имеют одинаковые или разные значения и представляют собой С1-С10алкоксигруппы, R2 отсутствуют, R3 и R4 имеют одинаковые или разные значения и представляют собой неразветвленную, насыщенную алифатическую двухвалентную углеводородную группу с С1-С30, х обозначает целое число от 1 до 2, при этом в том случае, когда х обозначает 1, R5 представляет собой водород или группу -C(=O)-R8, где R8 представляет собой С1-С20алкильную группу и n обозначает 1, а в том случае, когда х обозначает 2, R5 представляет собой -(R4-S)n-R3-Si(R1)y(R2)3-y и n обозначает 0 или 1, и у представляют собой 3, при этом молярное соотношение между силаном формулы I и силаном формулы II составляет от 15:85 до 90:10. Предлагаемую в изобретении смесь силанов можно приготавливать путем смешения силанов формулы I и силанов формулы II. Технический результат – предложенные ...

МОДИФИЦИРОВАННЫЕ ЭЛАСТОМЕРНЫЕ СОПОЛИМЕРЫ С НИЗКИМ СОДЕРЖАНИЕМ ВИНИЛОВЫХ СВЯЗЕЙ

Изобретение относится к модифицированному эластомерному полимеру. Модифицированный эластомерный полимер получают посредством приведения в контакт живого анионного эластомерного полимера с конкретным модифицирующим концевую группу цепи соединением, причем живой анионный эластомерный полимер содержит по меньшей мере 75 и менее чем 99 мас.% бутадиеновых элементарных звеньев и более чем 1 и менее чем 25 мас.% стирольных элементарных звеньев и характеризуется содержанием виниловых связей от 2 до менее чем 10% исходя из полибутадиеновой фракции живого анионного эластомерного полимера. Изобретение позволяет улучшить сцепление шины при применении вулканизированного модифицированного полимера с мокрым дорожным покрытием, повысить устойчивость к истиранию, улучшить устойчивость к качению. 4 н. и 21 з.п. ф-лы, 4 табл.

СИЛАНСОДЕРЖАЩИЕ ПОЛИМЕРЫ С КАРБОКСИЛЬНЫМИ КОНЦЕВЫМИ ГРУППАМИ

Изобретение относится к полимерам с функционализованными концевыми группами, их получению и применению. Предложены полимеры с функционализованными концевыми группами, где полимеры являются диеновыми (со)полимерами, имеющими на конце полимерной цепи силансодержащую карбоксильную группу формулы (I), в которой R, Rявляются одинаковыми или разными алкильными остатками, R, Rозначают H, A означает двухвалентный органический остаток, который наряду с C и H содержит атом S, где силансодержащая карбоксильная группа связана с цепью полимера через один или несколько двухвалентных структурных элементов, производных от циклосилоксанов. Предложен также полимер, концевые группы которого имеют вид силансодержащих карбоксилатов, способ получения заявленных полимеров, использование в этом способе силолактонов, а также применение указанных полимеров для получения вулканизирующихся композиций, соответствующие композиции, их применение для получения шин и полученные шины. Технический результат – предложенные ...

РЕЗИНОВАЯ КОМПОЗИЦИЯ, ВУЛКАНИЗИРОВАННАЯ РЕЗИНА И ШИНА

Изобретение относится к резиновым композициям для получения шин. Предложена резиновая композиция, включающая каучуковый компонент, содержащий натуральный каучук, полибутадиеновый каучук и стирол-бутадиеновый сополимерный каучук, и от 50 до 90 частей по массе наполнителя, содержащего диоксид кремния в расчете на 100 частей по массе каучукового компонента, в котором масса n натурального каучука в каучуковом компоненте составляет 40% по массе или больше, масса n, масса b полибутадиенового каучука и масса s стирол-бутадиенового сополимерного каучука удовлетворяют соотношению: s ≤ b ≤ n при условии, что, когда n = b, s < b, и 50% по массе или больше диоксида кремния содержатся в фазе, включающей полибутадиеновый каучук и стирол-бутадиеновый сополимерный каучук, причем либо один, либо оба из полибутадиенового каучука и стирол-бутадиенового сополимерного каучука модифицированы модифицирующей функциональной группой, которая содержит по меньшей мере один атом, выбранный из группы, состоящей из атома ...

ОПРЕДЕЛЕНИЕ СТЕПЕНИ РАЗВЕТВЛЕНИЯ

Изобретение относится к способу определения степени разветвления модифицированных полимеров. Способ определения степени разветвления модифицированных диеновых полимеров, у которых степень разветвления после полимеризации является увеличенной, включает определение вязкости по Муни (ML 1+4 при 100°C) модифицированных диеновых полимеров, обработку преобразующей смесью общей формулы (I) R¹-S-S-R¹ с образованием дополнительно модифицированных диеновых полимеров. Вязкость по Муни (ML 1+4 при 100°C) полимеров определяется до и после обработки преобразующей смесью, и определяется степень разветвления согласно уравнению. Изобретение позволяет улучшить определение степени разветвления модифицированных диеновых полимеров, которые используют в резиновых смесях с улучшенными показателями износа. 14 з.п. ф-лы, 5 пр.

АМИНОСОДЕРЖАЩИЕ ПОЛИМЕРЫ С КОНЦЕВЫМИ КАРБИНОЛЬНЫМИ ГРУППАМИ

Изобретение относится к диеновым полимерам, способу их получения, их применению, к вулканизующимся каучуковым композициям, их применению, а также к шине и формованным изделиям, содержащим каучуковую композицию в вулканизованной форме. Диеновые полимеры содержат в начале полимерных цепей третичные аминогруппы формулы (II), а также имеют по концам полимерных цепей силансодержащие карбинольные группы формулы (III) в виде солей металлов. Причем R, Rявляются одинаковыми или различными и представляют собой алкильный, циклоалкильный, арильный, алкарильный и аралкильный радикалы, которые могут содержать гетероатомы, такие как кислород, азот, сера и/или кремний. В указанных формулах (II) и (III) Z означает двухвалентный органический радикал, который может содержать, кроме атомов углерода и водорода, гетероатомы, такие как кислород, азот, сера и/или кремний. Причем R, R, R, Rявляются одинаковыми или различными и означают водород, алкильный, циклоалкильный, арильный, алкарильный и аралкильный радикалы ...

Модифицированный полимер на основе сопряженного диена и включающая его резиновая композиция

Настоящее изобретение относится к модифицированному полимеру на основе сопряженного диена, а также к резиновой композиции, содержащей данный полимер. Модифицированный полимер на основе сопряженного диена включает звено, полученное из модификатора, представляющего собой аминосодержащее алкоксисилановое соединение, содержащее три или более алкоксигруппы, связанные с кремнием; нефункциональную цепь, образующую кремний-углеродную связь с одной стороны звена, полученного из модификатора, и включающую повторяющееся звено, полученное из мономера на основе сопряженного диена; и функциональную цепь, образующую кремний-углеродную связь с другой стороны звена, полученного из модификатора, и включающую два или более звеньев, полученных из мономера, содержащего N-функциональную группу. Полученный полимер имеет превосходное сродство с наполнителем, а также превосходную обрабатываемость и стойкость к истиранию. 2 н. и 7 з.п. ф-лы, 7 табл., 3 пр.

ПОЛИМЕРЫ СО СНИЖЕННОЙ ТЕКУЧЕСТЬЮ НА ХОЛОДЕ С ХОРОШЕЙ ПЕРЕРАБАТЫВАЕМОСТЬЮ

СПОСОБ ПОЛУЧЕНИЯ МОДИФИЦИРОВАННОГО ДИЕНСОДЕРЖАЩЕГО КАУЧУКА, КАУЧУК И РЕЗИНОВАЯ КОМПОЗИЦИЯ НА ЕГО ОСНОВЕ

Изобретение относится к способам получения каучука растворной полимеризацией. Предложен способ получения каучука, включающему (со)полимеризацию, по меньшей мере, одного диенового мономера, и, необязательно, по меньшей мере, одного винилароматического мономера, и винилкремниевого соединения в присутствии функционализирующего литиевого инициатора, и модификацию получаемого (со)полимера полифункциональным кремнийсодержащим агентом. Функционализирующий литиевый инициатор получают взаимодействием литийорганического соединения, вторичного амина и диенсодержащего соединения. Также предложены каучуки, полученные указанным способом, резиновые композиции и резины на их основе, полуфабрикаты и шины, включающие подобный каучук. Технический результат – предложенный способ позволяет получать резиновые композиции и резины на их основе, характеризующиеся улучшенным комплексом гистерезисных свойств. 7 н. и 33 з.п. ф-лы, 3 табл., 11 пр.

КАРБАМИДСОДЕРЖАЩИЕ СИЛАНЫ, СПОСОБ ИХ ПОЛУЧЕНИЯ И ИХ ПРИМЕНЕНИЕ

ПРОЦЕСС УДАЛЕНИЯ СИЛАНОЛА ИЗ КОМПОЗИЦИИ МОДИФИЦИРОВАННОГО ПОЛИМЕРА

... 1. Способ получения полимера, выбранного из следующих: (a) модифицированного интерполимера, содержащего в полимеризованной форме, сопряженный диен и ароматический альфа-олефин, или (b) модифицированного полимера, содержащего, в полимеризованной форме, сопряженный диен; включающий, по крайней мере, следующие стадии:полимеризацию мономеров, содержащих, по крайней мере, один сопряженный диеновый мономер, по крайней мере, в одном реакторе полимеризации, в присутствии, по крайней мере, одного растворителя для образования полимера,возможно, связывание части полимерных цепей с использованием, по крайней мере, одного агента сочетания,модификацию полимера, по крайней мере, одним модификатором, по крайней мере, в одном реакторе в присутствии, по крайней мере, одного растворителя для образования раствора модифицированного полимера;возможно, контакт раствора модифицированного полимера, по крайней мере, с одним протон-донорным соединением;контакт раствора модифицированного полимера с водой;удаление, ...

ЭЛЕМЕНТ ШИНЫ, ГИДРИРОВАННЫЙ ПОЛИМЕР НА ОСНОВЕ СОПРЯЖЕННОГО ДИЕНА И ПОЛИМЕРНАЯ КОМПОЗИЦИЯ

МОДИФИЦИРОВАННЫЕ ПОЛИМЕРНЫЕ КОМПОЗИЦИИ

... 1. Композиция, содержащая модифицированный полимер, включающая:по меньшей мере одну разветвленную модифицированную полимерную макромолекулу, содержащую по меньшей мере одну из структур (ib1), (ib2), (ib3) или (ib4); ипо меньшей мере одну линейную модифицированную полимерную макромолекулу, содержащую по меньшей мере одну из структур (iib1) или (iib2);где по меньшей мере одна разветвленная модифицированная полимерная макромолекула и по меньшей мере одна линейная модифицированная полимерная макромолекула каждая, независимо, дополнительно включает по меньшей мере одну аминогруппу, выбранную из группы, состоящей из:и их комбинаций;гдеN обозначает атом азота;С обозначает атом углерода;Н обозначает атом водорода;Е является по меньшей мере двухвалентным и выбран из группы, состоящей из: a) (C-C)-алкила, который может быть замещен одной или несколькими из следующих групп: аминогруппы, RRRSi- или RRRSi-аминогруппы; (С-C)-арила; (C-C)-аралкила; b) атома кислорода (О); c) атома серы (S); d) N-CHR-CR ...

ПОЛИМЕРЫ, ФУНКЦИОНАЛИЗОВАННЫЕ НИТРИЛЬНЫМИ СОЕДИНЕНИЯМИ, ИМЕЮЩИМИ ЗАЩИЩЕННУЮ АМИНОГРУППУ

... 1. Способ получения функционализованного полимера, включающий стадии:(i) полимеризации мономера с использованием анионного инициатора для получения реакционно-способного полимера; и(ii) проведения реакции между реакционно-способным полимером и нитрильным соединением, имеющим защищенную аминогруппу, где защищенная аминогруппа непосредственно присоединена к фрагменту, выбираемому из группы, состоящей из ациклических фрагментов, гетероциклических фрагментов и неароматических циклических фрагментов.2. Способ по п.1, в котором защищенную аминогруппу выбирают из группы, состоящей из бис(тригидрокарбилсилил)амино, бис(дигидрокарбилгидросилил)амино, 1-азадисила-1-циклогидрокарбильной, (тригкдрокарбилсилил)(гидрокарбил)амино, (дигидрокарбилгидросилил)(гидрокарбил)амино, 1-аза-2-сила-1-циклогидрокарбильной, дигидрокарбиламино и 1-аза-1-циклогидрокарбильной групп.3. Способ по п.1, в котором нитрильное соединение, имеющее защищенную аминогруппу, может быть получено из нитрильного соединения, выбираемого ...

ТРИАЛКИЛСИЛИЛОКСИ-ТЕРМИНИРОВАННЫЕ ПОЛИМЕРЫ

... 1. Содержащий функциональные концевые группы полимер, отличающийся тем, что на концах цепи имеет триалкилсилилокси-группу формулы (I),причем R, R, Rмогут быть одинаковыми или различными и представляют собой алкил, циклоалкил или аралкил, которые могут содержать гетероатомы, такие, как O, N, S, Si.2. Содержащий функциональные концевые группы полимер по п.1, отличающийся тем, все остатки R одинаковы.3. Содержащий функциональные концевые группы полимер по п.2, отличающийся тем, что остатки R представляют собой н-алкиловые заместители, предпочтительно метиловые группы.4. Содержащий функциональные концевые группы полимер по п.3, отличающийся тем, что он имеет концевые гидрокси-группы, полученные путем гидролиза концевых групп формулы (I).5. Содержащий функциональные концевые группы полимер по п.1 или 4, отличающийся тем, что он представляет собой диеновый полимер или получаемый путем сополимеризации диенов с винилароматическими мономерами диеновый сополимер.6. Содержащий функциональные концевые ...

ПОЛИМЕРЫ, ФУНКЦИОНАЛИЗИРОВАННЫЕ НИТРИЛЬНЫМИ СОЕДИНЕНИЯМИ С ЗАЩИТНОЙ АМИНОГРУППОЙ

... 1. Способ получения функционализированного полимера, включающий стадии:(i) полимеризации мономера с координационным катализатором для формирования реакционноспособного полимера и(ii) взаимодействия реакционноспособного полимера с нитрильным соединением, содержащим защищенную аминогруппу.2. Способ по п.1, в котором защищенная аминогруппа выбрана из группы, состоящей из бис(тригидрокарбилсилил)амино, бис(дигидрокарбилгидросилил)амино, 1-аза-дисила-1-циклогидрокарбильной, (тригидрокарбилсилил)(гидрокарбил)амино, (дигидрокарбилгидросилил)(гидрокарбил)амино, 1-аза-2-сила-1-циклогидрокарбильной, дигидрокарбиламино и 1-аза-1-циклогидрокарбильной групп.3. Способ по п.1, в котором нитрильное соединение, содержащее защищенную аминогруппу, определяется формулой Iгде Rявляется двухвалентной группой и каждый Rи Rнезависимо является одновалентной органической группой или гидролизуемой группой или Rи Rобъединяются для формирования двухвалентной органической группы, или нитрильное соединение, содержащее ...

СПОСОБ ПОЛУЧЕНИЯ МОДИФИЦИРОВАННОГО ДИЕНОВОГО КАУЧУКА, ПОЛУЧАЕМОГО ПОЛИМЕРИЗАЦИЕЙ В РАСТВОРЕ, ПОДЛЕЖАЩЕГО СМЕШИВАНИЮ С ДИОКСИДОМ КРЕМНИЯ, И КАУЧУКОВОЙ КОМПОЗИЦИИ, СОДЕРЖАЩЕЙ ЕГО

ЭЛАСТОМЕРНЫЕ ПОЛИМЕРЫ, МОДИФИЦИРОВАННЫЕ СУЛЬФИДОМ

... 1. Композиция, включающая полимер, полученный из первой композиции, содержащей: ! i) несшитый эластомерный полимер и ! ii) сульфидный модификатор, представленный формулой 1 ! ! где Y представляет собой (С12-С100)аралкил, (С12-С100)арил, (С12-С100)алкил или (С12-С100) простой диалкиловый эфир(алкил-О-алкил), где каждый из них необязательно может быть замещенным (С1-С4)алкилом, (С1-С4)алкокси, (С7-С16)арилом, (С7-С16)аралкилом, нитрилом, амином, NO2, алкокси или тиоалкилом; ! S представляет собой серу; ! А представляет собой водород, -(S)p-R1 или -MR2R3R4; ! Z представляет собой -SH, -S-MR5R6R7, -S-(S)p-R8, -NR9R10, -NR11COR12, -O-CO-R13, -NCO или -COOR14; ! М представляет собой кремний или олово; ! N представляет собой азот; ! О представляет собой кислород; ! m представляет собой число один, два или три; !р представляет собой число один, два, три, четыре или пять; ! R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13 и R14 являются идентичными или различными, и каждый из них независимо ...

Crosslinkable polymers

Silane-modified polymers are disclosed together with their use in adhesive compositions. The polymers are unsaturated, i.e. contain unsaturated carbon-carbon bonds in the polymer backbone or groups pendant therefrom.

POLYMERISABLE COMPOSITIONS

POLMERISIERBARE COMPOSITIONS

COATING PROCESS WITH DOUBLE HARDENING BY PRECIPITATION FOR ARTICLES WITH SCHATTENGEBIETEN.

LIQUID CRYSTAL POLYMERS WITH MESOGENEN SIDE'S GROUPS, MADE OF ETHYL NICHES INSATIATED ONES POLYMERS AND PROCEDURES FOR THEIR PRODUCTION.

Rubber composition having a base of a diene polymer comprising an organosilane derivative which can be used for the manufacture of tire treads

Polymerisable compositions

METHOD FOR PRODUCING HOMO-AND CO-POLYMERS OF 1,3- DIENES CARRYING REACTIVE SILYL GROUPS

A method for producing homo- and co-polymers of 1,3-dienes carrying reactive silyl groups, with 0.4 to 12% by weight of combined silicon, whereby a 1,3-diene homo- or co-polymer having a molecular weight (Mn) of 400 to 8,000 is reacted with a silicon compound of the general formula: < IMG > (I) wherein X is. a hydrolizable residue, and Y and Z may be the same as X independently of each other, or may represent hydrogen, an alkyl group with 1 to 8 carbon atoms, a cycloalkyl group with 5 to 12 carbon atoms, or an optionally substituted phenyl group. The reaction is carried out at a temperature of 150 to 300.degree.C under an inert gas. The products are useful as bonding agents for filled polymers.

COMPATIBILIZED TIRE TREAD COMPOSITIONS

A polyolefin-polybutadiene block-copolymer and a tire tread composition comprising the polyolefin-polybutadiene block-copolymer, the composition comprising, by weight of the composition, within the range from 15 to 60 wt% of a styrenic copolymer, processing oil, filler, a curative agent, and from 4 to 20 wt% of a polyolefin-polybutadiene block-copolymer, wherein the polyolefin-polybutadiene block-copolymer is a block copolymer having the general formula PO XL fPB; where "PO" is a polyolefin block having a weight average molecular weight within the range from 1000 to 150,000 g/mole, the "fPB" is a functionalized polar polybutadiene block having a weight average molecular weight within the range from 500 to 30,000 g/mole, and "XL" is a cross-linking moiety that covalently links the PO and fPB blocks; and wherein the maximum Energy Loss (Tangent Delta) of the immiscible polyolefin domain is a temperature within the range from -30°C to 10°C.

BUTYL RUBBER WITH INCREASED IMPERMEABILITY

Surface modification methods based on a combination of plasma and chemical treatments render an unfilled butyl rubber surface highly reactive toward organosilanes, allowing formation of an organosilane self-assembled monolayer (SAM). Plasma oxidation of the butyl rubber surface followed by vapour deposition of SiCl4 produces a hydrophilic surface suitable for anchoring organosilanes. Fabrication of SAMs on this hydrophilic butyl rubber surface with n-octadecyltrichlorosilane (OTS) and trichloro(1H,1H,2H,2H-perfluorooctyl)silane (FOTS) via vapour deposition resulted in a 15% and 25% decrease in gas permeability, respectively, with no change in optical transparency of the butyl rubber.

POLYMERISABLE COMPOSITIONS

... 2123429 9310159 PCTABS00022 A polymeric dispersant having a low Tg polymer component, e.g. polybutadiene, and a pendant silylated group with hydrolysable groups capable of associating with and dispersing finely divided inorganic fillers. Curable compositions containing the polymeric dispersant can be cured into composite materials having improved resistance to stress induced by thermal cycling.

METHOD OF PRODUCING MODIFIED POLYMERS OF CONJUGATED DIENES, MODIFIED POLYMERS OF CONJUGATED DIENES, COMPOSITION MODIFIED POLYMERS OF CONJUGATED DIENES, COMPOSITION RUBBER AND AUTOMOBILE TIRE

INITIATORS FOR COPOLYMERIZATION OF DIENE MONOMERS AND VINYL AROMATIC MONOMERS

МОНОМОДАЛЬНЫЙ СВЯЗАННЫЙ ДИЕНОВЫЙ ЭЛАСТОМЕР, СОДЕРЖАЩИЙ СИЛАНОЛЬНУЮ ГРУППУ В СЕРЕДИНЕ ЦЕПИ, СПОСОБ ЕГО ПОЛУЧЕНИЯ И СОДЕРЖАЩАЯ ЕГО КАУЧУКОВАЯ КОМПОЗИЦИЯ

Изобретение относится к мономодальному связанному диеновому эластомеру, содержащему силанольную группу в середине цепи, к способу его получения, а также к каучуковой композиции, приемлемой, в частности, для изготовления оболочек пневматических шин, обладающей в вулканизованном состоянии улучшенными гистерезисными и физическими характеристиками, допускающей также улучшенную переработку в сыром виде и содержащей мономодальный диеновый полимер, содержащий силанольную группу в середине цепи, и активный неорганический наполнитель. Способ получения такого эластомера, функционализированного силанольной группой в середине цепи, включает в себя взаимодействие одного или нескольких диеновых мономеров с инициатором полимеризации в присутствии хелатообразующего полярного агента с последующим взаимодействием активного диенового полимера со связывающим агентом и затем после гидролиза выделение связанного диенового полимера, функционализированного в середине цепи. Каучуковая композиция по настоящему изобретению ...

ELASTOMER MIXTURE, CONTAINING MAINLY DIENE ELASTOMER, MODIFIED AMINOALKOKSISILANOVOI GROUP, RUBBER COMPOSITION, CONTAINING SIMILAR MIXTURE, AND METHODS FOR THE PRODUCTION THEREOF

МОНОМОДАЛЬНЫЙ СВЯЗАННЫЙ ДИЕНОВЫЙ ЭЛАСТОМЕР, СОДЕРЖАЩИЙ СИЛАНОЛЬНУЮ ГРУППУ В СЕРЕДИНЕ ЦЕПИ, СПОСОБ ЕГО ПОЛУЧЕНИЯ И СОДЕРЖАЩАЯ ЕГО КАУЧУКОВАЯ КОМПОЗИЦИЯ

Изобретение относится к мономодальному связанному диеновому эластомеру, содержащему силанольную группу в середине цепи, к способу его получения, а также к каучуковой композиции, приемлемой, в частности, для изготовления оболочек пневматических шин, обладающей в вулканизованном состоянии улучшенными гистерезисными и физическими характеристиками, допускающей также улучшенную переработку в сыром виде и содержащей мономодальный диеновый полимер, содержащий силанольную группу в середине цепи, и активный неорганический наполнитель. Способ получения такого эластомера, функционализированного силанольной группой в середине цепи, включает в себя взаимодействие одного или нескольких диеновых мономеров с инициатором полимеризации в присутствии хелатообразующего полярного агента с последующим взаимодействием активного диенового полимера со связывающим агентом и затем после гидролиза выделение связанного диенового полимера, функционализированного в середине цепи. Каучуковая композиция по настоящему изобретению ...

Modified conjugated diene polymer rubber and rubber composition containing the same

Rubber crosslinked product

TRANSPARENT POLYMER COMPOSITION FOR CONTACT LENSES HARDTOP, OXYGEN PERMEABLE

COMPOSITION CONTAINING A SILICEOUS LOAD

COMPOSES ORGANIQUES DU SILICIUM

L'invention concerne des composés organiques du silicium. On utilise des dérivés de polymères de poids moléculaire limité contenant des substituants di-(alkoxy ou alkoxy substitué)-silyle comme agents de liaison pour améliorer les propriétés des compositions polymères chargées. Ces compositions sont particulièrement applicables aux charges siliceuses (en particulier la silice elle-même) et aux systèmes élastomères vulcanisables par le soufre.

