ГИГИЕНИЧЕСКАЯ ПРОКЛАДКА, СОДЕРЖАЩАЯ КЛЕЙ, СОПРИКАСАЮЩИЙСЯ С ТЕЛОМ

Гигиеническая прокладка, имеющая клей на соприкасающейся с телом стороне, содержит поглощающую внутреннюю часть, имеющую по крайней мере одну главную поверхность, соприкасающуюся с телом пользователя, и клей, эффективный при кратковременном прижатии, закрепленный на соприкасающейся с телом поверхности. В одном из аспектов это изделие ограничено по размерам и содержит термоплавкий клей, который прижимают к области наружных половых органов потребителя и который характеризуется температурой размягчения Tg среднего блока менее чем -10oС, G (модулем упругости) менее 15•104 дин/см2 при 10 рад/с (25oС), G (модуль потерь) от 1 до 6•104 дин/см2, прочностью на разрыв более 10 фунт/дюйм2 и не требует никакой последующей операции отверждения после охлаждения. В одном из аспектов данное изделие содержит клей, который прижимают к области наружных половых органов потребителя и который имеет массу менее 1500 мг/дюйм2 и тангенс дельта, находящийся внутри четырехугольника АВСD, где упомянутый четырехугольник ...

ТЕРМОПЛАВКОЕ КЛЕЯЩЕЕ СРЕДСТВО

Настоящее изобретение относится к термоплавкому клеящему средству, состоящему из термопластичного блок-сополимера (А), который представляет собой сополимер ароматических углеводородов винильного типа и сопряженных диеновых соединений, в котором термопластичный блок-сополимер (А) включает стирольный блок-сополимер радиального типа с содержанием стирола от 35 до 45 масс.% и содержанием диблока от 50 до 90 масс.%, и имеющий вязкость при 25°С в 25%-ном (по массе) растворе в толуоле от 100 до 250 мПа⋅с (А1). Также описано изделие разового пользования, полученное с использованием указанного выше термоплавкого клеящего средства. Технический результат – получение термоплавкого клеящего средства, обладающего превосходной адгезионной способностью при низкой температуре. 2 н. и 2 з.п. ф-лы, 6 табл., 7 пр.

ТЕРМОПЛАВКИЙ ПРИКЛЕИВАЮЩИЙСЯ ПРИ НАЖАТИИ КЛЕЕВОЙ СОСТАВ (HMPSA) ДЛЯ ОТСОЕДИНЯЕМОЙ САМОКЛЕЯЩЕЙСЯ ЭТИКЕТКИ

Изобретение относится к термоплавкому приклеивающемуся при нажатии клеевому (HMPSA) составу, используемому для самоклеющихся этикеток. Термоплавкий приклеивающийся при нажатии клеевой (HMPSA) состав включает стирольный блок-сополимер, совместимую повышающую клейкость смолу, а также одну или несколько карбоновых кислот, углеводородная цепь которых содержит от 6 до 54 атомов углерода. Температура размягчения повышающей клейкость смолы находится в диапазоне от 80 до 150°С, а кислотное число ее менее 20. Многослойная система, включающая в себя слой HMPSA-состава, содержит пригодный к печатанию слой-основу и прилегающий защитный слой. Самоклеящуюся этикетку получают преобразованием многослойной системы. Изделие, покрытое самоклеящейся этикеткой, представляет собой упаковочную тару, контейнер из стекла или пластика, предпочтительно стеклянная бутылку. Утилизацию изделия с наклеенной этикеткой осуществляют отсоединением вышеупомянутой этикетки при погружении изделия в горячий водный щелочной раствор ...

ТЕРМОПЛАВКОЕ СВЯЗУЮЩЕЕ ВЕЩЕСТВО

Изобретение относится к термоплавкому связующему веществу, используемому в производстве изделий одноразового использования, типичные примеры которых представляют собой бумажные подгузники и салфетки. Термоплавкое связующее вещество, предназначенное для использования в переработке бумаги, переплетном деле или изделиях одноразового применения, содержит термопластический блочный сополимер (A), который представляет собой сополимер ароматических углеводородов на основе винила и сопряженных диеновых соединений, причем данный термопластический блочный сополимер (A) содержит следующие компонент (A1) и компонент (A2):(A1) стирольный блочный сополимер радиального типа, у которого содержание стирола составляет от 35 до 45 мас.%, содержание диблочного сополимера составляет от 50 до 90 мас.%, и вязкость при 25°C раствора 25 мас.% в толуоле составляет не более чем 250 мПа⋅с; и (A2) стирольный блочный сополимер линейного типа, у которого содержание стирола составляет от 40 до 50 мас.%, и вязкость при ...