COMPOSITION OF RUBBER INCLUDING/UNDERSTANDING A THERMOPLASTIC POLYMER FUNCTIONALIZES

RUBBER COMPOSITION FOR TIRE TREAD

Sulphur and silyl gp.-contg. polymer - used to improve bonding between silica filler and vulcanisable rubber (NL 31.10.78)

DIENE ELASTOMER MODIFIED IP-REDUCED AND COMPOSITION CONTAINING THE SAME

L'invention concerne un élastomère diénique modifié comprenant : a) au moins 70% en poids, par rapport au poids total de l'élastomère diénique modifié, d'un élastomère diénique linéaire fonctionnalisé majoritairement en milieu de chaîne par un groupe alcoxysilane, éventuellement partiellement ou totalement hydrolysé en silanol, le groupe alcoxysilane étant éventuellement porteur d'une autre fonction susceptible d'interagir avec une charge renforçante, le groupe alcoxysilane étant lié aux deux branches de l'élastomère diénique par l'intermédiaire de l'atome de silicium, ledit élastomère diénique fonctionnalisé présentant un indice de polymolécularité avant fonctionnalisation inférieur ou égal à 1,6, b) plus de 0 et jusqu'à 30% en poids, par rapport au poids total de l'élastomère diénique modifié, d'un élastomère diénique étoilé et présentant un indice de polymolécularité avant étoilage inférieur ou égal à 1,6, la viscosité Mooney dudit élastomère diénique modifié variant de 30 à 80.

SYNTHESIS OF DIENE POLYMER MODIFIED WITH GROUPS DERIVED FROM A POLYCYCLIC AROMATIC HYDROCARBON, PRODUCT RESULTING FROM THIS METHOD AND COMPOSITION CONTAINING THE SAME.

L'invention concerne un procédé de synthèse d'un polymère diéniques modifiés comprenant les étapes de polymérisation anionique d'au moins un monomère diénique en présence d'un initiateur de polymérisation, et de modification du polymère vivant porteur d'au moins un site actif obtenu à l'étape précédente par un composé organosilicié porteur d'au moins un groupement dérivé d'un hydrocarbure aromatique polycyclique, de préférence anthracényle, et d'au moins une fonction réactive vis-à-vis du polymère vivant.

ORGANOALUMINUM PRECURSOR FOR, PROCESS FOR PRODUCING THE SAME AND RUBBER COMPOSITION CONTAINING THE SAME.

ORGANOALUMINUM PRECURSOR FOR, PROCESS FOR PRODUCING THE SAME AND RUBBER COMPOSITION CONTAINING THE SAME.

ORGANOALUMINUM PRECURSOR FOR, PROCESS FOR PRODUCING THE SAME AND RUBBER COMPOSITION CONTAINING THE SAME.

High solids emulsions of curable elastomeric polymers

Elastomer mixture mainly comprising a diene elastomer coupled by an aminoalkoxysilane group, rubber composition including same and methods for obtaining same

... 본 발명은 디엔 탄성중합체 쇄에 3급 또는 2급 아민 관능성 그룹을 갖는 알콕시실란을 도입시키는 커플링제에 의해 디엔 탄성중합체를 개질시켜서 수득한 탄성중합체 혼합물에 관한 것이다. 당해 혼합물은 3급 또는 2급 아민 관능성 그룹을 갖는 알콕시실란 그룹(이 그룹은 규소원자를 통해 디엔 탄성중합체에 결합된다)에 의해 커플링된 디엔 탄성중합체를 주로 포함한다. 본 발명은 또한, 보강성 충전제 및 상기 디엔 탄성중합체를 하나 이상 포함하는 탄성중합체 매트릭스를 포함하는, 특히 타이어 제조에 사용될 수 있는, 보강된 고무 조성물에 관한 것이다. 당해 조성물은 가황된 상태에서 개선된 이력 및 기계적 특성을 갖고, 미경화 상태에서 개선된 가공성을 갖는다.

MODIFIED CONJUGATED DIEN-BASED COPOLYMER, METHOD OF PREPARING SAME, AND RUBBER COMPOSITION INCLUDING SAME

A tire or a tire tread including a modified conjugated dien-based copolymer of Claim 10. The present invention relates to a modified conjugated dien-based copolymer represented by Chemical formula 2 and a method of preparing the same. In Chemical formula 2, R1, R2, R3, R4, P, a, b, n, and 3-n are as described above. COPYRIGHT KIPO 2016 ...

CONJUGATED DIOLEFIN (CO)POLYMER RUBBER, PROCESS FOR PRODUCING (CO)POLYMER RUBBER, RUBBER COMPOSITION, COMPOSITE, AND TIRE

A conjugated diolefin (co)polymer rubber formed from either a conjugated diolefin or a conjugated diolefin and an aromatic vinyl compound and having a primary amino group and alkoxysilyl group bonded to the (co)polymer chain. It has satisfactory processability and can give an automotive tire tread having a balance among wearing resistance, failure characteristics, low hysteresis loss, and wet skid characteristics. © KIPO & WIPO 2007 ...

POLYMERS NANOESTRUTURADOS To the BASE OF CONJUGATED DIENOS, PROCESS OF MANUFACTURE AND USE

método de produção de borracha de dieno conjugado modificado, borracha de dieno conjugado modificado e composição de borracha

polímero de dieno conjugado modificado, composição de borracha e pneu

COLD FLOW REDUCED POLYMERS WITH GOOD PROCESSING BEHAVIOUR

The present invention relates to cold flow reduced polymers with good processing behaviour, these having on the polymer chain end a silane-containing carboxy group of the formula (I), where R1, R2 are identical or different and are an H, alkyl, alkoxy, cycloalkyl, cycloalkoxy, aryl, aryloxy, alkaryl, alkaryloxy, aralkyl or aralkoxy radicals which can contain one or more heteroatoms, preferably O, N, S or Si, R3, R4 are identical or different and are an H, alkyl, cycloalkyl, aryl, alkaryl or aralkyl radicals which can contain one or more heteroatoms, preferably O, N, S or Si, A is a divalent organic radical which, besides C and H, can contain one or more heteroatoms, preferably O, N, S or Si.

RUBBER COMPOSITION INCLUDING A FUNCTIONALIZED THERMOPLASTIC POLYMER

The present invention relates to a diene rubber composition which is reinforced with an inorganic filler and which includes a thermoplastic polymer having, at at least one end, a silanol or silylether functional group. The presence of the functional thermoplastic polymer enables an improvement in the trade-off between the road handling and grip of a tire, the tread of which is made of such a composition.

PHOTOCURABLE ORGANIC POLYMER COMPOSITION

A photocurable organic polymer composition can be quickly cured into a moisture-penetration-resistant solid body by irradiation with ultraviolet rays, electron beams, or the like, and imparts adhesiveness to a cured body after aging. The photocurable organic polymer composition includes: (D) a photoinitiator and either (I) a composition or (II) a reaction product; where (I) the composition includes (A) a liquid organic polymer having at least one hydroxy group per molecule; (B) a radiation curable alkoxysilane; and (C) a condensation-reaction catalyst; and (II) the reaction product comprises (F) a reaction product of components (A), (B), and (C).

POLYMERISABLE COMPOSITIONS

A polymeric dispersant having a low Tg polymer component, e.g. polybutadiene, and a pendant silylated group with hydrolysable groups capable of associating with and dispersing finely divided inorganic fillers. Curable compositions containing the polymeric dispersant can be cured into composite materials having improved resistance to stress induced by thermal cycling.

POLYOMERISABLE COMPOSITIONS

Highly filled, curable compositions containing a curable liquid, e.g. methyl methacrylate; 20 to 80 % by weight of a finely divided inorganic filler of defined particle size, e.g. silica; a functionalised polymer containing a low Tg component which is soluble in the curable liquid, e.g. a functionalised vinyl aromatic/conjugated diene block copolymer; and other components which disperse the filler in the curable liquid and couple the filler to the matrix can be used to produce cured composites which show improved resistance to stress induced by thermal cycling.

Organosilicon-modified polydienes, process for their synthesis and their use as emulsion breakers for crude oil

Organosilicon-modified polydienes having the formula: см. иллюстрацию в PDF-документе in which Z represents a chain terminating group, R1 is a hydrogen or methyl radical, R2, R3, and R4 are lower alkyl radicals with 1 to 4 carbon atoms, which can be the same or different within the polymeric molecule, R5 is a methyl radical or the O--(R8 O--)s --R4 group; R6, R7, R8 are alkylene radicals with 2 to 4 carbon atoms, C:O ratio of R6 O is 2.25 to 3:1, R7 O is 2 to 2.75:1, R8 O is 2 to 3:1 however, the difference between the C:O ratio of R6 O and R7 O must be at least 0.25, and the C:O ratio of R8 O must be less than that of R7 O or greater than that of R6 O, a is 0 to 2, 0 Подробнее

MODIFER, MODIFIED AND CONJUGATED DIENE-BASED POLYMER AND RUBBER COMPOSITION INCLUDING THE SAME

The present invention provides a modifier, a modified and conjugated diene-based polymer which is modified using the same, and a rubber composition including the modified and conjugated diene-based polymer, and more particularly, a modifier which includes a compound represented by Formula 1 and is capable of improving the mixing properties between a conjugated diene-based polymer and a filler, a modified and conjugated diene-based polymer which is modified using the same, and a rubber composition including the modified and conjugated diene-based polymer.

Ring-opening polymer of cyclopentene and method of production of same

There is provided a ring-opening polymer of cyclopentene wherein a cis ratio of cyclopentene-derived structural units is 30% or more, the weight average molecular weight (Mw) is 100,000 to 1,000,000, and an oxysilyl group is included at an end of the polymer chain. For example, the ring-opening polymer of cyclopentene can be obtained by ring opening polymerization of cyclopentene in the presence of a compound of a transition metal belonging to Group 6 in the Periodic Table, an organoaluminum compound represented by the following general formula (1), and an olefinically unsaturated hydrocarbon containing an oxysilyl group. (R1)3-xAl(OR2)x(1) (in the general formula (1), R1 and R2 represent a hydrocarbon group having 1 to 20 carbon atoms and x satisfies the requirement 0 Подробнее

PNEUMATIC TIRE

A pneumatic tire having excellent high-temperature grip performance and abrasion resistance is provided. The pneumatic tire is a tire having a tread composed of a predetermined rubber composition comprising a diene rubber comprising isoprene rubber, carbon black, silica, a compound comprising a predetermined bonding unit I and a bonding unit II, and a compound represented by a predetermined formula.

AROMATIC VINYL-DIENE COPOLYMER, METHOD FOR PRODUCING AROMATIC VINYL-DIENE COPOLYMER, AND RUBBER COMPOSITION

The present invention is to provide an aromatic vinyl-diene copolymer which exhibits excellent mechanical properties and wear resistance when being formed into a tire, a method for producing the aromatic vinyl-diene copolymer, and a rubber composition containing the aromatic vinyl-diene copolymer. The aromatic vinyl-diene copolymer of an embodiment of the present invention is an aromatic vinyl-diene copolymer which is a copolymer of an aromatic vinyl and a diene, wherein the content of a repeating unit derived from an aromatic vinyl is 18 mass % or greater, among repeating units derived from a diene, a proportion of a vinyl structure is 8 mol % or less, a proportion of a 1,4-trans structure is 75 mol % or less, and a proportion of a 1,4-cis structure is from 17 to 90 mol %, and a glass transition temperature is −60° C. or lower.

IN-CHAIN PHOSPHINE- AND PHOSPHONIUM- CONTAINING DIENE-POLYMERS

In-chain phosphine- and/or phosphonium-containing diene-polymers, the preparation and use thereof, as well as vulcanizable rubber compounds comprising such polymers, and their use for the production of moldings in particular in the production of tires. 2. The polymer according to claim 1 , further comprising repeating monomeric units of a vinylaromatic compound.3. The polymer according to claim 1 , wherein the diene is butadiene or isoprene claim 1 , preferably butadiene.4. The polymer according to claim 1 , wherein at least one X comprises the polymerized form of styryl and butadiene.5. The polymer according to claim 1 , wherein the polymer has a number-average molecular weight claim 1 , M claim 1 , from 10 000 to 2 000 000 g/mol.6. The polymer according to claim 1 , wherein the polymer has a glass transition temperature of from −110° C. to +20° C.8. A vulcanizable rubber composition claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a polymer according to , a rubber, optionally a filler,'}optionally a coupling agent, andat least one crosslinking system comprising at least one crosslinker and optionally one or more crosslinking accelerators.9. The vulcanizable rubber composition according to claim 8 ,wherein said filler is a silica based filler, andsaid coupling agent is a sulphur-containing-silane comprising a sulfane moiety and having a molar ratio of sulfur to silicium of less than 1.35:1.10. The vulcanizable rubber composition according to claim 9 , wherein the coupling agent is selected from the group consisting of bis[3-(triethoxysilyl)propyl]monosulfane claim 9 , bis[3(triethoxysilyl)propyl]disulfane claim 9 , bis[3-(triethoxysilyl)propyl]trisulfane claim 9 , bis[3(triethoxysilyl)propyl]tetrasulfane) claim 9 , and mixtures thereof.11. A process for producing vulcanizates claim 8 , comprising: vulcanizing the vulcanizable rubber composition according to .12. The process according to claim 11 , wherein said vulcanizing step is performed at ...

MODIFIED CONJUGATED DIENE POLYMER, MODIFIED RUBBER COMPOSITION COMPRISING SAME, AND METHOD FOR PRODUCING MODIFIED CONJUGATED DIENE POLYMER

Disclosed are a method of preparing a modified conjugated diene-based polymer, a modified conjugated diene-based polymer prepared thereby, and a rubber composition and a tire, including the modified conjugated diene-based polymer. The method of preparing the modified conjugated diene-based polymer includes (a) polymerizing a vinyl aromatic monomer and a conjugated diene monomer using an organo-alkali metal compound in the presence of a hydrocarbon solvent, thus forming an active polymer having an alkali metal end; and (b) coupling or linking the active polymer having the alkali metal end with a compound represented by Chemical Formula 1 or 2.

Process for production of modified conjugated diene rubber, modified conjugated diene rubber, and rubber composition

The method of producing modified conjugated diene rubber, comprising: a process step (a) wherein a conjugated diene polymer with an alkali metal or alkaline-earth metal active terminal, which polymer is obtained from polymerization of a conjugated diene compound or polymerization of a conjugated diene compound with an aromatic vinyl compound, is allowed to react with a hydrocarbyloxysilane compound having in its molecule at least one or more of each of the following functional groups (I): a hydrocarbyloxysilyl group and (II): a nitrogen-containing group formed by substituting one protective group for one hydrogen atom of a secondary amine, a tertiary amino group, an imino group, a pyridyl group to obtain a modified conjugated diene polymer with the functional group (II), and a process step (b) wherein the modified conjugated diene polymer produced in the process step (a) is mixed with an onium-forming agent.

Masterbatch preparation of silica rich rubber composition, rubber composition and tire with component

The invention relates to masterbatch preparation of a silica rich rubber composition, rubber compositions thereof and tire with component.

Rubber composition for tire tread and tire manufactured by using the same

Disclosed are a rubber composition for tire tread and a tire manufactured using the same, in which the rubber composition for tire tread comprises a raw material rubber, which comprises a first solution-polymerized styrene-butadiene rubber with a low glass transition temperature (Tg) and a second solution-polymerized styrene-butadiene rubber with a high glass transition temperature (Tg), a reinforcing filler, a silane coupling agent, a functionalized liquid polymer, and a first resin with a high glass transition temperature and a second resin with a low glass transition temperature.The rubber composition for tire tread maximizes the dispersion of silica and the interaction with rubber, and thus, the rubber composition is excellent in all of the properties with respect to wear resistance, low fuel economy, and braking performance.

Low hysteresis sealant composition for self-sealing tire

This invention is based upon the unexpected finding that the reaction product of polyisobutylene and a silane can be incorporated into tire sealant formulations to greatly reduce the level of hysteresis exhibited by such sealant formulations which decreases the rolling resistance of the tire to improve fuel economy. This is made possible by the further unexpected fining that silanes will react with polyisobutylene by a reaction which is initiated with a peroxide. This invention more specifically discloses a sealant composition which is particularly useful in manufacturing self-sealing tires and which is comprised of (a) the reaction product of polyisobutylene and a silane; and (b) a reinforcing filler. The sealant compositions also contain a peroxide to facilitate partial degradation of the polyisobutylene rubber during the curing of the tire.

TYRE AND RUBBER COMPOSITION CONTAINING A GRAFTED POLYMER

Rubber composition and pneumatic tire

The present invention is directed to a rubber composition comprising, based on 100 parts by weight of elastomer (phr), (A) from 60 to 90 phr of a solution polymerized styrene-butadiene rubber functionalized with an alkoxysilane group and at least one functional group selected from the group consisting of primary amines and thiols; (B) from 40 to 10 phr of polybutadiene having a microstructure comprising 96 to 99 percent cis 1,4-isomeric units, 0.1 to 1 percent trans 1,4-isomeric units and from 1 to 3 percent vinyl 1,2-isomeric units; a number average molecular weight (Mn) in a range of from 75,000 to 150,000 and a heterogeneity index (Mw/Mn) in a range of from 3/1 to 5/1; and (C) from 50 to 150 phr of silica. The invention is also directed to a tire with such a rubber composition.

Polymeric Photoinitiators

CONJUGATED-DIENE-BASED POLYMER, BRANCHING AGENT, METHOD FOR PRODUCING CONJUGATED-DIENE-BASED POLYMER, OIL-EXTENDED CONJUGATED-DIENE-BASED POLYMER, RUBBER COMPOSITION, AND TIRE

A conjugated diene-based polymer of the present invention has a branch number (Bn) measured by viscosity detector-equipped GPC-light scattering measurement of 8 or more, has a change (ΔT) of an oxidation onset temperature caused through application of a thermal load of 11.9°C or less, and contains an aromatic vinyl compound monomer unit.

РЕЗИНОВАЯ СМЕСЬ И ПНЕВМАТИЧЕСКАЯ ШИНА

Изобретение относится к резиновым смесям и пневматическим шинам, полученным из них. Резиновая смесь включает на 100 масс.% каучукового компонента по меньшей мере 35 масс.% бутадиен-стирольного каучука, сопряженный диеновый полимер и диоксид кремния с удельной поверхностью, измеренной из адсорбции азота от 40-400 м/г. Сопряженный диеновый полимер получен полимеризацией мономерного компонента, включающего сопряженное диеновое соединение, и кремнийсодержащего винилового соединения, в присутствии инициатора полимеризации формулы (I):с получением сополимера. Затем взаимодействует с соединением, содержащим по меньшей мере один атом из атома азота и/или атома кремния, с активной концевой группой сополимера. Резиновая смесь содержит: сопряженный диеновый полимер от 1 до 90 масс.%; каучук на основе полиизопрена от 0 до 40 масс.% на 100 масс.% каучукового компонента; диоксид кремния от 10 до 150 масс.ч. на 100 масс.ч. каучукового компонента. Изобретение позволяет получать резиновую смесь, позволяющую ...

ФУНКЦИОНАЛЬНЫЙ ПОЛИДИЕН, СПОСОБ ЕГО ПОЛУЧЕНИЯ И КАУЧУКОВАЯ КОМПОЗИЦИЯ, СОДЕРЖАЩАЯ ЕГО

Изобретение относится к функциональным полидиенам, способам их получения и композициям на их основе. Предложен функциональный полидиен, который содержит по меньшей мере один тип сопряженных диеновых структурных единиц и силановые связывающие функциональные единицы в своей молекулярной цепи, представленные формулой (I), средняя молекулярная масса функционального полидиена составляет 50000~1000000; R-Rпредставляет собой С-Слинейный или разветвленный алкил или линейный или разветвленный алкоксил, и Rпредставляет собой С-Слинейный или разветвленный алкилен. Предложены также способ получения функционального полидиена и каучуковая композиция, содержащая функциональный полидиен. Технический результат - улучшено соотношение между сопротивлением к мокрому скольжению и сопротивлением качению функционального полидиена; уменьшен неприятный запах, образующийся в процессе смешивания каучука из-за добавления силанового связывающего агента. 3 н. и 12 з.п. ф-лы, 1 ил., 2 табл.

МОДИФИКАТОР, СПОСОБ ПОЛУЧЕНИЯ МОДИФИЦИРОВАННОГО ПОЛИМЕРА СОПРЯЖЕННОГО ДИЕНА ПРИ ИСПОЛЬЗОВАНИИ МОДИФИКАТОРА И МОДИФИЦИРОВАННЫЙ ПОЛИМЕР СОПРЯЖЕННОГО ДИЕНА

Изобретение относится к модификатору, способу получения модифицированного полимера и модифицированному полимеру сопряженного диена. Модификатор для полимера сопряженного диена получают в результате проведения для кремнийсодержащего соединения, имеющего защищенную первичную аминогруппу и две гидролизуемые группы, полной конденсации. Способ получения модифицированного полимера на основе сопряженного диена включает стадию модифицирования, стадию снятия защиты. Стадию защиты проводят после завершения модифицирования, и используемый полимер на основе сопряженного диена предпочтительно является таким, чтобы 10% его полимерных цепей обладали бы живыми или псевдоживыми свойствами. Модифицированный полимер на основе сопряженного диена характеризуется превосходными способностью к малому тепловыделению и сопротивлением истиранию, что используется в каучуковой композиции для пневматической покрышки.5 н. и 8 з.п. ф-лы, 4 табл., 23 пр.

ПОЛИМЕРЫ, ФУНКЦИОНАЛИЗОВАННЫЕ НИТРИЛЬНЫМИ СОЕДИНЕНИЯМИ, ИМЕЮЩИМИ ЗАЩИЩЕННУЮ АМИНОГРУППУ

Изобретение относится к функционализованным полимерам и способу их получения. Способ получения функционализованного полимера включает стадии: полимеризации сопряженного диенового мономера и, необязательно, мономера, способного сополимеризоваться с ним, с использованием анионного инициатора для получения реакционно-способного полимера и проведения реакции между реакционно-способным полимером и нитрильным соединением, имеющим защищенную аминогруппу. Защищенная аминогруппа непосредственно присоединена к фрагменту, выбираемому из группы, состоящей из ациклических фрагментов, гетероциклических фрагментов и неароматических циклических фрагментов. Изобретение позволяет понизить гистерезис вулканизатов. 4 н. и 8 з.п. ф-лы, 1 ил., 3 табл., 25 пр.

ШИНА И РЕЗИНОВАЯ КОМПОЗИЦИЯ, СОДЕРЖАЩИЕ ПРИВИТЫЙ ПОЛИМЕР

Изобретение относится к шине, содержащей резиновую композицию на основе диенового эластомера, армирующего наполнителя, химического сшивающего агента и от 0,1 до 2,0% мол. модификатора, выбираемого из соединений формулы (I): где R обозначает звено, имеющее, по меньшей мере, одну реакционно-способную группу, R1 обозначает водород, R2 обозначает алкиленовый радикал, содержащий от 2 до 8 атомов углерода и необязательно один или несколько гетероатомов, выбираемых из S, N, O или Si, A обозначает атом кислорода или серы или группу =NH, предпочтительно атом кислорода. Изобретение позволяет повысить модули MSA, улучшить относительное удлинение и прочность при разрыве при значительном уменьшении гистерезиса композиции. 3 н. и 5 з.п. ф-лы, 2 табл.

РЕЗИНОВАЯ СМЕСЬ И ПНЕВМАТИЧЕСКАЯ ШИНА

Изобретение относится к резиновой смеси и к шине. Изобретение обеспечивает улучшенный баланс экономии топлива, сцепления шины с мокрым дорожным покрытием и сопротивления истиранию. Резиновая смесь включает каучуковый компонент и оксид кремния. Каучуковый компонент содержит не менее 5 мас.% сопряженного диенового полимера в пересчете на 100 мас.% каучукового компонента. Сопряженный диеновый полимер содержит структурную единицу, полученную из сопряженного диена, следующей формулы (I):и по меньшей мере одна терминальная группа сопряженного диенового полимера модифицирована соединениями формул (IIс) или (IIIa). Содержание оксида кремния составляет от 5 до 150 мас.ч. на 100 мас.ч. каучукового компонентаИзобретение обеспечивает улучшенный баланс экономии топлива, сцепления шины с мокрым дорожным покрытием и сопротивления истиранию. 2 н. и 6 з.п. ф-лы, 4 табл., 8 пр.

СПОСОБ ПОЛУЧЕНИЯ МОДИФИЦИРОВАННОГО ДИЕНОВОГО КАУЧУКА, ПОЛУЧАЕМОГО ПОЛИМЕРИЗАЦИЕЙ В РАСТВОРЕ, ПОДЛЕЖАЩЕГО СМЕШИВАНИЮ С ДИОКСИДОМ КРЕМНИЯ, И КАУЧУКОВОЙ КОМПОЗИЦИИ, СОДЕРЖАЩЕЙ ЕГО

Изобретение относится к способу получения терминального модифицированного диена. Описан способ получения модифицированного диенового каучука, получаемого полимеризацией в растворе. Проводят инициацию полимеризации конъюгированного диенового соединения и ароматического винильного соединения в углеводороде посредством литийорганического соединения. После завершения полимеризации добавляют соединение олова для обработки диенового каучука, так что содержание трех- или более разветвленного компонента составляет 5-30%. Затем добавляют силановое соединение, причем содержание двух- или более разветвленного компонента с силановым соединением диенового каучука составляет 30% или менее. Затем проводят коагуляцию полученного алкоксисилан-модифицированного диенового каучука паром и высушивают. Также описана каучуковая композиция. Модифицированный диеновый каучук имеет превосходную эластичность с хорошей стабильностью при хранении и высокой реакционной способностью с диоксидом кремния. 3 н. и 6 з.п.

НАНОСТРУКТУРИРОВАННЫЕ ПОЛИМЕРЫ НА ОСНОВЕ СОПРЯЖЕННЫХ ДИЕНОВ

Изобретение относится к наноструктурированным полимерам, их получению и применению. Наноструктурированные полимеры на основе сопряженных диенов получают в присутствии катализаторов на основе соединений редкоземельных металлов с последующим взаимодействием с наносочленяющим агентом. Полученные полимеры обладают бимодальным молекулярно-массовым распределением При этом высокомолекулярный компонент имеет среднюю молекулярную массу более 2000000 г/моль и количество от 1 до 20 мас.% в пересчете на полимер. Содержание геля в полимере составляет менее 1%, и содержание 1,2-виниловых звеньев в пересчете на полимер составляет от 0,3 до 1 мас.%. Полимеры по изобретению обладают хорошими технологическими свойствами, резиновые смеси на их основе имеют улучшенный комплекс свойств и улучшенное сопротивление раздиру. 3 н. и 2 з.п. ф-лы, 3 ил., 3 табл., 10 пр.

МОДИФИЦИРОВАННЫЙ ПОЛИМЕР НА ОСНОВЕ СОПРЯЖЕННОГО ДИЕНА И КАУЧУКОВАЯ КОМПОЗИЦИЯ, ВКЛЮЧАЮЩАЯ ПОЛИМЕР

Настоящее изобретение относится к модифицированному полимеру на основе сопряженного диена и к каучуковой композиции. Модифицированный полимер содержит повторяющееся звено, полученное из мономера сопряженного диена, и функциональную группу, полученную из модификатора, а также от 30 до 45 мас.% повторяющегося звена, полученного из ароматического винильного мономера. Модификатор представляет собой модификатор, обладающий сродством к диоксиду кремния. Модифицированный полимер на основе сопряженного диена имеет унимодальную форму кривой молекулярно-массового распределения в гельпроникающей хроматографии, молекулярно-массовое распределение от 1,0 до меньше чем 1,7 и содержание кремния от 100 до 10000 ч/млн из расчета на массу. Каучуковая композиция содержит модифицированный полимер на основе сопряженного диена и наполнитель. Полученный модифицированный полимер имеет прекрасную перерабатываемость, хорошие физические свойства, такие как механические свойства при растяжении и прекрасную вязкоэластичность ...

МОДИФИЦИРОВАННЫЙ ПОЛИМЕР НА ОСНОВЕ СОПРЯЖЕННОГО ДИЕНА И СОДЕРЖАЩАЯ ЕГО КАУЧУКОВАЯ КОМПОЗИЦИЯ

Настоящее изобретение относится к модифицированному полимеру на основе сопряженного диена, а также к композиции для элемента шины или резиновых изделий, содержащей модифицированный полимер на основе сопряженного диена. Модифицированный полимер на основе сопряженного диена имеет унимодальную форму кривой молекулярно-массового распределения по гельпроникающей хроматографии и молекулярно-массовое распределение от 1,0 до меньше чем 1,7. Указанный полимер содержит функциональную группу, полученную из инициатора модификации на одном окончании, и функциональную группу, полученную из модификатора. Инициатор модификации представляет собой продукт реакции соединения и металлоорганического соединения. Модификатор представляет собой соединение формул или . Полученный непрерывной полимеризацией модифицированный полимер на основе сопряженного диена имеет замечательную перерабатываемость и прекрасные физические свойства, такие как механические свойства при растяжении и вязкоупругие свойства. 2 н. и 10 ...

МОДИФИЦИРОВАННЫЕ ЭЛАСТОМЕРНЫЕ ПОЛИМЕРЫ

Изобретение относится к модифицированным эластомерным полимерам. Модифицированный эластомерный полимер получен, по меньшей мере, из следующих компонентов: i) живущего анионного эластомерного полимера; ii) модифицированного сочетающего агента, представленного формулой 1:(RO)Si-R-S-SiR ; iii) модифицирующего концы полимерной цепи агента, представленного формулой 3:(RO)(R)Si-R-S-SiR Изобретение позволяет снизить гистерезисные потери, что позволяет понизить сопротивление качению в эластомерном изделии и экономить топливо. 10 н. и 9 з.п. ф-лы, 15 табл., 33 пр.

БИССИЛИЛАМИНОСИЛИЛ-ФУНКЦИОНАЛИЗОВАННЫЕ СОПРЯЖЕННЫЕ ДИЕНЫ И ИХ ИСПОЛЬЗОВАНИЕ ПРИ ПРОИЗВОДСТВЕ КАУЧУКОВ

Изобретение относится к биссилиламиносилил-функционализованным сопряженным диенам и их использованию при производстве каучуков. Предложен функционализованный сопряженный диен, выбираемый из группы соединений, описывающихся формулами (Ia), (Ib), (Ic), где R необязателен и при наличии представляет собой линейную или разветвленную, насыщенную или ненасыщенную гидрокарбиленовую группу, R1выбран из одинарной связи, группы SiR7R8и гидрокарбиленовой группы, необязательно содержащей одну или более групп SiR7R8, R2, R3, R4, R5, R7и R8идентичные или различные и представляют собой алкильную группу, содержащую от 1 до 10 атомов углерода. Предложены также композиция указанного диена, применение производного соли щелочного металла и указанного диена в качестве инициатора анионной сополимеризации сопряженных диеновых мономеров и способ сополимеризации с его использованием, а также эластомерный сополимер, способ производства каучука, каучук и каучуковая композиция, содержащая эластомерный сополимер, компонент ...

Functionalized polymers and methods for their manufacture

A method for preparing a functionalized polymer, the method comprising the steps of (i) polymerizing monomer with a coordination catalyst to form a reactive polymer; and (ii) reacting the reactive polymer with a carboxylic or thiocarboxylic ester containing a silylated amino group.

Process for producing modified conjugated diene-based polymer, modified conjugated diene-based polymer, and polymer composition

An object of the present invention is to provide a process for producing a modified conjugated diene-based polymer suitable for preparing a polymer composition excellent in the fuel cost saving effect. The present invention provides a process for producing a modified conjugated diene-based polymer, comprising reacting a conjugated diene-based polymer having a monomer unit based on a conjugated diene compound and a monomer unit based on a compound represented by the following formula (1), with an organometallic compound, and reacting the resulting reaction product with a hydrocarbyloxysilane compound: wherein R 11 , R 12 , R 13 , R 14 and R 15 each represent a hydrogen atom or an alkyl group, at least one of R 11 , R 12 , R 13 , R 14 and R 15 is an alkyl group, R 16 , R 17 and R 18 each represent a hydrogen atom or a hydrocarbyl group, R 19 represents a hydrocarbylene group, and k represents 0 or 1.

Method of producing modified conjugated diene rubber, modified conjugated diene rubber, and rubber composition

There is provided a method of producing a conjugated diene rubber capable of being used as a starting material for a crosslinked rubber that can be used in applications such as tire treads and can raise the fuel efficiency. This method of producing a conjugated diene rubber comprises (a) a step of reacting a first alkoxysilane compound having in a molecule at least one group convertible to onium by an onium generator and at least one alkoxysilyl group that has at least two alkoxy groups, with a conjugated diene polymer having an alkali metal or alkaline-earth metal active terminal and obtained by polymerizing a conjugated diene compound and an aromatic vinyl compound, thereby to obtain a modified conjugated diene polymer that has the group convertible to onium and the alkoxysilyl group, and (b) a step of mixing the resulting modified conjugated diene polymer with the onium generator and a second alkoxysilane compound having in a molecule at least one alkoxysilyl group and at least one group convertible to onium by the onium generator.

Rubber composition including a functionalized thermoplastic polymer

The present invention relates to a diene rubber composition reinforced with an inorganic filler comprising a thermoplastic polymer bearing, at at least one end, a silanol or silyl ether functional group. The presence of the functional thermoplastic polymer makes it possible to improve the compromise of performances, which are the handling and the grip, of a tyre having a tread that is based on such a composition.

MODIFIED NATURAL RUBBER AND METHOD OF MANUFACTURING THE SAME, RUBBER COMPOSITION AND TIRE

The present invention provides a modified natural rubber that offers higher efficiency of graft polymerization or attachment of a polar group-containing compounds, and that possesses excellent low loss factor, wear resistance and fracture resistance when used as a rubber composition, a rubber composition using the modified natural rubber and a tire using the rubber composition. In the present invention, a polar group-containing compound is graft polymerized or attached under mechanical shear force to a natural rubber raw material having a nitrogen content of 0.4 mass % or less. 1. A modified natural rubber formed by graft polymerizing or attaching a polar group-containing compound to at least one natural rubber raw material selected from the group consisting of natural rubber , a natural rubber latex coagulation and a natural rubber cup lump under mechanical shear force ,wherein the natural rubber raw material has a nitrogen content of 0.4 mass % or less.2. The modified natural rubber according to claim 1 , wherein a grafting or attaching amount of the polar group-containing compound is 0.01 to 5.0 parts by mass per 100 parts by mass of the solid rubber component in the natural rubber raw material.3. The modified natural rubber according to claim 1 , wherein the polar group-containing compound has at least one polar group selected from the group consisting of amino group claim 1 , imino group claim 1 , nitrile group claim 1 , ammonium group claim 1 , imido group claim 1 , amido group claim 1 , hydrazo group claim 1 , azo group claim 1 , diazo group claim 1 , hydroxyl group claim 1 , carboxyl group claim 1 , carbonyl group claim 1 , epoxy group claim 1 , oxycarbonyl group claim 1 , nitrogen-containing heterocyclic group claim 1 , oxygen-containing heterocyclic group claim 1 , tin-containing group and alkoxysilyl group.4. The modified natural rubber according to claim 1 , wherein the modified natural rubber is formed through graft polymerization of the polar group- ...

Polymers Functionalized With A Carboxylic Or Thiocarboxylic Ester Containing A Silylated Amino Group

A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer with an anionic initiator to form a reactive polymer; and (ii) reacting the reactive polymer with a carboxylic or thiocarboxylic ester containing a silylated amino group, where the silylated amino group is directly attached to a moiety selected from the group consisting of acyclic moieties, heterocyclic moieties, and nonaromatic cyclic moieties.

MODIFIED CONJUGATED DIENE RUBBER, METHOD FOR PRODUCING SAME, AND RUBBER COMPOSITION

A method containing a step of reacting a conjugated diene polymer having an alkali metal or alkaline earth metal active end with a hydrocarbyloxysilane compound having one or more of each of the following functional groups I and II in its molecule to obtain a modified conjugated diene polymer containing a functional group II, and a step of mixing the modified conjugated diene polymer and a compound such as organic acid. A modified conjugated diene rubber which can be used as a raw material of a cross-linked rubber which can be used in tire treads and the like and can enhance low fuel consumption performance is provided. The functional group I is a hydrocarbyloxysilyl group. The functional group II is a nitrogen-containing group in which both of two hydrogen atoms of a primary amino group are substituted with protective groups. 1. A method for producing a modified conjugated diene rubber , comprising:reacting a conjugated diene polymer having an alkali metal or alkaline-earth metal active end, which is obtained by a process comprising polymerizing a conjugated diene compound with or without an aromatic vinyl compound along with a hydrocarbyloxysilane compound having one or more of each of a functional group (I) and a functional group (II) in its molecule to obtain a modified conjugated diene polymer containing the functional group (II),wherein the functional group (I) is a hydrocarbyloxysilyl group, andthe functional group (II) is a nitrogen-containing group in which both of two hydrogen atoms of a primary amino group are substituted with a protective group, andmixing the modified conjugated diene polymer and one or more selected from the group consisting of an organic acid compound and an organic acid derivative to obtain the modified conjugated diene rubber.2. The method according to claim 1 , wherein the organic acid compound claim 1 , the organic acid derivative claim 1 , or both the organic acid compound and organic acid derivative are a carboxylic acid claim 1 ...

A TIRE COMPRISING A RUBBER COMPOSITION

A tire comprises a rubber composition based on at least an elastomer matrix comprising 20 to 70 phr of a first diene elastomer bearing at least one SiOR function, R being a hydrogen atom or a hydrocarbon radical, the SiOR function not located at the chain ends of the first diene elastomer, 20 to 70 phr of a second diene elastomer which is a polyisoprene, and optionally, 0 to 20 phr of a third diene elastomer; and a reinforcing filler comprising a reinforcing inorganic filler. 117.-. (canceled)18. A tire comprising a rubber composition based on at least:an elastomer matrix comprising 20 to 70 phr of a first diene elastomer bearing at least one SiOR function, R being a hydrogen atom or a hydrocarbon radical, the SiOR function not located at the chain ends of the first diene elastomer, 20 to 70 phr of a second diene elastomer which is a polyisoprene, and optionally, 0 to 20 phr of a third diene elastomer; anda reinforcing filler predominantly comprising a reinforcing inorganic filler.19. The tire according to claim 18 , wherein the first diene elastomer is a styrene-butadiene copolymer.20. The tire according to claim 18 , wherein the first diene elastomer further bears at least one amine function.21. The tire according to claim 20 , wherein the SiOR function bears the amine function.22. The tire according to claim 18 , wherein R of the SiOR function is a hydrocarbon radical.23. The tire according to claim 18 , wherein the first diene elastomer has a glass transition temperature of lower than −40° C.24. The tire according to claim 18 , wherein the elastomer matrix comprises 30 to 60 phr of the first diene elastomer.25. The tire according to claim 18 , wherein the elastomer matrix comprises 30 to 60 phr of the second diene elastomer.26. The tire according to claim 18 , wherein the second diene elastomer comprises more than 50% by weight of natural rubber per 100% by weight of the second diene elastomer.27. The tire according to claim 18 , wherein the elastomer matrix ...

Azasilane-based modifier, and method for preparing modified and conjugated diene-based polymer using the same

The present invention provides an azasilane-based modifier of Formula 1, which may easily introduce a functional group having affinity with a filler into a conjugated diene-based polymer chain, a modified and conjugated diene-based polymer including the functional group derived from the azasilane-based modifier, a method for preparing the modified and conjugated diene-based polymer, a rubber composition including the modified and conjugated diene-based polymer, and a molded article and a tire manufactured from the rubber composition.

TIRE COMPRISING A RUBBER COMPOSITION INCLUDING A SUBSTITUTED DIENE ELASTOMER

A tire comprising a rubber composition comprising a substituted diene elastomer is provided. The substituted diene elastomer comprises units bearing an A-B radical, in which: 2. A tire according to claim 1 , wherein A represents a C-Cradical which can be interrupted by one or more heteroatom(s).3. A tire according to claim 1 , wherein A represents a linear C-Calkylene radical.4. A tire according to claim 1 , wherein B represents a methyl claim 1 , cyclopentyl or cyclohexyl radical.5. A tire according to claim 1 , wherein the A-B radical is bonded to the chain of the elastomer via a sulfur atom or a silicon atom.6. A tire according to claim 5 , wherein the elastomer comprises pendant groups distributed along the chain of following formula (1): *—SiRR-A-B [{'sub': 1', '2', '1', '5', '6', '14', '7', '11, 'Rand R, which are identical or different, each representing a C-Calkyl, C-Caryl or C-Caromatic alkyl group;'}, {'sub': 3', '35, 'A representing an aliphatic C-Cradical which can be interrupted by one or more heteroatom(s);'}, {'sub': 1', '6, 'B representing a linear, branched or cyclic C-Chydrocarbon radical;'}, '* denoting a point of bonding with the elastomer chain., 'with7. A tire according to claim 5 , wherein the substituted diene elastomer is obtained by hydrosilylation of a diene elastomer E claim 5 , by reacting the diene elastomer E with a hydrosilane of formula (2) H—SiRR-A-B claim 5 , where Rand R claim 5 , which are identical or different claim 5 , each represent a C-Calkyl claim 5 , C-Caryl or C-Caromatic alkyl group claim 5 , A represents an aliphatic C-Cradical which can be interrupted by one or more heteroatom(s) claim 5 , B represents a linear claim 5 , branched or cyclic C-Chydrocarbon radical claim 5 , and the reacting step is in the presence of a hydrosilylation catalyst.8. A tire according to claim 5 , wherein the elastomer comprises pendant groups distributed along the chain of following formula (3): *—S-A-B [{'sub': 3', '35, 'A representing an ...

RUBBER COMPOSITION COMPRISING A BLOCKED MERCAPTOSILANE COUPLING AGENT

A rubber composition, devoid of zinc or comprising less than 0.5 phr of zinc and devoid of guanidine derivatives or comprising less than 0.5 phr of guanidine derivatives, based on at least one diene elastomer, one inorganic filler as reinforcing filler and one blocked mercaptosilane corresponding to the formula: 1) A rubber composition , devoid of zinc or comprising less than 0.5 part per hundred parts of elastomer , phr , of zinc and devoid of guanidine derivatives or comprising less than or 0.5 phr of guanidine derivatives , based on at least one diene elastomer , one inorganic filler as reinforcing filler and one blocked mercaptosilane corresponding to the general formula (I):{'br': None, 'sup': 2', '1, 'sub': a', '(3-a), '(RO)RSi—Z—S—C(═O)-A'} [{'sup': '1', 'the symbols R, which are identical or different, each represent a monovalent hydrocarbon group chosen from linear or branched alkyls, cycloalkyls or aryls having from 1 to 18 carbon atoms;'}, {'sup': '2', 'the symbols R, which are identical or different, each represent hydrogen or a monovalent hydrocarbon group chosen from linear or branched alkyls, cycloalkyls or aryls having from 1 to 18 carbon atoms;'}, 'the symbol A represents hydrogen or a monovalent hydrocarbon group chosen from linear or branched alkyls, cycloalkyls or aryls having from 1 to 18 carbon atoms and linear or branched alkoxyalkyls having from 2 to 8 carbon atoms;', 'the symbol Z represents a divalent bonding group comprising from 1 to 18 carbon atoms;', 'a is an integer equal to 1, 2 or 3., 'wherein2) The rubber composition according to claim 1 , wherein Z comprises one or more heteroatoms selected from the group consisting of O claim 1 , S and N.3) The rubber composition according to claim 1 , wherein a is equal to 3 and at least one of the Rsymbols represents a monovalent hydrocarbon group chosen from linear or branched alkyls claim 1 , cycloalkyls or aryls having from 1 to 18 carbon atoms.4) The rubber composition according to claim 1 , ...

Modified Conjugated Diene-Based Polymer and Rubber Composition Including the Same

A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. In some embodiments, a modified conjugated diene-based polymer includes a 1,2-vinyl bond content of 30.0 wt % or less with respect to a total weight of the modified conjugated diene-based polymer, wherein the polymer has a glass transition temperature of −90° C. to −50° C., a mooney viscosity of 50 to 100 measured by ASTM D1646, polydispersity index (PDI) of 1.5 to 3.5, and a mooney relaxation ratio of 0.7 or less when measured at 110° C.

Conjugated Diene Polymer, Conjugated Diene Polymer Composition, and Tire

A conjugated diene polymer satisfying following conditions (1) to (4): 1. A conjugated diene polymer satisfying following conditions (1) to (4):(1) the conjugated diene polymer has two or more peaks in a molecular weight distribution curve obtained by measurement with gel permeation chromatography (GPC);(2) the molecular weight distribution curve contains a peak (A) having a peak molecular weight of 500,000 to 2,500,000 and a peak (B) having a peak molecular weight of 150,000 to 600,000;(3) a total value of an area of the peak (A) and an area of the peak (B) is 70% or more of a total area of the molecular weight distribution curve; and(4) an absolute value of difference between a glass transition temperature of a conjugated diene polymer in the peak (A) (Tg (A)) and a glass transition temperature of a conjugated diene polymer in the peak (B) (Tg (B)) is 2° C. to 30° C.2. The conjugated diene polymer according to claim 1 , satisfying following expression (I):{'br': None, 'i': Tg', 'B', 'Tg', 'A, '()>()\u2003\u2003(I).'}3. The conjugated diene polymer according to claim 1 , wherein Tg (A) is −70° C. to −15° C. and Tg (B) is −68° C. to −13° C.4. The conjugated diene polymer according to claim 1 , wherein the conjugated diene polymer in the peak (A) contains 10 to 50% by mass of a vinyl aromatic compound and has a 1 claim 1 ,2-vinyl bond content of 20 to 70%.5. The conjugated diene polymer according to claim 1 , wherein the conjugated diene polymer in the peak (B) contains 10 to 50% by mass of a vinyl aromatic compound and has a 1 claim 1 ,2-vinyl bond content of 25 to 70%.6. The conjugated diene polymer according to claim 1 , wherein the total value of the area of the peak (A) and the area of the peak (B) is 80% or more of the total area of the molecular weight distribution curve.7. The conjugated diene polymer according to claim 1 , wherein the area of the peak (B) is 30% to 70% of the total area of the molecular weight distribution curve.8. The conjugated diene ...

SULFUR-LINKED HYBRID GEL COMPOSITIONS AND AEROGELS THEREOF

Methods and materials are described for preparing organic-inorganic hybrid gel compositions where a sulfur-containing cross-linking agent covalently links the organic and inorganic components. The gel compositions are further dried to provide porous gel compositions and aerogels. The mechanical and thermal properties of the dried gel compositions are also disclosed. 1. A gel composition comprising an organic polymer and a silica network , with at least a cross link comprising sulfur.2. The gel composition of wherein the gel composition is an aerogel composition.3. The gel composition of or claim 1 , wherein the polymer is selected from the group consisting of unsaturated polyesters; prepolymers based on vinylesters claim 1 , acrylates claim 1 , methacrylates or polyurethanes claim 1 , polybutadiene claim 1 , polystyrene claim 1 , or polyisoprene; styrene-butadiene copolymers; butadiene-isoprene co-polymers; buradiene-isoprene-styrene terpolymers; copolymers or terpolymers of isobutylene claim 1 , para-methylstyrene and bromo-para-methyl-styrene; ethylene propylene diene monomer rubber and a combination thereof.4. The gel composition of or claim 1 , wherein the polymer is in the form of latex particles or polymer resin.5. The gel composition of or claim 1 , wherein the cross link is provided by a sulfur-containing cross linking agent.6. The gel composition of claim 5 , wherein the sulfur-containing cross linking agent is a hexasulfide compound claim 5 , a tetrasulfide compound claim 5 , or a disulfide compound.7. The gel composition of claim 5 , wherein the sulfur-containing cross linking agent is selected from the group consisting of polysulfide alkyl silanes claim 5 , mercapto aryl silanes claim 5 , polysulfide aryl silanes claim 5 , silated core polysulfides claim 5 , sulfur-containing silanes claim 5 , sulfanylsilanes claim 5 , sulfur-containing siloxanes claim 5 , sulfur-functional polyorganosiloxanes claim 5 , bis(triethoxysilylpropyl) tetrasulfide claim 5 , 3- ...