МУЛЬТИБЛОЧНЫЕ ГИДРОГЕНИЗОВАННЫЕ ПОЛИМЕРЫ ДЛЯ КЛЕЕВ

Описывается клеевая композиция, включающая: (а) мультиблочный сополимер формулы D-A-(B-A)n-Dx и/или (D-A-B)q - Y, где A - винилароматический углеводородный полимерный блок с мол. м. 4000 - 35000; B - гидрогенизованный сопряженный диеновый полимерный блок с мол. м. 20000 - 200000; D - гидрогенизованный сопряженный диеновый полимерный блок с мол. м. 500 - 50000, n - 1 - 5 - целое число, x = 0 или 1; q = 2 - 30; Y - мультиблочный агент сочетания, соотношение молекулярной массы D и молекулярной массы B варьируется так, что показатель нормализованной молекулярной массы находится в интервале 0 - 18 • 10-6, где показатель нормализованной молекулярной массы определяется формулой (MWD /MWB)/вес. доля S • общий MW • вес для полимера в композиции, где MWD и MWB - молекулярные массы блоков D и B соответственно; вес. доля S - весовая доля винилароматического углеводорода в полимере; общий MW - общая молекулярная масса полимера и вес. доля полимера в композиции; содержание винилароматический углеводородных ...

АДГЕЗИОННЫЙ СОСТАВ, ЗАМЕЩЕННЫЙ ФУНКЦИОНАЛЬНЫМИ ГРУППАМИ, ЗВЕЗДООБРАЗНЫЙ СТИРОЛ-ИЗОПРЕНОВЫЙ БЛОК-СОПОЛИМЕР, СПОСОБ ЕГО ПОЛУЧЕНИЯ

Описывается новый адгезионный состав на основе замещенных функциональными группами звездообразных стирол-изопреновых блок-сополимеров, отличающийся тем, что содержит: (а) от 20 до 50 вес.% замещенного функциональными группами трехлучевого звездообразного блок-сополимера общей формулы I (S-I)3Si(OR)nOH, где каждый из лучей (S-I) является стирол-изопреновым блок-сополимером, в котором S является полистирольным блоком; I является полиизопреновым блоком; R является остатком агента сочетания, соответствующим алкиленовой или оксиалкиленовой группе, имею-шей от 2 до 10 атомов углерода; n равно 0 или 1; (b) от 30 до 70 вес.% по крайне мере одной смолы, придающей липкость; (с) от 1 до 30 вес.% по крайней мepe одного пластифицирующего масла. Технический результат - получение доступных составов, проявляющих все желаемые реологические и адгезивные характеристики, в частности, при применениях на полярных поверхностях, которые при этом сохраняют удовлетворительный уровень сцепления. 3 с. и 16 з.п. ф-лы ...

ВСТРЕЧНО СУЖАЮЩИЕСЯ ТЕРМОПЛАСТИЧНЫЕ ЭЛАСТОМЕРЫ

Композиция встречно сужающихся термопластичных эластомеров, содержащая: (а) встречно сужающийся диблочный сополимер А-[А/В] с пиковой молекулярной массой от 20000 до 250000, который включает моновинилароматический гомополимерный блок А с пиковой молекулярной массой по меньшей мере 8000 и встречно сужающийся сополимерный блок [А/В] с содержанием винила по меньшей мере 15 мас. % в расчете на количество звеньев сопряженного диена в диблочном сополимере; и (b) блок-сополимер, выбранный из группы, состоящей из линейных триблок-сополимеров, имеющих пиковую молекулярную массу, которая по меньшей мере примерно в 1,5 раза больше пиковой молекулярной массы встречно сужающегося диблочного сополимера А-[А/В], описанного в (а), многолучевых связанных блок-сополимеров, имеющих пиковую молекулярную массу, которая по меньшей мере примерно в 2,5 раза больше пиковой молекулярной массы встречно сужающегося диблочного сополимера А-[А/В], описанного в (а), и их смесей; и (с) причем отношение (а) к (b) в композиции ...