Modified conjugated diene-based polymer, preparation method therefor, and rubber composition containing same

Disclosed are a modified conjugated diene-based polymer represented by specific Chemical Formula, a method of preparing the same, and a rubber composition including the same.

Modified conjugated diene-based polymer and rubber composition containing same

The present invention provides a modified conjugated diene polymer in which a phenoxy group of a polar group-containing phenoxy compound is bonded to at least one selected from the group consisting of the end, main chain, and side chain of a conjugated diene polymer, which can further improve a rubber composition in the low-heat-generation property and abrasion resistance, and a rubber composition using the same.

Method of production of modified conjugated diene rubber

A method of production of modified conjugated diene rubber includes causing an aromatic compound having three or more carbon atoms directly bonded to an aromatic ring in one molecule to react with an alkali metal atom so as to obtain an alkali metal-reacted aromatic compound; polymerizing a monomer at least containing a conjugated diene compound by using the alkali metal-reacted aromatic compound so as to obtain a conjugated diene rubber having an active end; causing the active end of the conjugated diene rubber having an active end to react with an activity control agent so as to obtain a conjugated diene rubber reacted with an activity control agent; and causing the active end of the conjugated diene rubber reacted with an activity control agent to react with a modifier having an alkoxy group and a halogen atom-containing group so as to obtain a modified conjugated diene rubber.

Functionalized Polymer Blend for a Tire

A polymer blend consisting of (a) 60-96 percent by weight of a high molecular weight first elastomeric polymer, (b) 4-35 percent by weight of a low molecular weight second polymer, and optionally (c) 0-13 percent by weight of an extender oil, wherein the amounts of the components (a), (b) and (c) are based on the total weight of the polymer blend.

ORGANIC SILICON COMPOUND, AND RUBBER COMPOUNDING AGENT AND RUBBER COMPOSITION IN WHICH SAME IS USED

An organic silicon compound represented by formula (1) makes it possible to significantly lower the hysteresis loss of a cured product when added to a rubber composition and also imparts a rubber composition with which it is possible to realize a desired low-fuel-consumption tire. 3. The organosilicon compound production method of claim 2 , wherein the co-catalyst is an ammonium salt of an inorganic acid claim 2 , an acid amide compound or a carboxylic acid.4. The organosilicon compound production method of claim 3 , wherein the ammonium salt of an inorganic acid is one or more selected from the group consisting of ammonium carbonate and ammonium bicarbonate.5. The organosilicon compound production method of claim 3 , wherein the amide compound is one or more selected from the group consisting of formamide claim 3 , acetamide claim 3 , N-methylacetamide claim 3 , N claim 3 ,N-dimethylacetamide claim 3 , propionamide claim 3 , acrylamide claim 3 , malonamide claim 3 , succinamide claim 3 , maleamide claim 3 , fumaramide claim 3 , benzamide claim 3 , phthalamide claim 3 , palmitamide and stearamide.6. The organosilicon compound production method of claim 3 , wherein the carboxylic acid is acetic acid.7. A rubber compounding ingredient comprising the organosilicon compound of .8. The rubber compounding ingredient of claim 7 , wherein the organosilicon compound has a number-average molecular weight of 25 claim 7 ,000 or less.9. The rubber compounding ingredient of or claim 7 , wherein e claim 7 , f and g satisfy the condition 0.05≤g/(e+f+g)<1.0.10. The rubber compounding ingredient of any one of to claim 7 , wherein f and g satisfy the condition 0.3≤g/(f+g)≤1.0.11. The rubber compounding ingredient of any one of to claim 7 , further comprising a sulfide group-containing organosilicon compound.12. The rubber compounding ingredient of which further comprises at least one type of powder claim 11 , wherein the weight ratio of the combined amount (A) of the organosilicon ...

AMINOSILANE TERMINAL MODIFIER TO WHICH FUNCTIONAL GROUP HAS BEEN INTRODUCED, METHOD FOR PRODUCING TERMINAL-MODIFIED CONJUGATED DIENE POLYMER USING THE AMINOSILANE TERMINAL MODIFIER, AND TERMINAL-MODIFIED CONJUGATED DIENE POLYMER

Disclosed are an end-modified conjugated diene-based polymer configured such that the end of a conjugated diene-based polymer is coupled with an aminosilane-based end modifier, and a method of preparing the same. 3. The end-modified conjugated diene-based polymer of claim 1 , wherein the end-modified conjugated diene-based polymer has a number average molecular weight (Mn) of 1 claim 1 ,000 to 2 claim 1 ,000 claim 1 ,000 g/mol.4. The end-modified conjugated diene-based polymer of claim 1 , wherein the end-modified conjugated diene-based polymer comprises 1 to 60 wt % of an aromatic vinyl monomer based on 100 wt % in total of a conjugated diene monomer and the aromatic vinyl monomer.7. The method of claim 5 , wherein the organometallic compound is used in an amount of 0.01 to 10 mmol based on 100 g in total of the monomer.8. The method of claim 5 , wherein a molar ratio of the organometallic compound and the compound represented by Chemical Formula 1 ranges from 1:0.1 to 1:10.9. The method of claim 5 , wherein the polymerizing in a) is performed with additional use of a polar additive.10. The method of claim 9 , wherein the polar additive is added in an amount of 0.001 to 10 g based on 1 mmol in total of the organometallic compound. This application claims the benefit of Korean Patent Application Nos. KR 10-2014-0186008, filed Dec. 22, 2014, and KR 10-2015-0104520, filed Jul. 23, 2015, which are hereby incorporated by reference in their entirety into this application.The present invention relates to a functionalized aminosilane-based end modifier, a method of preparing an end-modified conjugated diene-based polymer using the same, and an end-modified conjugated diene-based polymer prepared thereby.Recently, in the vehicle industry, the demand for the durability, stability and fuel economy of vehicles is continuously increasing, and much effort is directed to satisfying the demand.In particular, many attempts have been made to enhance the properties of rubber, as a ...

Polymers functionalized with imine compounds containing a protected thiol group

A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with an imine compound containing a protected thiol group

Rubber composition and pneumatic tire

There is disclosed a vulcanizable rubber composition comprising: (A) a functionalized elastomer comprising the reaction product of a living anionic elastomeric polymer and a polymerization terminator of formula I where R 1 , R 2 and R 3 are independently C1 to C8 alkyl or C1 to C8 alkoxy, with the proviso that at least two of R 1 , R 2 and R 3 are C1 to C8 alkoxy; R 4 is C1 to C8 alkyl; Si is silicon; S is sulfur; and Z is R 5 or of formula II where R 5 is alkyl, aryl, alkylaryl or arylalkyl; (B) a polymeric amine comprising a primary amine functionality; and (C) an aromatic carboxylic acid or aromatic acid anhydride.

RESIN COMPOSITE MATERIAL AND METHOD FOR PRODUCING RESIN COMPOSITE MATERIAL

To provide a resin composite material in which aggregation of silane compounds in the resin is suppressed and the linear expansion coefficient is lowered, and a method for producing the resin composite material. A resin composite material containing a resin and a silane compound having a structure of the formula (1), wherein a molecular chain of the resin and a molecular chain of the silane compound form an IPN structure or a semi-IPN structure, and a method for producing a resin composite material including a step of mixing a resin and a silane compound to obtain a resin composition and an IPN structure formation step of allowing a plurality of the silane compounds contained in the resin composition to be condensed with each other. Each of Rs in the formula (1) is independently selected from the group consisting of hydrogen, halogen and an arbitrary organic functional group and at least one thereof is a reactive organic functional group. x represents 1 or 1.5. n represents an integer of 100 or more and 10000 or less. 3. The resin composite material according to claim 1 , wherein each of Rs in the formula (1) is independently selected from the group consisting of hydrogen claim 1 , chlorine claim 1 , a silyl claim 1 , a siloxy claim 1 , an alkoxy claim 1 , a vinyl claim 1 , an aryl claim 1 , an alkyl claim 1 , an alkylamine claim 1 , an ether claim 1 , an ester claim 1 , an amine claim 1 , an amide claim 1 , a thiol claim 1 , a methacryl claim 1 , an acryl claim 1 , an epoxy claim 1 , a ureido claim 1 , a mercapto claim 1 , a sulfide and an isocyanate.4. The resin composite material according to claim 1 , wherein at least one of Rs in the formula (1) is a reactive organic functional group selected from the group consisting of a vinyl claim 1 , an alkylamine claim 1 , an amine claim 1 , a methacryl claim 1 , an acryl claim 1 , an epoxy claim 1 , a ureido claim 1 , a mercapto claim 1 , a sulfide and an isocyanate.5. The resin composite material according to claim 1 , ...

RUBBER COMPOSITION AND TIRE

This disclosure is to provide a rubber composition excellent in low loss property and wear resistance without deteriorating the processability. The rubber composition of this disclosure contains a rubber component having a diene-based polymer, a silica, and a glycerin fatty acid ester composition, wherein: the diene-based polymer has 3 or more modified functional groups capable of interacting with the silica merely within a range of ¼ of an entire chain length from a terminal, and has at least one monomer structural unit of a diene-based polymer among the modified functional groups; and the glycerin fatty acid ester composition has a glycerin fatty acid monoester and a glycerin fatty acid diester of C8 to C28 fatty acids, and a content of the glycerin fatty acid ester composition is 0.5 to 15 parts by mass per 100 parts by mass of the rubber component. 1. A rubber composition for a tire containing a rubber component having a diene-based polymer , a silica , and a glycerin fatty acid ester composition , wherein:the diene-based polymer has 3 or more modified functional groups capable of interacting with the silica merely within a range of ¼ of an entire chain length from a terminal, and has at least one monomer structural unit of a diene-based polymer among the modified functional groups; andthe glycerin fatty acid ester composition has a glycerin fatty acid monoester and a glycerin fatty acid diester of C8 to C28 fatty acids, and a content of the glycerin fatty acid ester composition is 0.5 to 15 parts by mass per 100 parts by mass of the rubber component.2. The rubber composition for a tire according to claim 1 , wherein:a content of the silica is 60 to 250 parts by mass per 100 parts by mass of the rubber component.3. The rubber composition for a tire according to claim 1 , wherein:the diene-based polymer has monomer structural units of the diene-based polymer at all points among the modified functional groups.4. The rubber composition for a tire according to claim ...

RUBBER COMPOSITION, METHOD FOR PRODUCING DIENE-BASED POLYMER, AND TIRE

This disclosure is to provide a rubber composition excellent in low loss property, breaking resistance and wear resistance. In order to achieve the aforementioned purpose, this disclosure is a rubber composition containing a rubber component having a diene-based polymer and a silica, wherein: the diene-based polymer has 3 or more modified functional groups capable of interacting with the silica merely within a range of ¼ of an entire chain length from a terminal, and has at least one monomer structural unit of a diene-based polymer among the modified functional groups; and a content of the silica is 60 to 250 parts by mass per 100 parts by mass of the rubber component. 1. A rubber composition containing a rubber component having a diene-based polymer and a silica , wherein:the diene-based polymer has 3 or more modified functional groups capable of interacting with the silica merely within a range of ¼ of an entire chain length from a terminal, and has at least one monomer structural unit of a diene-based polymer among the modified functional groups; and a content of the silica is 60 to 250 parts by mass per 100 parts by mass of the rubber component.2. The rubber composition according to claim 1 , the diene-based polymer has monomer structural units of the diene-based polymer at all points among the modified functional groups.3. The rubber composition according to claim 1 , wherein:the modified functional group is nitrogen-containing functional group, silicon-containing functional group or oxygen-containing functional group.4. The rubber composition according to claim 1 , wherein:a peak molecular weight of the diene-based polymer is 50,000 to 700,000.5. The rubber composition according to claim 1 , wherein:the diene-based polymer is a polymer or copolymer formed by polymerizing 60 to 100 mass % of a diene-based monomer and 0 to 40 mass % of an aromatic vinyl compound.6. The rubber composition according to claim 5 , wherein:the diene-based monomer is 1,3-butadiene.7. ...

METHOD FOR TESTING THE IN SITU SILANIZATION OF BRIGHT FILLERS

The invention relates to a method of testing silanization, which permits inline control of the in situ silanization of light-colored fillers, especially precipitated silicas. This enables continuous in situ silanization in the production of rubber mixtures comprising silanized light-colored fillers, and representative control of the rubber mixture under production conditions. The process is additionally nondestructive and has a high tolerance for carbon black as an additional constituent of the rubber mixture. 1. A method of in-situ testing of the silanization of light-colored fillers in rubbers , the method comprising:extruding a mixture comprising at least one silanized light-colored filler at least one rubber to form en extrudate,subjecting the extrudate to ultrasound waves within a frequency range from 4 to 10 MHz, andmeasuring the signal intensity of the ultrasound waves after transmission of the ultrasound waves through the extrudate, wherein the measured intensity relates directly to an amount of silanization.2. The method as claimed in claim 1 , further comprising determining the relative attenuation coefficient αof the extrudate in the frequency range of the ultrasound waves claim 1 , wherein the relative attenuation coefficient relates inversely to an amount of silanization.3. The method as claimed in claim 1 , further comprising:determining the coefficient of variation of the logarithm of the ultrasound wave intensity or of the ultrasound wave amplitude ln A, andusing the coefficient of variation to monitor the dispersion of the light-colored filler in the extrudate.4. The method as claimed in claim 2 , further comprising:{'sub': 'rel', 'determining the standard deviation of the relative attenuation coefficient α, and'}using the standard deviation to monitor the dispersion of the light-colored filler in the extrudate.5. The method as claimed in claim 1 , wherein the ultrasound waves are produced by an emitter and detected at a receiver and the distance ...

Coupled Polymer Products, Methods Of Making And Compositions Containing

Disclosed herein is a coupled polymer product comprising polymer with up to four polymer chains bonded to a functionalizing compound of formula II, wherein the polymer chains are comprised of conjugated diene-containing monomers optionally in combination with vinyl aromatic monomers and further include vinyl group-functionalized silane compound of formula I bonded within the polymer chain. Also disclosed are processes for producing the coupled polymer product as well as a rubber composition containing the coupled polymer product and tire components comprising the rubber composition. 120-. (canceled)21. A process for preparing a coupled polymer product comprising:a. polymerizing at least one conjugated diene monomer and optionally at least one vinyl aromatic monomer using an anionic initiator to produce polymer chains with a living end; [{'br': None, 'sub': 2', 'a, 'sup': 1', '2', '3, '(HC═CH)-(A)-Si(R)(R)(R)'}, 'wherein a is an integer of 0 or 1,', {'sub': 6', '20, 'A is divalent and selected from C-Caromatic hydrocarbons optionally substituted with alkylene to which the Si is bonded,'}, {'sup': 1', '2', '3', '4', '5', '1', '2', '3', '4', '5, 'sub': 1', '12, 'claim-text': [{'sup': 4', '5', '4', '5, 'sub': 1', '12', '6', '18, 'wherein each Rand Rare independently selected from aliphatic hydrocarbyl of C-Cor aromatic hydrocarbyl of C-C, with Rand Roptionally bonded together into a ring,'}, {'sup': 1', '2, 'and Rand Rare optionally bonded together into a ring comprising two nitrogen atoms,'}], 'each of R, R, and Rare independently selected from linear or branched C-Chydrocarbyl and —N(R)(R), with at least one of R, Rand Rselected from —N(R)(R),'}], 'b. reacting the living end polymer chains from (a) with a vinyl group-functionalized aminosilane compound having formula Ithereby producing a first intermediary product including polymer chains containing at least one vinyl group-functionalized aminosilane compound bonded to the polymer chain via its vinyl group;c. ...

A Polymer Blend for a Tire

A polymer blend consisting of (a) 60-96 percent by weight of a high molecular weight elastomeric polymer, (b) 4-35 percent by weight of a low molecular weight aromatic hydrocarbon polymer, and optionally (c) 0-13 percent by weight of an extender oil, wherein the amounts of the components (a), (b) and (c) are based on the total weight of the polymer blend. 4. The polymer blend according to claim 1 , wherein{'sub': 1', '6', '6', '12', '7', '10', '2, '(4.a) in formula (I), each of R*** are independently selected from methyl, ethyl, iso-propyl, n-propyl, n-butyl, iso-butyl, or tert-butyl; each of R** are independently selected from C-Calkyl, C-Caryl, or C-Calkylaryl; and A is —(CH)N—, wherein N is an integer selected from 1, 2, 3, 4, 5 or 6; and/or'}{'sup': 3', '5', '5', '1', '2', '4', '2′, 'sub': 1', '16', '1', '4', '1', '4, '(4.b) in formula (2), M* is a silicon atom; Ris divalent and is (C-C) alkyl; X* is —OR*, wherein R* is selected from (C-C) alkyl; R, R, and Rare independently selected from (C-C) alkyl; s2′ and t2′ are each 2 and u2′ is 0; and x2′ is 2 and Y is 1; and/or'}{'sub': I', 'II', '1', '4', 'IV', '1', '4, '(4.c) in formula (3), each of Rand Rare independently C-Calkoxy; Ris selected from C-Calkyl; and E is of formula (3a).'}5. The polymer blend according to claim 1 , wherein the aromatic hydrocarbon polymer (b) is obtainable by polymerization of an aromatic monomer claim 1 , selected from the group claim 1 , consisting of 2-methylstyrene claim 1 , 3-methylstyrene claim 1 , 4-methylstyrene claim 1 , 2 claim 1 ,4-dimethylstyrene claim 1 , 2 claim 1 ,4 claim 1 ,6-trimethylstyrene claim 1 , α-methylstyrene claim 1 , stilbene claim 1 , 2 claim 1 ,4-diisopropylstyrene claim 1 , 4-tert-butylstyrene claim 1 , vinyl benzyl dimethylamine claim 1 , (4-vinylbenzyl)dimethyl aminoethyl ether claim 1 , N claim 1 ,N-dimethylaminoethyl styrene claim 1 , tert-butoxystyrene claim 1 , vinylpyridine claim 1 , divinylbenzene and its derivatives claim 1 , coumarone claim 1 , ...

Modified Conjugated Diene-Based Polymer and Method for Producing the Same, and Modified Conjugated Diene-Based Polymer Composition

The present invention provides a modified conjugated diene-based polymer, wherein the Mooney stress-relaxation rate measured at 110° C. is 0.45 or less, and the modification percentage is 75% by mass or more. 1. A modified conjugated diene-based polymer ,wherein a Mooney stress-relaxation rate measured at 110° C. is 0.45 or less, anda modification percentage is 75% by mass or more.2. The modified conjugated diene-based polymer according to claim 1 , comprising a nitrogen atom claim 1 , wherein a content of the nitrogen atom is 25 ppm by mass or more based on a total amount of the modified conjugated diene-based polymer.3. The modified conjugated diene-based polymer according to claim 1 , comprising a nitrogen atom at one or more terminal claim 1 , anda star-shaped polymer structure having a nitrogen atom-containing alkoxysilane substituent positioned at a center thereof.4. The modified conjugated diene-based polymer according to claim 1 , wherein a shrinkage factor (g′) determined by gel permeation chromatography (GPC)-light scattering measurement with a viscosity detector is 0.86 or less.5. The modified conjugated diene-based polymer according to claim 1 , wherein a ratio of a second number-average molecular weight determined by GPC-light scattering measurement to a first number-average molecular weight determined by measurement with GPC is 1.00 or more.6. The modified conjugated diene-based polymer according to claim 1 , wherein a ratio of a second weight-average molecular weight determined by GPC-light scattering measurement to a first weight-average molecular weight determined by measurement with GPC is 1.00 or more.7. The modified conjugated diene-based polymer according to claim 1 , whereina first number-average molecular weight is 200000 or more and 2000000 or less, anda ratio of a first weight-average molecular weight to the first number-average molecular weight is 1.50 or more and 3.50 or less.9. A method for producing the modified conjugated diene-based ...

Rubber composition and pneumatic tire

The present invention provides a rubber composition which has excellent processability owing to its low rubber viscosity during kneading, despite containing a white filler, and which further has excellent fuel economy and excellent abrasion resistance. Also provided is a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition including: a rubber component, a white filler, and a compound represented by the formula (1) below, wherein X represents —CONH— or —COO—; R 1 represents a C7-C23 alkyl group or a C7-C23 alkenyl group; R 2 represents a C1-C3 alkylene group; and R 3 and R 4 each independently represent a hydrogen atom, a C1-C3 alkyl group, or a C1-C3 hydroxyalkyl group, and at least one of R 3 or R 4 is the hydroxyalkyl group.

Rubber composition, crosslinked body, and tire

Provided is a rubber composition containing: (A) a polymer which has a carbon-carbon unsaturated bond and in which a value α represented by the following equation (i) is 0.70 or more and 0.99 or less when p, q, r, and s are defined as constituent proportions (molar proportions), in the polymer, of a structural unit represented by the following formula (1), a structural unit represented by the following formula (2), a structural unit represented by the following formula (3), and a structural unit represented by the following formula (4), respectively; and (B) a thermoplastic resin, in which the polymer (A) is contained in an amount of 60% to 95% by mass relative to the total amount of the polymer (A) and the resin (B),

Modified Conjugated Diene-Based Polymer and Rubber Composition Including the Same

A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. In some embodiments, a modified conjugated diene-based polymer satisfying the conditions of i) a mooney viscosity from 75 to less than 100, measured in accordance with ASTM D1646 at 110° C., ii) a mooney stress relaxation ratio 0.4 or less, measured at 110° C., iii) a weight average molecular weight (Mw) of 750,000 g/mol or more, and iv) a molecular weight distribution from 1.0 to 2.0, wherein the molecular weight distribution is a ratio of Mw to the number average molecular weight (Mn). 1. A modified conjugated diene-based polymer satisfying the following conditions of i) to iv):i) a mooney viscosity from 75 to less than 100, wherein the mooney viscosity measured in accordance with ASTM D1646 at 110° C.,ii) a mooney stress relaxation ratio of 0.4 or less, wherein the mooney stress relaxation ratio is measured at 110° C.,iii) a weight average molecular weight (Mw) of 750,000 g/mol or more; andiv) a molecular weight distribution (MWD) from 1.0 to 2.0, wherein the MWD is a ratio of Mw to the number average molecular weight (Mn).2. The modified conjugated diene-based polymer of claim 1 , wherein the mooney viscosity is from 85 to less than 100.3. The modified conjugated diene-based polymer of claim 1 , wherein the molecular weight distribution is from 1.5 to 2.0.4. The modified conjugated diene-based polymer of claim 1 , wherein the mooney stress relaxation ratio is 0.35 or less.5. The modified conjugated diene-based polymer of claim 1 , wherein the polymer has a 1 claim 1 ,2-vinyl bond content from 5 wt % to 30 wt %.6. The modified conjugated diene-based polymer of claim 1 , wherein the polymer has a coupling number is 3.2 or more.7. The modified conjugated diene-based polymer of claim 1 , wherein the modified conjugated diene-based polymer comprises silicon (Si) atom and nitrogen (N) claim 1 , and wherein the Si content and the N content are 50 ppm or more ...

MODIFIED CONJUGATED DIENE-BASED POLYMER AND METHOD FOR PREPARING THE SAME

The present invention relates to a modified conjugated diene-based polymer, and more particularly, provides a modified conjugated diene-based polymer including a functional group derived from a modifier including a compound represented by Formula 1, and a method for preparing the same. 3. The modified conjugated diene-based polymer of claim 1 , wherein the modified conjugated diene-based polymer further comprises a repeating unit derived from an aromatic vinyl monomer.4. The modified conjugated diene-based polymer of claim 1 , whereinin Formula 1,{'sup': 1', '2, 'Xand Xare N atoms,'}{'sup': 1', '4, 'Rto Rare each independently a divalent hydrocarbon group of 1 to 10 carbon atoms, and'}{'sup': 5', '6, 'Rand Rare each independently a monovalent hydrocarbon group of 1 to 10 carbon atoms.'}6. The modified conjugated diene-based polymer of claim 1 , wherein the modified conjugated diene-based polymer has a number average molecular weight (Mn) of 10 claim 1 ,000 g/mol to 2 claim 1 ,000 claim 1 ,000 g/mol.7. The modified conjugated diene-based polymer of claim 1 , wherein the modified conjugated diene-based polymer has molecular weight distribution (Mw/Mn) of 1 to 5.9. The method for preparing a modified conjugated diene-based polymer of claim 8 , wherein the organometal compound is used in 0.01 mmol to 10 mmol based on total 100 g of the monomers.10. The method for preparing a modified conjugated diene-based polymer of claim 8 , wherein the organometal compound is one or more selected from the group consisting of methyllithium claim 8 , ethyllithium claim 8 , propyllithium claim 8 , n-butyllithium claim 8 , s-butyllithium claim 8 , t-butyllithium claim 8 , hexyllithium claim 8 , n-decyllithium claim 8 , t-octyllithium claim 8 , phenyllithium claim 8 , 1-naphthyl lithium claim 8 , n-eicosyl lithium claim 8 , 4-butylphenyl lithium claim 8 , 4-tolyl lithium claim 8 , cyclohexyl lithium claim 8 , 3 claim 8 ,5-di-n-heptylcyclohexyl lithium claim 8 , 4-cyclopentyl lithium claim ...

Modified conjugated diene polymer, method for producing modified conjugated diene polymer, polymer composition, crosslinked polymer, and tire

A modified conjugated diene-based polymer is produced by reacting a conjugated diene-based polymer having an alkali metal or an alkali-earth metal at a terminal of the polymer with a compound represented by formula (1). R 1 and R 2 independently represent a hydrocarbyl group having 20 or fewer carbon atoms. R 3 represents a substituted alkyl group having 20 or fewer carbon atoms prepared through substitution of at least one of a hydrogen atom and —CH 2 — of an alkyl group by a group containing only at least one heteroatom selected from the group consisting of nitrogen, phosphorus, oxygen, and sulfur, or a monovalent aromatic group having 20 or fewer carbon atoms and containing at least one element selected from the group consisting of nitrogen, phosphorus, oxygen, and sulfur, with the proviso that R 3 does not have active hydrogen. R 4 represents an alkanediyl group having 20 or fewer carbon atoms. n is 1 or 2

METHOD FOR PRODUCING MODIFIED CONJUGATED DIENE POLYMER, MODIFIED CONJUGATED DIENE POLYMER, POLYMER COMPOSITION, CROSSLINKED BODY AND TIRE

A modified conjugated diene-based polymer is produced by a method reacting a conjugated diene-based polymer having an active terminal, which is a polymer obtained by polymerizing a monomer including a conjugated diene compound in the presence of an alkali metal compound, with a compound [A] represented by formula (1). In formula (1), each of Rand Rrepresents a C1 to C8 hydrocarbyl group and the like; each of Rand Rrepresents a C1 to C8 hydrocarbyl group and the like; each of Rand Rrepresents a C1 to C6 hydrocarbylene group; Rrepresents a C1 to C10 hydrocarbylene group; X represents a C1 to C4 hydrocarbyloxy group; each of Xand Xrepresent a C1 to C4 hydrocarbyl group or hydrocarbyloxy group; m is an integer of 1 to 3. 3. The method of claim 2 , wherein the compound of formula (2) in the alkali metal compound is present in an amount of 50 mol % or more.4. The method of claim 2 , wherein the alkali metal compound comprises claim 2 , as the compound of formula (2) claim 2 , ((2E claim 2 ,6E)-11-(dimethylamino)-3 claim 2 ,7-dimethylundeca-2 claim 2 ,6-dien-1-yl)lithium.5. The method of claim 1 , wherein the monomer further comprises an aromatic vinyl compound.8. A polymer composition claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00006', '#text': 'claim 6'}, '#text': 'the modified conjugated diene-based polymer of ;'}silica; anda crosslinking agent.9. A crosslinked product claim 8 , produced by crosslinking the polymer composition of .10. A tire claim 8 , comprising:a tread; anda sidewall,{'claim-ref': {'@idref': 'CLM-00008', '#text': 'claim 8'}, '#text': 'wherein the tread and/or the sidewall comprises the polymer composition of .'} The present application is based on Japanese Patent Application No. 2019-41440 filed on Mar. 7, 2019, the content of which is incorporated herein by reference.The present disclosure relates to a method for producing a modified conjugated diene-based polymer, and to a modified conjugated diene-based polymer, a polymer composition, a ...

Amino Silane-Modified Polymers

Modified macromolecular compounds obtainable by using specific amino silane polymerization initiator compounds and optionally chain end-modifying compounds are described. Polymer compositions including such modified macromolecular compounds and the use of such compositions in the preparation of vulcanized (crosslinked) elastomeric polymer compositions and articles are described. 4. The modified macromolecular compound according to claim 2 , wherein Ris selected from —OH and (C-C) alkyl; Z is represented by -M(R)(R)(T); Mis a silicon atom or a tin atom; Rand Rare each independently selected from (C-C) alkyl; and T is represented by R claim 2 , wherein Ris selected from (C-C) alkyl.5. The modified macromolecular compound according to claim 1 , wherein Mis a silicon atom.6. The modified macromolecular compound according to claim 1 , wherein Mis a tin atom.7. The modified macromolecular compound according to claim 1 , wherein Y is divalent and is (C-C) alkyl.8. The modified macromolecular compound according to claim 1 , wherein Rand Rare each independently selected from —OH and (C-C) alkyl; Rand Rare each independently selected from hydrogen and (C-C) alkyl; and Rand Rare each independently selected from (C-C) alkyl.9. The modified macromolecular compound according to claim 8 , wherein R claim 8 , R claim 8 , Rand Rare each independently selected from (C-C) alkyl; and Rand Rare each independently selected from hydrogen and (C-C) alkyl.10. The modified macromolecular compound according to claim 1 , wherein p and o are each independently selected from an integer of 1 and 2; m and u are each independently selected from an integer of 2 and 3; and n and t are each independently selected from and integer of 0 and 1.14. The method according to claim 13 , wherein Mis lithium.15. The method according to claim 13 , wherein Ris selected from —N(R)Rand (C-C) alkyl claim 13 , wherein Rand Rare each independently selected from (C-C) alkyl claim 13 , (C-C) aryl and (C-C) aralkyl.16. ...

METHOD TO PREPARE RUBBER COMPOUNDS CONTAINING SILICON DIOXIDE FOR THE PRODUCTION OF TYRES

A rubber compound containing silicon dioxide for the production of tyres and comprising a polymer base with a cross-linkable unsaturated chain, a filler comprising silicon dioxide, a silane bonding agent and a vulcanization system. The filler further comprises a composite mineral consisting of a mineral of the zeolite family, onto which a layer of silicon dioxide has been deposited. 1. A rubber compound containing silicon dioxide for the production of tyres; said compound comprising a polymer base with a cross-linkable unsaturated chain , a filler comprising silicon dioxide , a silane bonding agent , and a vulcanization system; wherein said filler comprises a composite mineral comprising a mineral of the zeolite family , onto which a layer of silicon dioxide has been deposited.2. The rubber compound according to claim 1 , wherein said filler comprises 50 to 95 phr of silicon dioxide and 5 to 50 phr of said composite mineral.3. The rubber compound according to claim 2 , wherein that said filler comprises 70 to 90 phr of silicon dioxide and 10 to 30 phr of said composite mineral.4. The rubber compound according to claim 1 , wherein said composite mineral is made up of 85 to 95 parts by weight of zeolite and 5 to 15 parts by weight of silicon dioxide.5. The rubber compound according to claim 1 , wherein said mineral of the zeolite family has a quantity of empty volume ranging from 15 to 50% of the total volume.6. The rubber compound according to claim 1 , comprising 5 to 10 phr of silane bonding agent.7. The rubber compound according to claim 1 , wherein said composite mineral is realized by a sequence of the following operations:keeping said mineral of the zeolite family soaked in a silicon dioxide precursor in the liquid state;adding said mineral of the zeolite family soaked in the silicon dioxide precursor to an organic solvent and keeping the solution under agitation;adding a catalyst to the solution for synthesis of the silicon dioxide;precipitating a matrix of ...

Multivinylaminosilanes as branching agents for functionalized elastomeric polymers

The present invention relates to novel polymerizable multivinylaminosilanes which are useful as branching agents for synthetic and natural rubber. The compounds of the invention can be used as such in the polymerization of conjugated diene monomers, optionally together with aromatic vinyl monomers, thus producing polymers, specifically elastomeric polymers, which can favorably be used in rubber articles such as tires.

Rubber composition for tire and pneumatic tire using same

A rubber composition for a tire is disclosed having improved rupture strength and abrasion resistance while maintaining processability that is a property of a liquid rubber. The rubber component contains (A) a hydrogenated copolymer obtained by hydrogenating an aromatic vinyl-conjugated diene copolymer, the hydrogenated copolymer having a weight average molecular weight measured by gel permeation chromatography of 300,000 or more and having a hydrogenation ratio of a conjugated diene moiety of 80 mol % or more, and (B) a liquid rubber, and sulfur, wherein the content of the hydrogenated copolymer (A) is 80 to 95 parts by mass and the content of the liquid rubber (B) is 5 to 20 parts by mass, per 100 parts by mass of the rubber component, and the content of the sulfur is 15 to 30 parts by mass per 100 parts by mass of the liquid rubber (B).

Modified Conjugated Diene-Based Polymer, Method for Preparing the Same and Rubber Composition Including the Same

A neodymium-catalyzed modified conjugated diene-based polymer having excellent affinity with a filler is provided. A method for preparing the same and a rubber composition including the same are also provided. The neodymium-catalyzed modified conjugated diene-based polymer includes a repeating unit derived from a conjugated diene-based monomer; and a functional group derived from a modifier represented by Formula 1 in at least one terminal of a polymer.

Modified Conjugated Diene-Based Polymer and Production Method Therefor, Rubber Composition and Tire

The present invention provides a modified conjugated diene-based polymer having a weight-average molecular weight of 20×10or more and 300×10or less, in which the modified conjugated diene-based polymer having a molecular weight of 200×10or more and 500×10or less is comprised in an amount of 0.25% by mass or more and 30% by mass or less based on a total amount of the modified conjugated diene-based polymer, and a shrinking factor (g′) is less than 0.64. 1. A modified conjugated diene-based polymer having a weight-average molecular weight of 20×10or more and 300×10or less , comprising:{'sup': 4', '4, 'the modified conjugated diene-based polymer having a molecular weight of 200×10or more and 500×10or less in an amount of 0.25% by mass or more and 30% by mass or less based on a total amount of the modified conjugated diene-based polymer,'}wherein a shrinking factor (g′) is less than 0.64.2. The modified conjugated diene-based polymer according to claim 1 , having a nitrogen atom and a silicon atom.3. The modified conjugated diene-based polymer according to claim 1 , wherein the weight-average molecular weight is 50×10or more and 150×10or less.4. The modified conjugated diene-based polymer according to claim 1 , comprising the modified conjugated diene-based polymer having a molecular weight of 200×10or more and 500×10or less in an amount of 1.0% by mass or more and 30% by mass or less based on a total amount of the modified conjugated diene-based polymer.5. The modified conjugated diene-based polymer according to claim 1 , comprising a branch claim 1 ,wherein a branching degree is 5 or more.6. The modified conjugated diene-based polymer according to claim 5 , wherein the branching degree is 6 or more.7. The modified conjugated diene-based polymer according to claim 5 , having one or more of coupling residues and conjugated diene-based polymer chains bonded to the coupling residues claim 5 ,wherein the branch comprises a branch in which five or more of the conjugated ...

METHOD FOR PREPARING RUBBER COMPOSITION USING AMINOSILANE-BASED TERMINAL MODIFIER INTRODUCING FUNCTIONAL GROUP, AND RUBBER COMPOSITION PREPARED THEREBY

The present invention relates to a terminal modified and conjugated diene-based polymer rubber composition including a terminal modified and conjugated diene-based polymer which is characterized in that an aminosilane-based terminal modifier represented by Formula 1 or Formula 2 is combined at the terminal of a conjugated diene-based polymer, and a method for preparing the same. 2. The terminal modified and conjugated diene-based polymer rubber composition of claim 1 , wherein the terminal modified and conjugated diene-based polymer rubber composition comprises 100 parts by weight of the terminal modified and conjugated diene-based polymer claim 1 , and 0.1 to 200 parts by weight of an inorganic filler.3. The terminal modified and conjugated diene-based polymer rubber composition of claim 2 , wherein the inorganic filler is at least one selected from the group consisting of a silica-based filler claim 2 , carbon black claim 2 , and a mixture thereof.8. The method for preparing a terminal modified and conjugated diene-based polymer rubber composition of claim 4 , wherein a molar ratio of the organometallic compound and the compound represented by Formula 1 or Formula 2 is from 1:0.1 to 1:10.9. The method for preparing a terminal modified and conjugated diene-based polymer rubber composition of claim further comprising injecting a polar additive in step a).10. The method for preparing a terminal modified and conjugated diene-based polymer rubber composition of claim 9 , wherein the polar additive is injected in an amount of 0.001 to 10 g based on the total of 1 mmol of the organometallic compound.11. The method for preparing a terminal modified and conjugated diene-based polymer rubber composition of claim 4 , wherein the terminal modified and conjugated diene-based polymer has a number average molecular weight (Mn) of 1 claim 4 ,000 to 2 claim 4 ,000 claim 4 ,000 g/mol.12. A tire or a tire tread claim 1 , comprising the terminal modified and conjugated diene-based ...

MODIFIED CONJUGATED DIENE POLYMER, MODIFIED RUBBER COMPOSITION COMPRISING SAME, AND METHOD FOR PRODUCING MODIFIED CONJUGATED DIENE POLYMER

Disclosed are a method of preparing a modified conjugated diene-based polymer, a modified conjugated diene-based polymer prepared thereby, and a rubber composition and a tire, including the modified conjugated diene-based polymer. The method of preparing the modified conjugated diene-based polymer includes (a) polymerizing a vinyl aromatic monomer and a conjugated diene monomer using an organo-alkali metal compound in the presence of a hydrocarbon solvent, thus forming an active polymer having an alkali metal end and (b) coupling or linking the active polymer having the alkali metal end with a compound represented by Chemical Formula 1. 1. A method of preparing a modified conjugated diene-based polymer , comprising:(a) polymerizing a conjugated diene monomer, or a vinyl aromatic monomer and a conjugated diene monomer, using an organo-alkali metal compound in presence of a hydrocarbon solvent, thus forming an active polymer having an alkali metal end; and {'br': None, 'sup': 1', '2', '3, 'sub': n', '3-n, '(R—O)RSi—R-A\u2003\u2003[Chemical Formula 1]'}, '(b) coupling or linking the active polymer having the alkali metal end with a compound represented by Chemical Formula 1 below{'sup': 1', '2', '3', '1', 'e, 'wherein Ris a C1-C20 hydrocarbon containing at least one oxygen or nitrogen, Rand Rare each a C1-C20 hydrocarbon, A is an amine, and n is an integer of 1 to 3; when n is 2 or 3, two or three Rs are identical to or different from each other; and when n is 1, two Rs are identical to or different from each other.'}2. The method of claim 1 , wherein the active polymer is a random copolymer comprising the conjugated diene monomer and the vinyl aromatic monomer.3. The method of claim 1 , wherein the active polymer contains the conjugated diene monomer and the vinyl aromatic monomer in a ratio ranging from 100:0 to 60:40.4. The method of claim 2 , wherein the random copolymer contains the conjugated diene monomer and the vinyl aromatic monomer in a ratio ranging from 90 ...

END-FUNCTIONAL CONJUGATED DIENE-BASED POLYMER AND METHOD OF PREPARING SAME

Disclosed are a modified conjugated diene-based polymer, a method of preparing the same, and a rubber composition including the same. 6. The modified conjugated diene-based polymer of claim 1 , wherein the modified conjugated diene-based polymer has a number average molecular weight (Mn) of 1 claim 1 ,000 to 2 claim 1 ,000 claim 1 ,000 g/mol.7. The modified conjugated diene-based polymer claim 1 , wherein the modified conjugated diene-based polymer has a polydispersity index (Mw/Mn) of 0.5 to 10.8. The modified conjugated diene-based polymer of claim 1 , wherein the modified conjugated diene-based polymer has a polydispersity index (Mw/Mn) of 1 to 5.9. The modified conjugated diene-based polymer of claim 1 , wherein the modified conjugated diene-based polymer has a vinyl content of 5 wt % or more.10. The modified conjugated diene-based polymer of claim 1 , wherein the conjugated diene-based polymer chain is derived from a homopolymer of a conjugated diene monomer or a copolymer of a conjugated diene monomer and a vinyl aromatic monomer.11. The modified conjugated diene-based polymer of claim 1 , wherein the modified conjugated diene-based polymer includes 0.0001 to 50 parts by weight of an aromatic vinyl monomer based on 100 parts by weight in total of a conjugated diene monomer and the aromatic vinyl monomer.12. The modified conjugated diene-based polymer of claim 1 , wherein the modified conjugated diene-based polymer has a Mooney viscosity of 40 or more.17. The method of claim 13 , wherein the organometallic compound is used in an amount of 0.01 to 10 mmol based on 100 g in total of the monomer.18. The method of claim 13 , wherein a molar ratio of the organometallic compound and the compound represented by Chemical Formula 8 is 1:0.1 to 1:10.19. The method of claim 13 , wherein the polymerizing in (a) is performed with additional use of a polar additive.20. The method of claim 19 , wherein the polar additive is added in an amount of 0.001 to 10 g based on 1 mmol ...

Modified conjugated diene polymer and method for preparing the same

Disclosed are a modified conjugated diene polymer and a method for preparing the same. The modified conjugated diene polymer and the method for preparing the same advantageously provide superior compatibility with an inorganic filler, heat generation, tensile strength and abrasion resistance, low fuel consumption and excellent resistance on wet roads.

Silane-containing carboxy-terminated polymers

The present invention relates to and group-functionalized polymers having, at the and of the polymer chain, a sliane-containing carboxyl group of the formula (I) where R 1 , R 2 are the same or different and are each an H, alkyl, alkoxy, cycloalkyl, cycloalkoxy, aryl, aryloxy, alkaryl, alkaryloxy, aralkyl or aralkoxy radical which may contain one or more heteroatoms, preferably O, N, S or Si, R 3 , R 4 are the same or different and are each an H, alkyl, cycloalkyl, aryl, alkaryl or aralkyl radical which may contain one or more heteroatoms, preferably O, N, S or Si, A is a divalent organic radical which, as well as C and H, may contain one or more heteroatoms, preferably O, N, S or Si.

Initiators for the copolymerisation of diene monomers and vinyl aromatic monomers

The invention relates to the use of an alkali metal salt derivative of a specific vinyl aromatic monomer, as an initiator for the copolymerisation of i) one or more conjugated diene monomers and ii) one or more vinyl aromatic monomers. Furthermore, the invention relates to a process for the preparation of a copolymer component comprising coupled copolymer and terminally modified copolymer, and to the copolymer component. Also, the invention relates to a method for preparing a rubber, and to the rubber. Moreover, the invention relates to a rubber composition comprising the rubber. Finally, the invention relates to a tire component comprising the rubber, and to a tire comprising the tire component.

MODIFICATION MONOMER, MODIFIED CONJUGATED DIENE-BASED POLYMER INCLUDING THE SAME AND METHOD FOR PREPARING THE POLYMER

The present invention relates to a modification monomer and a modified conjugated diene-based polymer including the same, and more particularly, provides a modification monomer represented by Formula 1 and a modified conjugated diene-based polymer including a repeating unit derived therefrom. 2. The modification monomer of claim 1 , whereinin Formula 1,{'sup': '1', 'Ris a divalent hydrocarbon group of 1 to 5 carbon atoms, a heteroatom-containing divalent hydrocarbon group of 1 to 5 carbon atoms, or a linker represented by Formula 2,'}{'sup': 2', '5, 'Rto Rare each independently hydrogen, a monovalent hydrocarbon group of 1 to 5 carbon atoms, or a heteroatom-containing monovalent hydrocarbon group of 1 to 5 carbon atoms, and'}{'sup': 1', '5', '2', '5', '1, 'one or more of Rto Rare required to be a hydrocarbon group including an unsaturated bond, where if Rto Rdo not include an unsaturated bond, Ris required to be a linker represented by Formula 2, and'}in Formula 2,{'sup': 10', '11, 'Rand Rare each independently a single bond, or a divalent hydrocarbon group of 1 to 3 carbon atoms, and'}{'sup': 12', '13, 'Rand Rare each independently hydrogen, or a monovalent hydrocarbon group of 1 to 5 carbon atoms.'}3. The modification monomer of claim 1 , whereinin Formula 1,{'sup': '1', 'Ris a linker represented by Formula 2, and'}{'sup': 2', '5, 'Rto Rare each independently hydrogen, or a monovalent hydrocarbon group of 1 to 5 carbon atoms, and'}in Formula 2,{'sup': 10', '11, 'Rand Rare each independently a single bond, or a divalent hydrocarbon group of 1 to 3 carbon atoms, and'}{'sup': 12', '13, 'Rand Rare each independently hydrogen, or a monovalent hydrocarbon group of 1 to 3 carbon atoms.'}6. The modified conjugated diene-based polymer of claim 5 , wherein the modified conjugated diene-based polymer further comprises a repeating unit derived from an aromatic vinyl monomer.7. The modified conjugated diene-based polymer of claim 5 , wherein the repeating unit derived from the ...

Modified Conjugated Diene-Based Polymer and Rubber Composition Including the Same

A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. In some embodiments, the modified conjugated diene-based polymer includes a functional group derived from a modification monomer represented by Formula 1 and a functional group derived from a modifier, and the polymer has a unimodal molecular weight distribution, and a polydispersity index of 1.0 to less than 1.7. The polymer has excellent processability, tensile properties and viscoelasticity properties. 2. The modified conjugated diene-based polymer of claim 1 , wherein in Formula 1 claim 1 , Ris hydrogen claim 1 , an alkyl group of 1 to 20 carbon atoms claim 1 , a cycloalkyl group of 3 to 20 carbon atoms claim 1 , an aryl group of 6 to 20 carbon atoms claim 1 , an arylalkyl group of 7 to 20 carbon atoms claim 1 , an alkoxy group of 1 to 20 carbon atoms claim 1 , an alkoxyalkyl group of 2 to 20 carbon atoms or a phenoxyalkyl group of 7 to 20 carbon atoms.4. The modified conjugated diene-based polymer of claim 3 , wherein in Formula 2 claim 3 , Rand Rare each independently a single bond claim 3 , or an alkylene group of 1 to 5 carbon atoms claim 3 ,{'sub': a2', 'a3, 'Rand Rare each independently an alkyl group of 1 to 5 carbon atoms, and'}{'sub': 'a5', 'Ris a hydrogen atom, an alkyl group of 1 to 5 carbon atoms, or a tetravalent alkylsilyl group which is substituted with an alkyl group of 1 to 5 carbon atoms.'}5. The modified conjugated diene-based polymer of claim 3 , wherein in Formula 3 claim 3 , Aand Aare each independently an alkylene group of 1 to 10 carbon atoms claim 3 ,{'sub': b1', 'b4, 'Rto Rare each independently an alkyl group of 1 to 10 carbon atoms, and'}{'sub': 1', '4, 'Lto Lare each independently an alkyl group of 1 to 10 carbon atoms, an aryl group of 6 to 12 carbon atoms, or a tetravalent alkylsilyl group which is substituted with an alkyl group of 1 to 5 carbon atoms.'}6. The modified conjugated diene-based polymer of claim 1 , wherein the ...

Diene elastomer having a function in the middle of the chain and rubber composition containing the same

A modified diene elastomer having a good flow resistance, and imparting to a rubber composition containing the same a good compromise of hysteresis and abrasion properties and a satisfactory processing with a view to a tire application is provided. This modified elastomer comprises: a) at least 70% by weight of a linear diene elastomer predominantly functionalized in the middle of the chain by an alkoxysilane group, optionally partly or completely hydrolyzed to silanol, the alkoxysilane group optionally bearing another function capable of interacting with a reinforcing filler, the silicon atom of the alkoxysilane group lying in the main chain of the diene elastomer; b) more than 0 and up to 30% by weight of a star-branched diene elastomer, the Mooney viscosity of said modified diene elastomer varying from 50 to 80 and the glass transition temperature (Tg) thereof varying from −100° C. to −80° C.