КОМПОЗИЦИЯ ТЕРМОПЛАВКОГО КЛЕЯ И СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ

Группа изобретений относится к области полимерных клеевых составов, а именно к композиции термоплавкого клея и способу ее приготовления. Более конкретно, композиция термоплавкого клея включает: двухблочный сополимер, содержащий звено мономера на основе стирола и звено мономера на основе сопряженного диена, которое в свою очередь включает звено изопрена и звено эпоксидированного изопрена и описывается следующей химической формулой ; трехблочный сополимер, который получен при проведении реакции сочетания для указанного двухблочного сополимера; и сшитый блок-сополимер, полученный сшиванием двух и более указанных двухблочных сополимеров и трехблочных сополимеров, при этом сшиватель представляет собой по меньшей мере один из полиалкиленгликоля и этиленгликоля. Группа изобретений обеспечивает улучшение адгезионной прочности и высокотемпературной стойкости, а также сохранение вязкости при высокой температуре. 2 н. и 11 з.п. ф-лы, 3 табл., 15 пр.

АДГЕЗИВНАЯ КОМПОЗИЦИЯ

... 1. Адгезивная композиция, содержащая: гидрофобный полимер; высокоэластичный пластификатор; повышающую клейкость смолу; гидрофильный полимер; дополнительный полимер, способный к образованию водородных связей с гидрофильным полимером; и частицы глины. 2. Композиция по п.1, в которой гидрофобный полимер выбирают из полиизобутиленов, бутилкаучуков, адгезивов на основе натурального каучука, полимеров простого винилового эфира, полисилоксанов, полиизопренов, стирол-изопрен-стирольных блок-сополимеров, стирол-бутадиен-стирольных блок-сополимеров, изобутилен-изопреновых сополимеров, бутадиен-акрилонитрильного каучука, полихлоропренов, этилен-пропилен-диеновых терсополимеров, акрилатов и их комбинаций. 3. Композиция по п.2, в которой гидрофобный полимер выбирают из полиизопренов, бутилкаучука, стирол-изопрен-стирольных блок-сополимеров и стирол-бутадиен-стирольных блок-сополимеров. 4. Композиция по п.1, в которой высокоэластичный пластификатор выбирают из пластификаторов на основе стирола, полиизобутиленов ...

НИЗКОТЕМПЕРАТУРНЫЕ КЛЕИ-РАСПЛАВЫ ДЛЯ ИЗДЕЛИЙ ОДНОРАЗОВОГО ИСПОЛЬЗОВАНИЯ С ВЫСОКИМ СОПРОТИВЛЕНИЕМ ПОЛЗУЧЕСТИ

... 1. Клей-расплав низкотемпературного применения, включающий:(a) по меньшей мере, один блок-сополимер стирола с индексом текучести расплава, больше чем 33, измеренный в соответствии со стандартом ASTM D 1238, и содержанием стирола больше чем 40%;(b) воск, при котором клей имеет вязкость приблизительно менее чем 8500 сантипуаз при 120°C.2. Клей-расплав низкотемпературного применения по п. 1, включающий:(a) от 5 до 20 мас.% блок-сополимера стирола;(b) от 0,5 до 5% мас.% воска;(c) 30-70 мас.% вещества, повышающего клейкость; и(d) 0,1-2 мас.% антиоксиданта.3. Клей-расплав низкотемпературного применения по п. 1, в котором клей имеет кроссовер температуру больше 60°C.4. Клей-расплав низкотемпературного применения по п. 3, у которого кроссовер температура, измеренная как точка, где tgd=1, составляет больше чем 65°C.5. Клей-расплав низкотемпературного применения по п. 1, у которого предел текучести составляет больше чем 50 пси.6. Клей-расплав низкотемпературного применения по п. 5, у которого предел ...

КЛЕЕВЫЕ КОМПОЗИЦИИ, СОДЕРЖАЩИЕ СМЕСИ БЛОКСОПОЛИМЕРОВ

... 1. Клеевая композиция, содержащая: ! i. по меньшей мере, один блоксополимер (i)(a) формулы A-I-A (1) или (A-I)nX (2) и по меньшей мере один блоксполимер (i)(b) формулы А-(I/В)-А (3) или [A-(I/B)]n-X (4), где каждый А независимо представляет собой полимерный блок ароматического винильного соединения, I означает полиизопреновый полимерный блок, каждый (I/B) представляет собой смешанный блок неупорядоченного полимера изопрена и бутадиена с массовым отношением I:В от 20:80 до 80:20, n - целое число, большее или равное 2, а Х означает остаток сшивающего агента, и где массовое соотношение между указанными блоксополимерами (i)(a) и (i)(b) такое, что общее содержание бутадиена в компоненте (i) составляет менее 20 мас.%, ! ii. повышающую клейкость смолу, выбранную из модифицированных алифатических С5-углеводородных смол, где указанные С5-углеводородные смолы не являются ароматическими модифицированными смолами, и ! iii. необязательно один или более чем один пластификатор. ! 2. Клеевая композиция ...