METHOD FOR MANUFACTURING MODIFIED POLYMER, MODIFIED POLYMER, RUBBER COMPOSITION AND TIRE

The present disclosure provides a method for manufacturing with high productivity a modified polymer equivalent to the prior art blend of a modified polymer for matrix of a rubber composition and the low-molecular weight polymer. Specifically, a method for manufacturing a modified polymer, including continuously supplying a raw material monomer containing at least conjugated diene compound, a polymerization initiator containing lithium, 1,2-butadiene and a modification agent into a flow-through reactor, causing the raw material monomer to be continuously polymerized to generate polymer and also causing a portion of the polymer thus generated to be modified with the modification agent, is characterized in that: the polymerization and the modification are carried out at temperature equal to 110° C. or higher; and a mole ratio (1,2-Bd/Li) of the 1,2-butadiene (1,2-Bd) with respect to lithium (Li) of the polymerization initiator containing lithium is set to be 0.37 or less. 1. A method for manufacturing a modified polymer , comprising continuously supplying a raw material monomer containing at least conjugated diene compound , a polymerization initiator containing lithium , 1 ,2-butadiene and a modification agent into a flow-through reactor , causing the raw material monomer to be continuously polymerized to generate polymer and also causing a portion of the polymer thus generated to be modified with the modification agent , wherein:the polymerization and the modification are carried out at temperature equal to 110° C. or higher; anda mole ratio (1,2-Bd/Li) of the 1,2-butadiene (1,2-Bd) with respect to lithium (Li) of the polymerization initiator containing lithium is set to be 0.37 or less.2. The method for manufacturing a modified polymer of claim 1 , wherein the modification agent contains at least one of nitrogen atom and silicon atom.3. The method for manufacturing a modified polymer of claim 1 , wherein the raw material monomer further contains an aromatic vinyl ...

Functionalized polymer, rubber composition and pneumatic tire

The present invention is directed to a functionalized elastomer comprising the reaction product of a living anionic elastomeric polymer and a polymerization terminator of formula (1) where the substituent structures are further defined.

Modified Conjugated Diene-based Polymer and Method for Preparing the Same

The present invention relates to a modified conjugated diene-based polymer having a high modification ratio with improved compounding properties by being excellent affinity with a filler and a method for preparing the same. The modified conjugated diene-based polymer thus prepared includes a functional group derived from a compound represented by Formula 1 at one terminal, and has excellent affinity with a filler. If the modified conjugated diene-based polymer is applied to a rubber composition, excellent processability, tensile strength and viscoelasticity may be achieved. 2. The modified conjugated diene-based polymer according to claim 1 , wherein in Formula 1 claim 1 , Rand Rare each independently an alkylene group of 1 to 10 carbon atoms claim 1 ,{'sup': 2', '6', '7, 'Ris a trivalent hydrocarbon group of 1 to 10 carbon atoms, which is substituted with —RCOOR,'}{'sup': 4', '6, 'Rand Rare single bonds,'}{'sup': '7', 'Ris an alkyl group of 1 to 20 carbon atoms, and'}{'sup': 9', '11, 'Rto Rare each independently an alkyl group of 1 to 20 carbon atoms.'}5. The method for preparing the modified conjugated diene-based polymer according to claim 4 , wherein the catalyst composition is prepared by mixing the lanthanide rare earth element-containing compound claim 4 , the first alkylating agent claim 4 , the second alkylating agent claim 4 , the halide and the conjugated diene-based monomer at a temperature of −30° C. to −20° C. in the presence of a hydrocarbon-based solvent claim 4 , and standing at a temperature of −30° C. to −20° C. for 24 hours to 36 hours.7. The method for preparing the modified conjugated diene-based polymer according to claim 4 , wherein the first alkylating agent is one or more aluminoxanes selected from the group consisting of methylaluminoxane claim 4 , modified methylaluminoxane claim 4 , ethylaluminoxane claim 4 , n-propylaluminoxane claim 4 , isopropylaluminoxane claim 4 , n-butylaluminoxane claim 4 , isobutylaluminoxane claim 4 , n- ...

Modified High-Cis Polybutadiene Polymer, Related Methods And Rubber Compositions

Disclosed herein are a process for preparing a modified high-cis polybutadiene polymer, a modified high-cis polybutadiene polymer, and tire components made using the modified high-cis polybutadiene polymer. The processes make use of a functionalizing compound of formula (I) to prepare the modified high-cis polybutadiene from a quantity of 1,3-butadiene monomer using a specified catalyst system. 120-. (canceled)221. The high-cis modified polybutadiene polymer of claim , meeting each of the following:a. has a Mw of 150,000 to 2,000,000 grams/mole;b. has a Mn of 80,000 to 800,000 grams/mole;c. has a Mw/Mn of 1.5 to 4; or{'sub': '1+4', 'd. has an initial Mooney viscosity MLat 100° C. of 40 to 70.'}23. The high-cis modified polybutadiene polymer of claim 21 , wherein Ris selected from hydrocarbylene of C-C.24. The high-cis modified polybutadiene polymer of claim 21 , wherein R′ is selected from alkoxy of Cor C.25. The high-cis modified polybutadiene polymer of claim 21 , wherein X of formula (I) is an epoxy group.26. The high-cis modified polybutadiene polymer of claim 25 , wherein X of formula (I) is a glycidoxy group and the polymer chains are bonded to a carbon atom from the epoxy group.27. The high-cis modified polybutadiene polymer of claim 24 , wherein X of formula (I) is a cyano group.28. The high-cis modified polybutadiene polymer of claim 25 , wherein Ris selected from hydrocarbylene of C-Cand R′ is selected from alkoxy of Cor C.29. The high-cis modified polybutadiene polymer of claim 26 , wherein Ris selected from hydrocarbylene of C-Cand R′ is selected from alkoxy of Cor C.30. The high-cis modified polybutadiene polymer of claim 27 , wherein Ris selected from hydrocarbylene of C-Cand R′ is selected from alkoxy of Cor C.32. The process of claim 31 , wherein the functionalizing compound is used in a molar ratio of 100:1 to 0.5:1 based upon the moles of functionalizing compound:moles of primary metal of the catalyst system.34. The process of claim 31 , wherein X ...

Method for producing a prophylactic article

According to a method for the manufacture of a prophylactic article, especially of a glove, from a (carboxylated) diene rubber, at least one layer of a (carboxylated) diene latex is applied on a former and the (carboxylated) diene latex is cross-linked with a cross-linking agent, wherein a mercapto-functional siloxane polymer is used as cross-linking agent.

MODIFIED CONJUGATED DIENE POLYMER AND SYNTHESIS METHOD THEREOF

Provided is a synthesis method of a modified conjugated diene polymer. Conjugated diene monomers are reacted in a reaction system. A modifier is added into the reaction system while the reaction proceeds to a predetermined extent. The modifier has a structure represented by formula (1): 3. The synthesis method of claim 1 , wherein c/(a+b+c)≦0.6.4. The synthesis method of claim 3 , wherein c=0.5. The synthesis method of claim 1 , wherein 0.2≦a/(a+b+c)≦0.9 and 0.10≦b/(a+b+c)≦0.8.6. The synthesis method of claim 1 , wherein 3≦m≦280.7. The synthesis method of claim 1 , wherein the predetermined extent refers to the reaction system reaching a highest temperature.8. A modified conjugated diene polymer made by the synthesis methods of .11. The modified conjugated diene polymer of claim 9 , wherein c/(a+b+c)≦0.6.12. The modified conjugated diene polymer of claim 11 , wherein c=0.13. The modified conjugated diene polymer of claim 9 , wherein 0.2≦a/(a+b+c)≦0.9 and 0.10≦b/(a+b+c)≦0.8.14. The modified conjugated diene polymer of claim 9 , wherein a/(a+b+c)=0.6 and b/(a+b+c)=0.4.15. The modified conjugated diene polymer of claim 9 , wherein a cis content thereof is greater than 90%.16. A rubber composition comprising silica and the modified conjugated diene polymer of . This application claims the priority benefit of Taiwan application serial no. 101148801, filed on Dec. 20, 2012. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.1. Field of the InventionThe invention is related to a modified conjugated diene polymer and a synthesis method thereof, and more particularly, to a conjugated diene polymer with good compatibility with silica and a synthesis method thereof.2. Description of Related ArtThe conjugated diene polymer is widely used in resin modification and various industrial products, one application of which is the manufacture of tires. With the rising awareness of environmental ...

LAMINATED GLASS

The present invention is a laminated glass which is prepared by inserting a resin intermediate film between glass plates and adhering the glass plates to integrate them, having a bending deflection at 90° C. is 7.3 N/mmor higher, a weight per unit area is 7.5 kg/mor less, 1wherein the resin intermediate film contains a modified hydrogenated block copolymer [E] obtained by introducing an alkoxysilyl group into a hydrogenated block copolymer [D],{'sup': 8', '7, 'storage elastic moduli in the dynamic viscoelastic properties of the resin intermediate film are 5×10Pa or lower at a temperature of −20° C. and 2×10Pa or higher at a temperature of 90° C., and'}the hydrogenated block copolymer [D] is obtained by hydrogenating 90% or more of carbon-carbon unsaturated bonds on a main chain and side chains and carbon-carbon unsaturated bonds on an aromatic ring in a block copolymer [C] which is containing at least two polymer blocks [A] mainly containing a structural unit derived from an aromatic vinyl compound and at least one polymer block [B] mainly containing a structural unit derived from an acyclic conjugated diene compound.. A laminated glass which is prepared by inserting a resin intermediate film between glass plates and adhering the glass plates to integrate them, having a bending deflection at 90° C. is 7.3 N/mmor higher, a weight per unit area is 7.5 kg/mor less, The present invention relates to a lightweight laminated glass, and more specifically to a laminated glass which maintains properties such as rigidity, impact resistance and heat resistance and has lightweightness.Weight reducing for an automobile is a technique useful for environmental protection by lower fuel consumption. For example, it is attempted to reduce the weight by replacement of a part of a metal component with a plastic, use of a window material including a transparent plastic such as a polycarbonate instead of a glass, or the like.However, since a thickness of a transparent plastic plate has to ...

SILICA REINFORCED RUBBER COMPOSITION CONTANING A MULTI-FUNCTIONAL GROUP FUNCTIONALIZED ELASTOMER AND TIRE WITH TREAD

This invention relates to a rubber composition containing filler reinforcement comprised of precipitated silica with silica coupling agent therefore and conjugated diene-based elastomer which contains end-chain functionalization with multi-functional groups. The groups functionalizing the elastomer are multi-functional in the sense of containing one group reactive with at least one of said precipitated silica and silica coupling agent and another different group reactive with diene-based elastomers through sulfur cure of the rubber composition. A sulfur cured rubber composition containing said end-chain functionalization is provided. A tire is provided having a component comprised of said rubber composition. Representative of said tire component is a tire tread. 2. The rubber composition of comprised of: (1) about 10 to about 90 phr of a diene-based elastomer containing at least one end-chain multi-functional group of comprised of at least one of said formula (I) and formula (II), and', '(2) about 90 to about 10 phr of at least one additional diene-based elastomer, and, '(A) 100 phr of conjugated diene-based elastomers comprised of;'}(B) about 40 to about 200 phr of rubber reinforcing filler comprised of a combination of precipitated silica and rubber reinforcing carbon black, together with silica coupling agent having a moiety reactive with silanol groups on said precipitated silica and another different moiety interactive with said diene-based elastomers.3. The rubber composition of wherein claim 1 , for said end-chain multi-functionalized elastomer claim 1 , said end-chain group is a bis(3-trialkoxysilylalkyl) polysulfide of said general formula (I).4. The rubber composition of wherein claim 3 , for said end-chain multi-functional elastomer claim 3 , at least one of said Rradicals of said bis(3-trialkoxysilylalkyl) polysulfide of said general formula (I) is an ethyl radical.5. The rubber composition of wherein claim 4 , for said end-chain multi-functional ...

Rubber mixture and vehicle tires

Disclosed are sulfur-crosslinkable rubber mixtures that can be incorporated into treads of vehicle tires, and vehicle tires comprising the disclosed sulfur-crosslinkable rubber mixtures. The rubber mixtures comprise: at least one diene rubber, at least one silica, at least one hydrocarbon resin, and 1 to 40 phr of at least one liquid polybutadiene having terminal organosilicon modification and having a weight-average molecular weight Mw by GPC of 500 to 12 000 g/mol.

Pneumatic tire

The present invention is directed to a pneumatic tire having a tread comprising a vulcanizable rubber composition comprising, based on 100 parts by weight of elastomer (phr): (A) from about 20 to about 100 phr of a solution polymerized functionalized isoprene-butadiene rubber having a glass transition temperature (Tg) ranging from −100° C. to −50° C., (B) from 0 to about 40 phr of a polybutadiene, (C) from 0 to 20 phr of a process oil, (D) from 40 to 80 phr of a resin having a Tg greater than 30° C., and (E) from 100 to 180 phr of silica.

Silane-Functionalized Hydrocarbon Polymer Modifiers For Elastomeric Compositions

An elastomeric composition and method incorporating a hydrocarbon polymer modifier with improved permanence. The composition comprises elastomer, filler and silane-functionalized hydrocarbon polymer modifier (Si-HPM) made in a pre-reaction adapted to couple the Si-HPM to the elastomer, filler or both, wherein the Si-HPM comprises an interpolymer of monomers chosen from piperylenes, cyclic pentadienes, aromatics, limonenes, pinenes, amylenes, and combinations thereof.

MODIFIED RUBBER CONTAINING SILICON AND PHOSPHORUS, COMPOSITION AND MANUFACTURING METHOD THEREOF

The present invention provides a modified rubber containing silicon and phosphorus, and a composition and manufacturing method thereof. The present invention provides the modified rubber structured as formula (1), 2. The modified rubber of claim 1 , wherein the conjugated diene rubber is a block copolymer.3. The modified rubber of claim 1 , wherein the conjugated diene rubber is a non-block copolymer.4. The modified rubber of claim 1 , wherein at least two of A claim 1 , A claim 1 , A claim 1 , Y claim 1 , and Z are the conjugated diene rubber.5. The modified rubber of claim 1 , wherein by a gel permeation chromatography (GPC) measurement the modified rubber is characterized in having m peaks claim 1 , m is greater than or equal to 1 claim 1 , the first peak (M) represents the lowest weight average molecular weight claim 1 , and Mranges from 5×10to 150×10g/mole claim 1 , 10×10to 150×10g/mole claim 1 , or 15×10to 150×10g/mole.6. The modified rubber of claim 5 , wherein m is greater than 1 claim 5 , the modified rubber has a coupling ratio (CR %) of 10% to 80% claim 5 , 20% to 75% claim 5 , or 30% to 70% claim 5 , and the coupling ratio (CR %)=[(a total integral area of the m peaks−an integral area of the first peak)/the total integral area of the m peaks]×100%.7. The modified rubber of claim 1 , wherein the modified rubber has a weight average molecular weight (Mw) of 15×10to 200×10g/mole claim 1 , 20×10to 180×10g/mole claim 1 , or 25×10to 180×10g/mole.9. The method for manufacturing a modified rubber of claim 8 , wherein the conjugated diene rubber is a block copolymer.10. The method for manufacturing a modified rubber of claim 8 , wherein the conjugated diene rubber is a non-block copolymer.11. The method for manufacturing a modified rubber of claim 8 , wherein the conjugated diene rubber replaces at least two of A claim 8 , A claim 8 , A claim 8 , Y claim 8 , and Z in the compound containing silicon and phosphorus to form the modified rubber.12. The method for ...

Polymerization initiator, modified conjugated diene-based polymer, and methods for preparing them

The present invention relates to a polymerization initiator represented by Formula 1, a modified conjugated diene-based polymer, methods for preparing them, a rubber composition comprising the modified conjugated diene-based polymer, and a tire prepared from the rubber composition. (In Formula 1, the definition of each substituent is the same as defined in the description.)

IMPROVING THE ROLLING RESISTANCE OF DIENE RUBBER TIRES BY MEANS OF SILANE-MODIFIED POLYBUTADIENES

The invention relates to the use of silane-modified polybutadienes in rubber mixtures, in particular for improving the rolling resistance of diene rubber tires. In particular, the invention is directed to silane-modified polybutadienes in rubber mixtures, wherein the polybutadiene comprises the 1,3-butadiene-derived monomer units and wherein the proportion of A in the entirety of the 1,3-butadiene-derived monomer units present in the polybutadiene is from 10 to 60 mol %, and wherein the sum of the proportions of B and C in the entirety of the 1,3-butadiene-derived monomer units present in the polybutadiene is from 40 to 90 mol %. 2. The rubber according to claim 1 , wherein the silane-modified polybutadienes are obtainable by reacting hydroxyl-terminated polybutadienes produced by free-radical polymerization with one or more organosilane compounds.3. The rubber according to claim 1 , wherein the proportion of A) in the entirety of the 1 claim 1 ,3-butadiene-derived monomer units present in the polybutadiene is from 15 to 30 mol % claim 1 , the proportion of B) in the entirety of the 1 claim 1 ,3-butadiene-derived monomer units present in the polybutadiene is from 50 to 70 mol % and the proportion of C) in the entirety of the 1 claim 1 ,3-butadiene-derived monomer units present in the polybutadiene is from 15 to 30 mol %.6. The rubber mixtures according to claim 5 , wherein the silane-modified polybutadiene is employed in an amount of from 0.5 to 25 parts by wt based on 100 parts by wt of rubber.7. The rubber mixtures according to claim 5 , wherein said mixtures comprise 10 to 150 parts by wt of precipitated silica claim 5 , 0 to 100 parts by wt of carbon black and 0.5 to 15 parts by wt of silane-modified polybutadiene according to claim 5 , in each case based on 100 parts by weight of rubber.8. The rubber mixtures according to claim 5 , wherein said mixtures comprise an organosilane.9. The rubber mixtures according to claim 8 , wherein said mixtures comprise 0.5 to ...

END GROUP FUNCTIONALIZATION AGENTS FOR POLYDIENE

The present invention relates to a modified polymer having the structure of Formula (I) and Formula (IV): 13. The process of claim 12 , wherein the catalyst is a mixture of (A) a compound of Formula MA; (B) a halogen containing compound; and (C) an organometallic compound claim 12 , wherein Mis a lanthanide metal; Ais Ccarboxylate.14. The process of claim 12 , wherein the catalyst is a mixture of (A) a compound of Formula M(HA)A; (B) a halogen containing compound; and (C) an organometallic compound claim 12 , wherein Mis a lanthanide metal; Ais Ccarboxylate.15. The process of claim 12 , wherein the catalyst is a compound of Formula Li-Alk claim 12 , wherein Alk is Calkyl.16. The process of claim 12 , wherein the catalyst is a compound of Formula (III): MC(SiHAlk)(R)(III) claim 12 , wherein M is a lanthanide or a transition metal; Alk is Calkyl; Ris halide claim 12 , bis(oxazolinato) claim 12 , carboxylate claim 12 , acetyl acetonate claim 12 , amidate claim 12 , alkoxide claim 12 , amide claim 12 , BR claim 12 , AlR claim 12 , or alkyl aluminate; Ris independently selected at each occurrence thereof from the group consisting of H claim 12 , CF claim 12 , phenyl claim 12 , and Calkyl.20. The process of claim 12 , wherein the modified polymer has 1 claim 12 ,4-cis content of 15 to 99%.21. The process of claim 12 , wherein the modified polymer has more than 90% cis-content.22. The process of claim 12 , wherein the modified polymer has a molecular weight of 10 claim 12 ,000 to 4 claim 12 ,000 claim 12 ,000.23. The process of claim 12 , wherein the modified polymer has a Mooney viscosity of 10 to 100.28. The process of claim 24 , wherein the polymer has a 1 claim 24 ,4-cis content of 15 to 99%.29. The process of claim 24 , wherein the polymer is a polymer of 1 claim 24 ,3-butadiene claim 24 , isoprene claim 24 , 2 claim 24 ,3-dimethyl-1 claim 24 ,3-butadiene claim 24 , 1 claim 24 ,3-pentadiene claim 24 , 1 claim 24 ,3-hexadiene claim 24 , or myrcene.30. The process of ...

SURFACE MODIFICATION METHOD AND GASKET FOR SYRINGE

The present invention aims to provide a method for modifying a surface of a rubber vulcanizate and a gasket for syringes, which can provide a variety of functions, including sliding properties, liquid leakage resistance, and protein adsorption resistance. Provided is a surface modification method for modifying a surface of a rubber vulcanizate having a Shore A hardness of 55 to 90 as a modification target, the method including: step 1 of adding a silane compound to the surface of the modification target; and step 2 of reacting at least a fluoroalkyl group-containing silane compound to form a surface-modified layer. 1. A surface modification method for modifying a surface of a rubber vulcanizate having a Shore A hardness of 55 to 90 as a modification target , the method comprising:step 1 of adding a silane compound to the surface of the modification target; andstep 2 of reacting at least a fluoroalkyl group-containing silane compound to form a surface-modified layer.2. The surface modification method according to claim 1 ,wherein step 2 comprises reacting at least a fluoroalkyl group-containing silane compound and a perfluoroether group-containing silane compound to form a surface-modified layer.3. The surface modification method according to claim 2 ,wherein the fluoroalkyl group-containing silane compound and the perfluoroether group-containing silane compound are combined in a ratio of 1:99 to 100:0.7. The surface modification method according to claim 1 ,wherein the surface-modified layer has a thickness of 30 to 500 nm.8. A gasket for syringes claim 1 , at least partly comprising the surface-modified layer formed by the surface modification method according to .9. The gasket for syringes according to claim 8 ,wherein the gasket has a sliding surface provided with a plurality of annular projections,the annular projections include a first projection nearest to a top surface of the gasket, andthe first projection has a surface roughness Ra of not greater than 1.0. ...

Modified Conjugated Diene-Based Polymer and Rubber Composition Including the Same

A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer prepared by continuous polymerization and having remarkable processability, narrow molecular weight distribution and excellent physical properties, and a rubber composition including the same.

Method Of Making Alkoxysilane Stabilized Polymers, Polymer Compositions And Articles Containing Such Polymers

A method of making a polymer with stable Mooney viscosity is described. A conjugated diolefin is reacted in a hydrocarbon solvent in the presence of an initiator to form a polymer. After forming the polymer, alkoxysilane terminal functionalizing groups are bonded to the polymer. An alkoxysilane stabilizing agent is then added to the polymer in the presence of hydrocarbon oil. The polymer is then desolvatized, resulting in a polymer with stable Mooney viscosity, even over prolonged periods of time. Compositions and articles containing the polymer are also described.

Conjugated Diene-Based Polymer, Branching Agent, Production Method for Conjugated Diene-Based Polymer, Oil Extended Conjugated Diene-Based Polymer, Rubber Composition, and Tire

A conjugated diene-based polymer of the present invention has a branch number (Bn) measured by viscosity detector-equipped GPC-light scattering measurement of 8 or more, has a change (ΔT) of an oxidation onset temperature caused through application of a thermal load of 11.9° C. or less, and contains an aromatic vinyl compound monomer unit. 1. A conjugated diene-based polymer having a branch number (Bn) measured by viscosity detector-equipped GPC-light scattering measurement of 8 or more , having a change (ΔT) of an oxidation onset temperature caused through application of a thermal load of 11.9° C. or less , and comprising an aromatic vinyl compound monomer unit.2. The conjugated diene-based polymer according to claim 1 , wherein the change (ΔT) of an oxidation onset temperature caused through application of the thermal load is 10° C. or less.3. The conjugated diene-based polymer according to claim 1 , having a modification ratio of 60% by mass or more.4. The conjugated diene-based polymer according to claim 1 , wherein a content of the aromatic vinyl compound monomer unit is 10% by mass or more.5. The conjugated diene-based polymer according to claim 1 ,wherein the conjugated diene-based polymer is a conjugated diene-based polymer having a star polymer structure having 3 or more branches,at least one branched chain of the star polymer structure comprises a portion derived from a vinyl-based monomer containing an alkoxysilyl group or a halosilyl group, and the portion derived from the vinyl-based monomer containing the alkoxysilyl group or the halosilyl group further comprises a main chain branch structure.7. The conjugated diene-based polymer according to claim 6 , containing the monomer unit based on the compound represented by the formula (1) wherein Ris a hydrogen atom claim 6 , and m is 0.8. The conjugated diene-based polymer according to claim 6 , containing the monomer unit based on the compound represented by the formula (2) wherein m is 0 and b is 0.9. The ...

Rubber Composition for a Tire Tread and Pneumatic Tire Using the Same

A rubber composition for a tire tread contains a diene rubber, silica, and a cured product; a content of the silica being from 20 to 100 parts by mass per 100 parts by mass of the diene rubber, a content of the cured product being from 0.3 to 30 parts by mass per 100 parts by mass of the diene rubber; the diene rubber containing a natural rubber and a modified butadiene rubber having a polyorganosiloxane group at a terminal, a content of the natural rubber in the diene rubber being from 30 to 90 mass %, a content of the modified butadiene rubber in the diene rubber being from 10 to 70 mass %; the cured product being a cured product obtained by curing a crosslinkable oligomer or polymer that is incompatible with the diene rubber; and a JIS A hardness of the cured product being from 3 to 45. 1. A rubber composition for a tire tread comprising: a diene rubber , silica , and a cured product;a content of the silica being from 20 to 100 parts by mass per 100 parts by mass of the diene rubber, a content of the cured product being from 0.3 to 30 parts by mass per 100 parts by mass of the diene rubber;the diene rubber containing a natural rubber and a modified butadiene rubber having a polyorganosiloxane group at a terminal, a content of the natural rubber in the diene rubber being from 30 to 90 mass %, a content of the modified butadiene rubber in the diene rubber being from 10 to 70 mass %; andthe cured product being a cured product obtained by curing a crosslinkable oligomer or polymer that is incompatible with the diene rubber, JIS A hardness of the cured product being from 3 to 45.2. The rubber composition for a tire tread according to claim 1 , wherein the polyorganosiloxane group is a group bonded to a terminal of a butadiene chain through a linking group formed from a divalent hydrocarbon group from 1 to 20 carbons which may have a substituent or through an ether group;{'sub': '2', 'a part of —CH— of the linking group formed from a divalent hydrocarbon group from 1 ...

METHOD OF PRODUCTION OF MODIFIED CONJUGATED DIENE RUBBER

A method of production of a modified conjugated diene rubber including a first step of polymerizing a monomer containing at least a conjugated diene compound by using a polymerization initiator in an inert solvent so as to obtain a conjugated diene polymer having an active end, and a second step of causing a compound represented by a following formula (1) to react with the active end of the conjugated diene polymer having an active end: 2. The method of production of a modified conjugated diene rubber according to claim 1 , whereinin the second step, the compound represented by the formula (1) is added into an inert solvent in which the conjugated diene polymer having an active end is present in a ratio of 1 to 3 moles with respect to 1 mole of the active end of the conjugated diene polymer having an active end.3. The method of production of a modified conjugated diene rubber according to claim 1 , whereinthe conjugated diene polymer having an active end contains 50 to 100 wt % of conjugated diene monomer units and 0 to 50 wt % of aromatic vinyl monomer units.4. The method of production of a modified conjugated diene rubber according to claim 1 , wherein{'sup': 1', '3', '4', '5, 'in the formula (1), each of Rto Rindependently is a methyl group or ethyl group, Ris a benzyl group, phenethyl group, or phenylpropyl group, Ris a methyl group, ethyl group, or propyl group, and “n” is an integer of 3 to 5.'}5. A modified conjugated diene rubber obtained by the method of production of a modified conjugated diene rubber according to .6. A rubber composition comprising 100 parts by weight of rubber ingredient containing the modified conjugated diene rubber according to and 10 to 200 parts by weight of silica.7. The rubber composition according to claim 6 , further comprising a cross-linking agent.8. A cross-linked rubber obtained by cross-linking the rubber composition according to .9. A tire including the cross-linked rubber according to . The present invention relates to a ...

METHOD OF PRODUCTION OF CONJUGATED DIENE RUBBER

Production of a conjugated diene rubber includes polymerizing isoprene or a monomer mixture containing isoprene and an aromatic vinyl monomer in an inert solvent by using a polymerization initiator so as to form a polymer block (A) having an active end, mixing the polymer block (A) having an active end and 1,3-butadiene or a monomer mixture containing 1,3-butadiene and an aromatic vinyl monomer to continue a polymerization reaction so as to obtain a conjugated diene polymer chain having an active end and containing a polymer block (A) and a polymer block (B), and reacting a compound represented by the following general formula (1) with the active end of the conjugated diene polymer chain having an active end: 2. The method of production of a conjugated diene rubber according to further comprising claim 1 , after obtaining the conjugated diene polymer chain having an active end claim 1 , a step of reacting part of the active ends with a tin halide claim 1 , silicon halide claim 1 , or compound represented by the general formula (2):{'br': None, 'sup': 2', '4', '2, 'sub': 3', '3, '(X\ue8a0M-R-M\ue8a0X)\u2003\u2003(2)'}{'sup': 4', '2, 'wherein, in the general formula (2), Rrepresents a substituted or unsubstituted bivalent hydrocarbon group, Xrepresents a halogen group, and M represents a silicon atom or tin atom.'}3. The method of production of a conjugated diene rubber according to wherein in the conjugated diene polymer chain having an active end claim 1 , a weight ratio of the polymer block (A) and polymer block (B) is claim 1 , by (weight of polymer block (A))/(weight of polymer block (B)) claim 1 , 0.001 to 0.1.4. The method of production of a conjugated diene rubber according to wherein claim 1 , in the general formula (1) claim 1 , Rand Rbond with each other to form a piperazine ring structure together with the nitrogen atom represented by the “N” in the general formula (1).5. A conjugated diene rubber obtained by the method of production according to .6. A ...

TIRE

A purpose of the present invention is to provide a tire assuring that clogging of snow and sticking of snow are inhibited, particularly a tire assuring that clogging of snow and sticking of snow can be inhibited and having good performance on ice and snow and abrasion resistance without depending on the tread pattern form while maintaining wet grip performance and abrasion resistance. The tire is composed of a rubber composition which comprises a rubber component comprising a modified butadiene rubber and silica and has a pure water contact angle of from 125° to 140°. 1. A tire composed of a rubber composition which comprises a rubber component comprising a modified butadiene rubber and silica and has a pure water contact angle of from 125° to 140°.2. The tire of claim 1 , wherein an amount of filler gel in the rubber composition is not less than 45% by mass.3. The tire of claim 1 , wherein the rubber composition comprises the modified butadiene rubber and silica as a masterbatch.4. The tire of claim 2 , wherein the rubber composition comprises the modified butadiene rubber and silica as a masterbatch. The present invention relates to a tire composed of a predetermined rubber composition.So far methods of improving grip performance on ice and snow of tires for use in winter such as a studless tire and a snow tire have been proposed, for example, a method of increasing adhesive friction force by decreasing a hardness (Hs) of a rubber composition for a tread, thereby decreasing an elastic modulus at low temperature (improving low temperature property), a method of obtaining a gripping force on an ice- and snow-covered road by providing predetermined sipes on a block surface of a tread, and a method of obtaining a gripping force by providing, on a tread surface, deep lateral grooves for compressing snow and gripping the compressed snow during running.The sipes provided on a block surface of a tread come into contact with ice and snow on a road, thereby making it ...

POLYMER LATEX COMPOSITION FOR THE PREPARATION OF AN ELASTOMERIC FILM HAVING SELF-HEALING PROPERTIES

An aqueous polymer latex composition is described for the preparation of an elastomeric film comprising: 2. The aqueous polymer latex composition of claim 1 , wherein the mixture of ethylenically unsaturated monomers comprises:a) 15 to 99 wt.-% of conjugated dienes;b) 1 to 80 wt.-% of ethylenically unsaturated nitrile compounds;c) 0.05 to 10 wt.-% of ethylenically unsaturated compounds bearing functional groups (a);d) 0 to 50 wt.-% of vinyl aromatic monomers; ande) 0 to 65 wt.-% of co-polymerizable ethylenically unsaturated compounds,wherein monomers a) to e) are different from each other and the weight percentages being based on the total monomers in the mixture.4. The aqueous polymer latex composition of claim 1 , wherein the mixture of ethylenically unsaturated monomers for latex polymer (I) comprises:a) 20 to 99 wt.-% of conjugated dienes;b) 1 to 60 wt.-% of monomers selected from ethylenically unsaturated nitrile compounds;c) 0.05 to 7 wt.-% of ethylenically unsaturated acid;d) 0 to 40 wt.-% of vinyl aromatic monomers;{'sub': 1', '8, 'e1) 0 to 25 wt.-% of Cto Calkyl(meth)acrylates;'}e3) 0 to 10 wt.-% of ethylenically unsaturated compounds bearing amide groups; ande4) 0 to 10 wt.-% of vinyl esters,the weight percentages being based on the total monomers in the mixture.5. The aqueous polymer latex composition of claim 1 , wherein the functional group (a) is a carboxylic acid group claim 1 , a salt or anhydride thereof and functional group (b) is an oxirane group.6. The aqueous polymer latex composition of claim 1 , wherein the latex polymer (I) and the cross-linking component (II) are present in relative amounts to provide a molar ratio of functional groups (b) to functional group (a) from 0.1 to 2.7. The aqueous polymer latex composition of claim 1 , wherein the latex particles exhibit a gradient of the concentration of the functional group (a) with a higher concentration of functional groups (a) at the surface of the particles and a lower concentration within ...

END GROUP FUNCTIONALIZATION AGENTS FOR POLYDIENE

The present invention relates to a modified polymer having the structure of Formula (I) and Formula (IV): 17.-. (canceled)1234.-. (canceled)4144.-. (canceled)45. The process of claim 40 , wherein the modified polymer has 1 claim 40 ,4-cis content of 15 to 99%.46. The process of claim 40 , wherein the modified polymer has more than 90% cis-content.47. The process of claim 40 , wherein the modified polymer has a molecular weight of 10 claim 40 ,000 to 4 claim 40 ,000 claim 40 ,000.48. The process of claim 40 , wherein the modified polymer has a Mooney viscosity of 10 to 100.50. The process of claim 49 , wherein the polymer has a 1 claim 49 ,4-cis content of 15 to 99%.51. The process of claim 49 , wherein the polymer is a polymer of 1 claim 49 ,3-butadiene claim 49 , isoprene claim 49 , 2 claim 49 ,3-dimethyl-1 claim 49 ,3-butadiene claim 49 , 1 claim 49 ,3-pentadiene claim 49 , 1 claim 49 ,3-hexadiene claim 49 , or myrcene.52. The process of claim 49 , wherein the polymer is a polymer of isoprene.53. The process of claim 49 , wherein the polymer is a polymer of butadiene54. A modified polymer prepared by the process of .55. A composition comprising:{'claim-ref': {'@idref': 'CLM-00049', 'claim 49'}, 'a modified polymer prepared according to and'}a filler blended with said modified polymer.56. The composition of claim 49 , wherein the filler is carbon black or silica.57. A rubber composition comprising:a natural rubber;{'claim-ref': {'@idref': 'CLM-00049', 'claim 49'}, 'a modified polymer prepared by the process of ; and'}a filler. This application claims the priority benefit of U.S. Provisional Patent Application Ser. No. 62/574,963, filed Oct. 20, 2017, which is hereby incorporated by reference in its entirety.The present invention relates to an end group functionalization agents for polydiene.Since fuel economies and the need to preserve the environment have become priorities, the tire industry has been challenged to design tires that have improved rolling resistance ...

Functionalized Polymer, Process For Preparing And Rubber Compositions Containing The Functionalized Polymer

Disclosed herein are a functionalized diene monomer-containing polymer containing first and second functionalizing groups, processes for preparing the functionalized polymer, and rubber compositions containing the functionalized polymer. The functionalized polymer contains polymer chains comprises of at least one conjugated diene monomer optionally in combination with at least one vinyl aromatic monomer wherein each polymer chain is functionalized at its chain end with at least the first functionalizing group and is coupled via the first functionalizing group to the second functionalizing group.

Method For Preparing Modified And Conjugated Diene-Based Polymer And Modified And Conjugated Diene-Based Polymer Prepared Using The Same

The present invention provides a method for preparing a modified and conjugated diene-based polymer, which may prevent processability degradation by restraining the increase of mooney viscosity during post-treatment using steam with high temperature or storage for a long time by stabilizing a modified polymer using a modification stabilizer, and a modified and conjugated diene-based polymer prepared by the preparation method.

Compatibilized Tire Tread Compositions

A polyolefin-polybutadiene block-copolymer and a tire tread composition comprising the polyolefin-polybutadiene block-copolymer, the composition comprising, by weight of the composition, within the range from 15 to 60 wt % of a styrenic copolymer, processing oil, filler, a curative agent, and from 4 to 20 wt % of a polyolefin-polybutadiene block-copolymer, wherein the polyolefin-polybutadiene block-copolymer is a block copolymer having the general formula PO-XL-fPB; where “PO” is a polyolefin block having a weight average molecular weight within the range from 1000 to 150,000 g/mole, the “fPB” is a functionalized polar polybutadiene block having a weight average molecular weight within the range from 500 to 30,000 g/mole, and “XL” is a cross-linking moiety that covalently links the PO and fPB blocks; and wherein the maximum Energy Loss (Tangent Delta) of the immiscible polyolefin domain is a temperature within the range from −30° C. to 10° C.

CONJUGATED DIENE GRAFT POLYMER AND METHOD FOR PRODUCING THE SAME

To provide a conjugated diene graft polymer having high transparency, heat resistance and weather resistance, and a method for producing the conjugated diene graft polymer. A method for producing a conjugated diene graft polymer in which a side chain (b) including a polymer including at least one monomer unit selected from the group consisting of a conjugated diene unit and an aromatic vinyl compound unit is bonded to a main chain (a) including a polymer including a conjugated diene unit, via a hetero atom Z serving as a branching point and having a valence of not less than 3, the method including a step of reacting a specific active end polymer and a specific functional group-modified conjugated diene polymer having a functional group in a side chain to thereby produce a conjugated diene graft polymer; and a step of recovering the conjugated diene graft polymer obtained. 2. The method for producing a conjugated diene graft polymer according to claim 1 , further comprising:(A-2) at least partially deactivating at least one remaining functional group selected from the group consisting of an alkoxy group and a hydroxyl group in the conjugated diene graft polymer; before the recovering (B).3. The method for producing a conjugated diene graft polymer according to claim 1 , wherein Z in the formula (II) is Si.4. The method for producing a conjugated diene graft polymer according to claim 1 , wherein the functional group V in the formula (II) is an alkoxy group.5. The method for producing a conjugated diene graft polymer according to claim 1 , wherein the average number of the side chains (b) bonded to one branching point is not less than 0.5.6. A conjugated diene graft polymer in which a side chain (b) comprising a polymer comprising at least one monomer unit selected from the group consisting of a conjugated diene unit and an aromatic vinyl compound unit is bonded to a main chain (a) comprising a polymer comprising a conjugated diene unit claim 1 , via one hetero atom ...

Polymer composition, cross-linked product and tire

A polymer composition includes a polymer (A) having, when composition ratios (molar ratios) of a structural unit represented by formula (1), a structural unit represented by formula (2), a structural unit represented by formula (3), and a structural unit represented by formula (4) in the polymer (A) are p, q, r, and s, respectively, a value α represented by formula (i) of 0.60 or more:with a weight average molecular weight (Mw) of 1.0×105 to 2.0×106 in terms of polystyrene measured by gel permeation chromatography, and a carbon-carbon unsaturated bond; and a paraffin wax (B) having a melting point of 70° C. or more.

Modified Conjugated Diene-Based Polymer and Rubber Composition Including the Same

A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. In some embodiments, the modified conjugated diene-based polymer includes a modified monomer-derived functional group represented by Formula 1, and an aminoalkoxysilane-based modifier-derived functional group at least one end thereof, wherein the polymer having a unimodal molecular weight distribution, and a polydispersity index (PDI) of 1.0 or more to less than 1.7. The polymer has a narrow and unimodal molecular weight distribution, and has excellent tensile properties and viscoelastic properties while having excellent processability. 1. A modified conjugated diene-based polymer ,a modified monomer-derived functional group represented by Formula 1; and {'br': None, 'sub': 1', '1, 'F—R\u2003\u2003[Formula 1]'}, 'an aminoalkoxysilane-based modifier-derived functional group at least one end thereofwherein, in Formula 1,{'sub': 1', '1, 'Fis an amine-containing functional group, and Ris an alkenyl group having 2 to 10 carbon atoms,'}wherein the polymer having a unimodal molecular weight distribution, and a polydispersity index (PDI) of 1.0 or more to less than 1.7.5. The modified conjugated diene-based polymer of claim 4 , wherein claim 4 , in Formula 4 claim 4 , Rand Rare each independently a single bond or an alkylene group having 1 to 5 carbon atoms claim 4 ,{'sub': a2', 'a3, 'Rand Rare each independently an alkyl group having 1 to 5 carbon atoms, and'}{'sub': 'a5', 'Ris a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a tetravalent alkylsilyl group substituted with an alkyl group having 1 to 5 carbon atoms.'}6. The modified conjugated diene-based polymer of claim 4 , wherein claim 4 , in Formula 5 claim 4 , Aand Aare each independently an alkylene group having 1 to 10 carbon atoms claim 4 ,{'sub': b1', 'b4, 'Rto Rare each independently an alkyl group having 1 to 10 carbon atoms, and'}{'sub': 1', '4, 'Lto Lare each independently an alkyl group ...

Rubber composition for tire tread and tire manufactured by using the same

Provided is an all-season tire tread rubber composition in which braking performance and wear performance are secured at the same time. A rubber composition for tire tread according to the present disclosure comprises: 100 parts by weight of raw rubber comprising solution polymerized styrene-butadiene rubber which has a styrene content of 20 to 30 wt % and a vinyl content within butadiene of 20 to 30 wt %, and is manufactured by a continuous method; 90 to 110 parts by weight of silica; and 20 to 40 parts by weight of modified liquid butadiene rubber.

MODIFIED CONJUGATED DIENE-BASED POLYMER, METHOD FOR PREPARING THE SAME AND RUBBER COMPOSITION COMPRISING THE SAME

The present invention relates to a modified conjugated diene-based polymer, a method of preparing the same, and a rubber composition including the same, and more specifically provides a rubber composition which includes a repeating unit derived from a conjugated diene-based monomer having a trans-1,4 bond content of 80 wt % or more and a functional group derived from an alkoxysilane-based modifier, a method of preparing the same, and a rubber composition including the same. 1. A modified conjugated diene-based polymer , comprising a repeating unit derived from a conjugated diene-based monomer having a trans-1 ,4 bond content of 80 wt % or more , and a functional group derived from an alkoxysilane-based modifier.2. The modified conjugated diene-based polymer according to claim 1 , wherein the modified conjugated diene-based polymer includes a repeating unit derived from an aromatic vinyl monomer.3. The modified conjugated diene-based polymer according to claim 2 , wherein the modified conjugated diene-based polymer is a random copolymer including the repeating unit derived from a conjugated diene-based monomer at 50 to 95 wt % and the repeating unit derived from an aromatic vinyl monomer at 5 to 50 wt %.5. The modified conjugated diene-based polymer according to claim 1 , wherein the modified conjugated diene-based polymer is a terminal modified conjugated diene-based polymer.6. The modified conjugated diene-based polymer according to claim 1 , wherein a modification ratio of the modified conjugated diene-based polymer is 50% or more.7. The modified conjugated diene-based polymer according to claim 1 , wherein the modified conjugated diene-based polymer has a number average molecular weight (Mn) in a range of 10 claim 1 ,000 to 500 claim 1 ,000 g/mol and a molecular weight distribution (Mw/Mn) in a range of 1.1 to 3.8. A method of preparing a modified conjugated diene-based polymer claim 1 , comprising:i) polymerizing a conjugated diene-based monomer in the presence ...

AMINE COMPOUND, MODIFIED CONJUGATED DIENE-BASED POLYMER CONTAINING FUNCTIONAL GROUP DERIVED THEREFROM, AND METHOD OF PREPARING THE MODIFIED CONJUGATED DIENE-BASED POLYMER

The present invention relates to a modified conjugated diene-based polymer containing a functional group derived from a tertiary amine compound represented by Formula 1, a method of preparing the same, and a tertiary amine compound represented by Formula 1. 2. The modified conjugated diene-based polymer of claim 1 , wherein in Formula 1 claim 1 ,A is an alkylene group of 1 to 10 carbon atoms, and{'sub': 1', '3, 'Xto Xare each independently an oxygen atom or an oxygen-containing alkylene group of 1 to 2 carbon atoms.'}4. The modified conjugated diene-based polymer of claim 1 , wherein the polymer has a number average molecular weight of 150 claim 1 ,000 g/mol to 1 claim 1 ,000 claim 1 ,000 g/mol.5. The modified conjugated diene-based polymer of claim 1 , wherein the polymer has molecular weight distribution (Mw/Mn) of 1.0 to 3.0.6. The modified conjugated diene-based polymer of claim 1 , wherein the polymer comprises an aromatic vinyl-based monomer unit in 40 wt % or less.9. The method of preparing a modified conjugated diene-based polymer of claim 8 , wherein the organometal compound is used in 0.01 mmol to 10 mmol based on total 100 g of the monomers.10. The method of preparing a modified conjugated diene-based polymer of claim 8 , wherein the organometal compound is one or more selected from the group consisting of methyllithium claim 8 , ethyllithium claim 8 , propyllithium claim 8 , n-butyllithium claim 8 , s-butyllithium claim 8 , t-butyllithium claim 8 , hexyllithium claim 8 , n-decyllithium claim 8 , t-octyllithium claim 8 , phenyllithium claim 8 , 1-naphthyl lithium claim 8 , n-eicosyl lithium claim 8 , 4-butylphenyl lithium claim 8 , 4-tolyl lithium claim 8 , cyclohexyl lithium claim 8 , 3 claim 8 ,5-di-n-heptylcyclohexyl lithium claim 8 , 4-cyclopentyl lithium claim 8 , naphthyl sodium claim 8 , naphthyl potassium claim 8 , lithium alkoxide claim 8 , sodium alkoxide claim 8 , potassium alkoxide claim 8 , lithium sulfonate claim 8 , sodium sulfonate claim 8 ...

Method Of Making Polymers, Polymer Compositions And Articles Containing Such Polymers

A method of making a polymer with stable Mooney viscosity and molecular weight is described. A conjugated diolefin is reacted in a hydrocarbon solvent in the presence of an initiator to form a polymer. After forming the polymer, alkoxy silane terminal functionalizing groups are bonded to the polymer. A stabilizing agent having the formula (R) 4-n Si(OH)n wherein R is a C 1 to C 18 alkyl, C 1 to C 18 alkyl group containing a heteroatom such as nitrogen or oxygen, C 4 to C 8 cycloalkyl, or C 6 to C 18 aromatic group is then added to the polymer, optionally in the presence of hydrocarbon oil. The polymer is then desolvatizing, resulting in a polymer with stable Mooney viscosity and molecular weight, even over prolonged periods of time. Compositions and articles containing the polymer are also described.

Modified Conjugated Diene-Based Polymer and Production Method Therefor, Rubber Composition and Tire

In a modified conjugated diene-based polymer, a ratio of a coupling polymer, obtained by gel permeation chromatography (GPC), is 70% by mass or more based on a total amount of the modified conjugated diene-based polymer, and a modification ratio obtained by adsorption GPC is 70% by mass or more based on a total amount of the modified conjugated diene-based polymer, and when Mooney viscosity ML(100° C.) measured at 100° C. is represented by ML and a weight average molecular weight obtained by GPC is represented by Mw, ML 1.8 (Mw×10)−31.5, and Mooney viscosity ML(100° C.) measured at 100° C. is 30 to 150. 1. A modified conjugated diene-based polymer ,wherein a ratio of a coupling polymer, obtained by gel permeation chromatography (GPC), is 70% by mass or more based on a total amount of the modified conjugated diene-based polymer, and a modification ratio obtained by adsorption GPC is 70% by mass or more based on a total amount of the modified conjugated diene-based polymer,{'sub': '1+4', 'sup': '−4', 'when Mooney viscosity ML(100° C.) measured at 100° C. is represented by ML and a weight average molecular weight obtained by GPC is represented by Mw, ML≤1.8 (Mw×10)−31.5, and'}{'sub': '1+4', 'Mooney viscosity ML(100° C.) measured at 100° C. is 30 to 150.'}2. The modified conjugated diene-based polymer according to claim 1 , wherein the modified conjugated polymer has a nitrogen atom and/or a silicon atom.3. The modified conjugated diene-based polymer according to claim 1 , wherein the modified conjugated polymer has a silicon atom claim 1 , and at least one of the silicon atom constitutes an alkoxysilyl group having 1 to 20 carbon atoms or a silanol group.4. The modified conjugated diene-based polymer according to claim 1 ,{'sub': 1', '2', '1', '2, 'wherein when a peak top molecular weight, obtained by GPC, of a coupling polymer of the modified conjugated diene-based polymer is represented by Mpand a peak top molecular weight of a non-coupling polymer of a conjugated ...

MODIFIED AND CONJUGATED DIENE-BASED POLYMER AND METHOD FOR PREPARING THEREOF

The present invention provides a compound represented by Formula 1, a modified and conjugated diene-based polymer with a high modification ratio, which includes a functional group derived from the compound, a method for preparing the polymer, a rubber composition including the polymer, and a tire manufactured from the rubber composition. 2. The compound of claim 1 , wherein in Formula 1 claim 1 ,{'sup': 1', '11', '12', '11', '12, 'sub': 'x', 'Ris selected from the group consisting of an alkyl group of 1 to 20 carbon atoms, a cycloalkyl group of 3 to 20 carbon atoms, an aryl group of 6 to 20 carbon atoms, an arylalkyl group of 7 to 20 carbon atoms, an alkoxy group of 1 to 20 carbon atoms, an alkoxyalkyl group of 2 to 20 carbon atoms, a phenoxyalkyl group of 7 to 20 carbon atoms, an aminoalkyl group of 1 to 20 carbon atoms, and —[RO]R(where Ris an alkylene group of 2 to 10 carbon atoms, Ris selected from the group consisting of a hydrogen atom, an alkyl group of 1 to 10 carbon atoms, a cycloalkyl group of 3 to 12 carbon atoms, an aryl group of 6 to 18 carbon atoms, and an arylalkyl group of 7 to 18 carbon atoms, and x is an integer of 2 to 10).'}3. The compound of claim 1 , wherein in Formula 1 claim 1 ,{'sup': 1', '11', '12', '11', '12, 'sub': 'x', 'Ris selected from the group consisting of an alkyl group of 1 to 10 carbon atoms, a cycloalkyl group of 3 to 12 carbon atoms, an aryl group of 6 to 12 carbon atoms, an arylalkyl group of 7 to 12 carbon atoms, an alkoxyalkyl group of 2 to 10 carbon atoms, a phenoxyalkyl group of 7 to 12 carbon atoms, an aminoalkyl group of 1 to 10 carbon atoms, and —[RO]R(where Ris an alkylene group of 2 to 10 carbon atoms, Ris selected from the group consisting of a hydrogen atom, an alkyl group of 1 to 10 carbon atoms, a cycloalkyl group of 3 to 12 carbon atoms, an aryl group of 6 to 18 carbon atoms, and an arylalkyl group of 7 to 18 carbon atoms, and x is an integer of 2 to 10),'}{'sup': '2', 'Ris an alkylene group of 1 to 6 carbon ...

RESIN-EXTENDED ELASTOMER

A resin-extended elastomer comprises an elastomer which is a synthetic diene elastomer with a number-average molar mass of greater than or equal to 200,000 g/mol and a resin which is a plasticizing hydrocarbon-based resin. A process for obtaining such a resin-extended elastomer and compositions, semi-finished products for tires and tires containing same are also disclosed. 138.-. (canceled)39. A resin-extended elastomer , the elastomer of which is a synthetic diene elastomer with a number-average molar mass of greater than or equal to 200 ,000 g/mol and the resin of which is a plasticizing hydrocarbon-based resin.40. The resin-extended elastomer according to claim 39 , wherein the number-average molar mass of the synthetic diene elastomer is in a range extending from 250 claim 39 ,000 g/mol to 450 claim 39 ,000 g/mol.41. The resin-extended elastomer according to claim 39 , wherein the synthetic diene elastomer is obtained by solution polymerization.42. The resin-extended elastomer according to claim 39 , wherein the plasticizing hydrocarbon-based resin has a number-average molar mass of between 400 and 2000 g/mol.43. The resin-extended elastomer according to claim 39 , wherein the plasticizing hydrocarbon-based resin is selected from the group consisting of aliphatic resins claim 39 , aromatic resins and mixtures thereof.44. The resin-extended elastomer according to claim 43 , wherein the plasticizing hydrocarbon-based resin is selected from the group consisting of cyclopentadiene homopolymer or copolymer resins claim 43 , dicyclopentadiene homopolymer or copolymer resins claim 43 , terpene homopolymer or copolymer resins claim 43 , C5 fraction homopolymer or copolymer resins claim 43 , C9 fraction homopolymer or copolymer resins claim 43 , mixtures of C5 fraction homopolymer or copolymer resins and of C9 fraction homopolymer or copolymer resins claim 43 , α-methylstyrene homopolymer or copolymer resins claim 43 , and mixtures thereof.45. The resin-extended ...

FUNCTIONALISED POLYBUTADIENE SYNTHESIS PROCESS

A process for preparing a functionalized polybutadiene is provided. The process comprises the following steps: 2. The process according to claim 1 , wherein claim 1 , in the catalytic system claim 1 , the aluminium to rare earth salt molar ratio has a value between 1 and 4.3. The process according to claim 1 , wherein the polymerization is carried out at a temperature between 45° C. and 75° C.4. The process according to claim 1 , wherein claim 1 , in the catalytic system claim 1 , said salt is neodymium tris[bis(2-ethylhexyl)phosphate].5. The process according to claim 1 , wherein the functionalizing agent to aluminium molar ratio is at least 1.6. The process according to claim 1 , wherein for the functionalizing agent of formula A-R—B claim 1 , A is selected from glycidylaminos claim 1 , isocyanates claim 1 , imines and imidazoles.7. The process according to claim 1 , wherein for the functionalizing agent of formula A-R—B claim 1 , B is a dialkoxysilane.8. The process according to claim 1 , wherein for the functionalizing agent of formula A-R—B claim 1 , Ris an aliphatic divalent C-Cradical.9. The process according to claim 1 , wherein the polyfunctional compound to aluminium molar ratio is less than 0.3.10. The process according to claim 1 , wherein the polyfunctional compound corresponds to the formula (E)-R claim 1 , with n denoting an integer greater than or equal to 3 claim 1 , E denoting said functional group and R denoting an atom or a group of atoms bearing the n groups E.11. The process according to claim 1 , wherein in the polyfunctional compound claim 1 , said functional group is selected from glycidylaminos claim 1 , isocyanates claim 1 , imines and imidazoles.12. The process according to claim 1 , wherein the polyfunctional compound is tetraglycidylaminodiphenylmethane.13. A functionalized polybutadiene obtained by the process according to claim 1 , comprising free polybutadiene chains having reacted only with the functionalizing agent and ...

CONTINUOUS SYNTHESIS METHOD FOR A MODIFIED DIENE ELASTOMER, FACILITY FOR IMPLENTING SAME

A continuous method for synthesizing a diene includes modifying the diene elastomer in a functionalizing device by: 2. The method for the continuous synthesis of a modified diene elastomer according to claim 1 , wherein K is greater than or equal to 10.3. The method according to claim 1 , wherein P is greater than 6.9.5. The method according to claim 4 , wherein X is a function capable of interacting with a reinforcing filler selected from cyclic or non-cyclic claim 4 , primary claim 4 , secondary or tertiary amines claim 4 , isocyanates claim 4 , imines claim 4 , cyano compounds claim 4 , thiols claim 4 , carboxylates claim 4 , epoxides and primary claim 4 , secondary or tertiary phosphines.6. The method according to claim 5 , wherein the function capable of interacting with a reinforcing filler is a secondary amine optionally protected by a trialkylsilyl group or a tertiary amine claim 5 , the nitrogen atom being substituted by C-Calkyl radicals claim 5 , preferably C-Calkyl radicals claim 5 , more preferably a methyl or ethyl radical claim 5 , or else a cyclic amine that forms a heterocycle containing a nitrogen atom and at least one carbon atom claim 5 , preferably 2 to 6 carbon atoms.7. The method according to claim 6 , wherein the functionalizing agent is selected from 3-(N claim 6 ,N-dimethylaminopropyl)trimethoxysilane claim 6 , 3-(N claim 6 ,N-dimethylaminopropyl)triethoxysilane claim 6 , 3-(N claim 6 ,N-diethylaminopropyl)trimethoxysilane claim 6 , 3-(N claim 6 ,N-diethylaminopropyl)-triethoxysilane claim 6 , 3-(N claim 6 ,N-dipropylaminopropyl)trimethoxysilane claim 6 , 3-(N claim 6 ,N-dipropyl-aminopropyl)triethoxysilane claim 6 , 3-(N claim 6 ,N-dibutylaminopropyl)trimethoxysilane claim 6 , 3-(N claim 6 ,N-dibutylaminopropyl)triethoxysilane claim 6 , 3-(N claim 6 ,N-dipentylaminopropyl)trimethoxysilane claim 6 , 3-(N claim 6 ,N-dipentylaminopropyl)triethoxysilane claim 6 , 3-(N claim 6 ,N-dihexylaminopropyl)-trimethoxysilane claim 6 , 3-(N claim 6 ,N- ...

MODIFIED DIENE ELASTOMER COMPRISING A DIENE ELASTOMER COUPLED BY AN AMINOALKOXYSILANE COMPOUND AND HAVING AN AMINE FUNCTION AT THE CHAIN END, AND RUBBER COMPOSITION COMPRISING SAME

The invention relates to a modified diene elastomer comprising predominantly the entity functionalized in the middle of the chain by an alkoxysilane group, optionally partially or completely hydrolysed to give silanol, bearing a tertiary amine functional group and the silicon atom of which bonds the two pieces of the chain, the chain ends of the modified diene elastomer being functionalized to at least 70 mol %, with respect to the number of moles of chain end, by an amine functional group. 1. A modified diene elastomer comprising predominantly an entity functionalized in the middle of the chain by an alkoxysilane group , optionally partially or completely hydrolysed to give silanol , bearing a tertiary amine functional group and the silicon atom of which bonds the two pieces of the chain , the chain ends of the modified diene elastomer being functionalized to at least 70 mol % , with respect to the number of moles of chain end , by an amine functional group.3. A modified diene elastomer according to claim 2 , wherein Rrepresents a hydrogen atom or a methyl or ethyl radical.4. A modified diene elastomer according to claim 2 , wherein Rrepresents a hydrogen atom.5. A modified diene elastomer according to claim 2 , wherein Rrepresents the saturated linear divalent Caliphatic hydrocarbon radical.6. A modified diene elastomer according to claim 2 , wherein Rand R claim 2 , which are identical or different claim 2 , represent a methyl or ethyl radical.7. A modified diene elastomer according to claim 1 , wherein the modified diene elastomer is a copolymer of butadiene and of a vinylaromatic monomer.8. A modified diene elastomer according to claim 1 , comprising at least 70% by weight claim 1 , with respect to the modified diene elastomer claim 1 , of the entity functionalized in the middle of the chain by the alkoxysilane group claim 1 , optionally partially or completely hydrolysed to give silanol claim 1 , bearing a tertiary amine functional group claim 1 , the silicon ...

COUPLED DIENE ELASTOMER HAVING A SILANOL FUNCTION IN THE MIDDLE OF THE CHAIN AND HAVING AN AMINE FUNCTION AT THE CHAIN END, AND RUBBER COMPOSITION COMPRISING SAME

The invention relates to a modified diene elastomer comprising predominantly the entity functionalized in the middle of the chain by a silanol group, the silicon atom of which bonds the two pieces of the chain, the chain ends of the modified diene elastomer being functionalized to at least 70 mol %, with respect to the number of moles of chain end, by an amine functional group. 1. A modified diene elastomer comprising predominantly the entity functionalized in the middle of the chain by a silanol group , the silicon atom of which bonds the two pieces of the chain , the chain ends of the modified diene elastomer being functionalized to at least 70 mol % , with respect to the number of moles of chain end , by an amine functional group.2. A modified diene elastomer according to claim 1 , comprising at least 70% by weight claim 1 , with respect to the modified diene elastomer claim 1 , of the entity functionalized in the middle of the chain by the silanol group claim 1 , the silicon atom of which bonds the two pieces of the chain claim 1 , the chain ends being functionalized to at least 70 mol % claim 1 , with respect to the number of moles of chain end claim 1 , by an amine functional group.3. A modified diene elastomer according to claim 1 , comprising from 80% to 100% by weight claim 1 , with respect to the modified diene elastomer claim 1 , of the entity functionalized in the middle of the chain by the silanol group claim 1 , the silicon atom of which bonds the two pieces of the chain claim 1 , the chain ends being functionalized to at least 70 mol % claim 1 , with respect to the number of moles of chain end claim 1 , by an amine functional group.4. A modified diene elastomer according to claim 3 , comprising an overall content of Si functional group T claim 3 , which is the ratio N/N claim 3 , in which Nrepresents the number of moles of silicon bonded to the coupled polymer claim 3 , determined by H nuclear magnetic resonance NMR and expressed in mmol/kg claim 3 , ...

SILYL GROUP-CONTAINING NOVEL COMPOUND, MODIFIED AND CONJUGATED DIENE-BASED POLYMER, AND METHOD FOR PREPARING SAME

The present invention relates to a modifier useful for modifying a polymer, a method for preparing a modified and conjugated diene-based polymer using the same, and a modified and conjugated diene-based polymer prepared thereby. In the modified and conjugated diene-based polymer, a hydroxyl group and a silyl group are combined, and the affinity thereof with a silica-based filler may be excellent. Accordingly, a rubber composition including the modified and conjugated diene-based polymer may have excellent processability, and as a result, molded articles (for example, tires) manufactured from the rubber composition may have excellent tensile strength, abrasion resistance, and viscoelasticity properties. 2. The compound of claim 1 , wherein in Formula 1 claim 1 ,{'sub': 1', '3', '1-10', '1-10', '1', '3', '1-10, 'Rto Rare each independently Calkyl, or Calkoxy, where at least one of Rto Ris Calkoxy, and'}{'sub': 4', '1-10, 'Ris Calkylene.'}3. The compound of claim 1 , wherein the compound is a modifier for a conjugated diene-based polymer.5. The modified and conjugated diene-based polymer of claim 4 , wherein in Formula 4 to Formula 6 claim 4 ,{'sub': 1', '2', '5', '10', '13', '1-10', '1-10, 'R, R, R, Rand Rare each independently Calkyl, or Calkoxy,'}{'sub': 4', '1-10, 'Ris Calkylene,'}{'sub': 7', '15', '1-10', '1-10', '1-10', '1-10', '1-10, 'Rand Rare each independently Calkyl; or Calkyl which is substituted or unsubstituted with Calkyl or alkylsilyl which is mono-, di- or tri-substituted with Calkyl, where the Calkyl comprises N or S,'}{'sub': '16', 'Ris N, and'}n and m are each independently an integer of 1 to 50.6. The modified and conjugated diene-based polymer of claim 4 , wherein the polymer comprises an aromatic vinyl-based monomer derived unit in an amount of 40 wt % or less.7. The modified and conjugated diene-based polymer of claim 4 , wherein the polymer has a number average molecular weight of 1 claim 4 ,000 g/mol to 5 claim 4 ,000 claim 4 ,000 g/mol.8. The ...

METHOD OF PRODUCTION OF CONJUGATED DIENE RUBBER

There is provided a method of production of a conjugated diene rubber comprising a first step of polymerizing a monomer containing a conjugated diene compound in an inert solvent using a polymerization initiator so as to obtain a conjugated diene polymer chain having an active end, a second step of reacting siloxane with the conjugated diene polymer chain having an active end, and a third step of reacting a compound represented by the following general formula (1) with the conjugated diene polymer chain with which siloxane was reacted obtained in the second step: 4. The method of production of a conjugated diene rubber according to claim 1 , wherein an organic alkali metal amide compound is used as the polymerization initiator.6. The method of production of a conjugated diene rubber according to claim 1 ,wherein the first step comprises:a step of polymerizing a monomer containing isoprene, or isoprene and an aromatic vinyl compound, in an inert solvent using a polymerization initiator so as to form a polymer block (A) having an active end and containing 80 to 100 wt % of an isoprene monomer unit and 0 to 20 wt % of an aromatic vinyl monomer unit, anda step of mixing the polymer block (A) having an active end and a monomer containing 1,3-butadiene, or 1,3-butadiene and an aromatic vinyl compound, to continue polymerization reaction, and forming a polymer block (B) having an active end and containing 50 to 100 wt % of a 1,3-butadiene monomer unit and 0 to 50 wt % of an aromatic vinyl monomer unit in series with the polymer block (A) so as to obtain a conjugated diene polymer chain having an active end and containing a polymer block (A) and a polymer block (B).7. The method of production of a conjugated diene rubber according to claim 6 , wherein a weight ratio of the polymer block (A) to the polymer block (B) in the conjugated diene polymer chain having an active end and containing a polymer block (A) and a polymer block (B) is 0.001 to 0.1 in terms of (weight of ...

HYDROGENATED BLOCK COPOLYMER AND LAMINATED GLASS

The present invention is a hydrogenated block copolymer [D] obtained by hydrogenating a block copolymer [C] that comprises two or more polymer blocks [A] and one or more polymer blocks [B], the block [A] comprising a monomer unit derived from an aromatic vinyl compound, and the block [B] comprising a monomer unit derived from a linear conjugated diene compound, the copolymer [D] having a low-temperature-side tan δ peak temperature of −20 to 20° C. and a high-temperature-side tan δ peak temperature of 100° C. or more with respect to dynamic viscoelastic properties, the copolymer [D] being obtained by hydrogenating 90% or more of all unsaturated C—C bonds of the copolymer [C] that is characterized in that a ratio (wA:wB) of a total weight fraction wA of the block [A] in the copolymer [C] to a total weight fraction wB of the block [B] in the copolymer [C] is 15:85 to 40:60, and a ratio of structural units derived from 1,2-addition and 3,4-addition polymerization with respect to a total amount of structural units derived from the linear conjugated diene compound included in the block [B] is 40 wt % or more, and the copolymer [D] having Mw 40,000 to 200,000. 1. A hydrogenated block copolymer [D] obtained by hydrogenating a block copolymer [C] that comprises two or more polymer blocks [A] and one or more polymer blocks [B] , the polymer block [A] comprising a monomer unit derived from an aromatic vinyl compound as a main component , and the polymer block [B] comprising a monomer unit derived from a linear conjugated diene compound as a main component , the hydrogenated block copolymer [D] having a low-temperature-side tan δ peak temperature of −20 to 20° C. and a high-temperature-side tan δ peak temperature of 100° C. or more with respect to dynamic viscoelastic properties ,the hydrogenated block copolymer [D] being obtained by hydrogenating 90% or more of unsaturated carbon-carbon bonds included in a main chain, a side chain, and an aromatic ring of the block copolymer [ ...

RUBBER BLEND, SULFUR-CROSSLINKABLE RUBBER MIXTURE, AND VEHICLE TIRE

The invention relates to a sulfur-crosslinkable rubber mixture comprising 114.-. (canceled)16. The rubber blend as claimed in claim 15 , wherein at least the solution-polymerized polymer B of low molecular weight has been functionalized.17. The rubber blend as claimed in claim 16 , wherein the solution-polymerized diene polymer A of high molecular weight has been functionalized.18. The rubber blend as claimed in claim 15 , wherein at least one of polymer A and polymer B has been functionalized at the chain end with an amino group-containing alkoxysilyl group and at least one further amino group and/or at least one further alkoxysilyl group and/or at least one further amino group-containing alkoxysilyl group claim 15 , wherein the amino groups are bonded to the chain end of the polymer chain with or without spacers.19. The rubber blend as claimed in claim 15 , wherein at least one of the polymers A and B has been functionalized at the chain end and/or along the polymer chain and/or at a coupling site with a silane sulfide group.20. The rubber blend as claimed in claim 15 , wherein at least one of the polymers A and B has been functionalized at the chain end and/or along the polymer chain and/or at a coupling site with a siloxane group.21. The rubber blend as claimed in claim 15 , wherein at least one of the polymers A and B has coupling sites.22. The rubber blend as claimed in comprising 5 to 100 phr of the at least one solution-polymerized polymer B of low molecular weight claim 15 , based on the at least one solution-polymerized diene polymer A of high molecular weight.23. The rubber blend as claimed in having a Mooney viscosity (ML1+4 claim 15 , 100° C. according to ASTM-D 1646) of 40 to 100 Mooney units.24. The rubber blend as claimed in claim 15 , wherein the proportion of the diene polymer A of the rubber blend in the rubber mixture is at least 50 phr based on the total amount of solid rubbers present in the rubber mixture.25. The rubber blend as claimed in ...

Modification Initiator And Modified Conjugated Diene-based Polymer Including The Same

The present invention relates to a modification initiator and a modified conjugated diene-based polymer including the same, and more particularly, the present invention provides a modification initiator including a compound represented by Formula 1, a modified conjugated diene-based polymer including the same, and a method of preparing a modified conjugated diene-based polymer. 2. The method of claim 1 , wherein the compound represented by Formula 1 is used in an amount of 0.01 mmol to 10 mmol based on total 100 g of the monomer.3. The method of claim 1 , further comprising a step (S2) of reacting the active polymer prepared in the step (S1) with a modifier.5. The method of claim 3 , wherein a molar ratio of the compound represented by Formula 1 to the modifier is in a range of 1:0.1 to 1:10.6. The method of claim 1 , wherein the polymerization of the step (S1) is performed by including a polar additive.7. The method of claim 6 , wherein the polar additive comprises at least one selected from the group consisting of tetrahydrofuran claim 6 , ditetrahydrofurylpropane claim 6 , diethylether claim 6 , cycloamylether claim 6 , dipropyl ether claim 6 , ethylene dimethyl ether claim 6 , diethyl glycol claim 6 , dimethyl ether claim 6 , tertiary butoxyethoxyethane claim 6 , bis(3-dimethylaminoethyl)ether claim 6 , (dimethylaminoethyl)ethylether claim 6 , trimethylamine claim 6 , triethylamine claim 6 , tripropylamine claim 6 , and tetramethylethylenediamine.8. The method of claim 1 , whereinin Formula 1,{'sup': 1', '2', '15', '2', '15', '1', '2', '1', '15, 'Yand Yare each independently M or R, wherein Yis Rwhen Yis M, and Yis M when Yis R,'}M is an alkali metal,{'sup': 1', '2', '3', '15, 'R, R, R, and Rare each independently hydrogen; an alkyl group having 1 to 30 carbon atoms; an alkenyl group having 2 to 30 carbon atoms; and an alkynyl group having 2 to 30 carbon atoms,'}{'sup': '4', 'Ris a single bond; or an unsubstituted alkylene group having 1 to 20 carbon atoms,'}{' ...

End-functional conjugated diene-based polymer and manufacturing method therefor

Disclosed are an end-functionalized conjugated diene-based polymer represented by Chemical Formula 1 and a method of preparing the same.

Methods of Making Mechanoresponsive Healing Polymers

Methods are provided to produce new mechanoresponsive healing systems. Additionally, various embodiments provide a two tier self-healing material system concept that provides a non-intrusive method to mitigate impact damage in a structure ranging from low velocity impact damage (e.g., crack damage) to high velocity impact damage (e.g., ballistic damage.) The various embodiments provide the mechanophore linked polymer PBG-BCB-PBG. The various embodiments provide methods for synthesizing PBG-BCB-PBG. 1. A method of making a self-healing mechanophore linked PBG-BCB-PBG polymer , comprising:combining acrylonitirle with methacrylate to form poly(methacrylate-co-acrylonitrile);end-capping the poly(methacrylate-co-acrylonitrile) with bromobenzocyclobutene to form end-capped poly(methacrylate-co-acrylonitrile);combining acrylonitirle with butadiene to form poly(butadiene-co-acrylonitrile); andblock grafting the poly(butadiene-co-acrylonitrile) to the end-capped poly(methacrylate-co-acrylonitrile) to from the PBG-BCB-PBG polymer.2. The method of claim 1 , wherein:the poly(methacrylate-co-acrylonitrile) comprises 75 wt/wt % acrylonitrile and 25 wt/wt % methacrylate;the poly(butadiene-co-acrylonitrile) comprises 70 wt/wt % butadiene and 30 wt/wt % acrylonitrile; andblock grafting the poly(butadiene-co-acrylonitrile) to the end-capped poly(methacrylate-co-acrylonitrile) to form the PBG-BCB-PBG polymer in the ratio of 13 poly(methacrylate-co-acrylonitrile) to 1 poly(butadiene-co-acrylonitrile).3. A method of making a self-healing mechanophore linked PBG-BCB-PBG polymer claim 1 , comprising:epoxidizing an alkene bond on a grafted poly(butadiene-co-acrylonitrile) on a PBG polymer backbone;ring opening the resulting epoxide by chlorosilanes; andperforming living anionic polymerization with the PBG functionalized with chlorosilane groups and coupling it with living anions of poly(butadiene) and end-capping it with bromocyclobutene to form the PBG-BCB-PBG polymer.4. The method of ...