ТЕРМОПЛАВКОЕ КЛЕЯЩЕЕ ВЕЩЕСТВО

Клей

STERNFOERMIG AUFGEBAUTE BLOCKCOPOLYMERE, SCHMELZKLEBEMASSE UND DARAUS HERGESTELLTE GEGENSTAENDE

HEISSSCHMELZBARE KLEBSTOFFZUSAMMENSETZUNG FUER DIE BINDEREI.

DRUCKEMPFINDLICHES KLEBEMITTEL UND KLEBEVERSCHLUSS FÜR WEGWERFWINDELN

DRUCKEMPFINDLICHES KLEBEMITTEL UND KLEBEVERSCHLUSS FÜR WEGWERFWINDELN

ZUSAMMENSETZUNG FÜR ABZIEHBARE KLEBSSTOFFE, BESCHICHTUNGEN UND HOCHLEISTUNGSKLEBSTOFFE

KLEBSTOFF SOWIE DARAUF BASIERENDE BÄNDER UND ETIKETTEN

Wiederablösbarer Haftklebestreifen

Haftklebfolienstreifen, der sich durch dehnendes Verstrecken im Wesentlichen in der Verklebungsebene rückstands- und zerstörungsfrei wieder ablösen lässt, bestehend aus• einem einschichtigen Träger aus einem Polyurethan, wobei der Träger eine Reißdehnung von mindestens 100 % und ein Rückstellvermögen von über 55 % aufweist, wobei• auf den Träger beidseitig jeweils eine Klebemassenschicht aus einer Klebmasse aufgebracht ist, die auf Basis von Vinylaromatenblockcopolymeren und Klebharzen aufgebaut ist, wobei zu mindestens 75 % (bezogen auf den Gesamtharzanteil) ein Harz gewählt wird mit einem DACP (diacetone alcohol cloud point) von größer -20 °C, bevorzugt größer 0 °C.

Haftklebemasse, diese enthaltende Selbstklebeprodukte und Verbunde

Die Erfindung betrifft eine Blockcopolymerhaltige Haftklebemasse enthaltend e) 52 Gew.-% bis 65 Gew.-%, bevorzugt 55 Gew.-% bis 62 Gew.-% einer Elastomerkomponente, f) 30 Gew.-% bis 45 Gew.-%, bevorzugt 35 Gew.-% bis 42 Gew.-% zumindest eines Klebharzes, g) 0 Gew.-% bis 15 Gew.-%, bevorzugt bis 10 Gew.-% zumindest eines Weichharze und h) 0 Gew.-% bis 18 Gew.-%, bevorzugt bis 10 Gew.-% an weiteren Additiven, wobei die Elastomerkomponente (a) zu mindestens 90 Gew.-% aus Polyvinylaromat-Polybutadien-Blockcopolymeren besteht, wobei die Polyvinylaromat-Polybutadien-Blockcopolymeren zumindest eine Sorte eines Diblockcopolymers (a1) und zumindest eine Sorte eines Tri- oder Multiblockcopolymers (a2) umfassen, das zumindest eine Diblockcopolymer (a1) einen Vinylaromatenanteil von 15 Gew.-% bis 45 Gew.-% aufweist, innerhalb der Elastomerkomponente (a) der Anteil an Tri- oder Multiblockcopolymer (a2) zwischen 25 Gew.-% und 50 Gew.-%, bevorzugt zwischen 30 Gew.-% und 45 Gew.-% beträgt, das Tri- oder ...

Adhesive film for structural bonding, e.g. in vehicle production, comprises non-woven fabric base coated on both sides with adhesive paste containing styrene block copolymer, epoxide, hardener and accelerator

Adhesive film for structural bonding consists of a non-woven fabric base coated and impregnated on both sides with an adhesive paste comprising a mixture of styrene block copolymer (A), epoxide (B), hardener (C) and accelerator (D).

GEGENUEBER VERUNREINIGUNGEN WIDERSTANDSFAEHIGER DRUCKEMPFINDLICHER KLEBESTREIFEN

SIEGELFAEHIGE THERMOPLASTISCHE FORMMASSE

Verfahren zur Kapselung einer elektronischen Anordnung

Die vorliegende Erfindung betrifft ein Verfahren zur Kapselung einer elektronischen Anordnung gegen Permeanten, bei dem eine Haftklebemasse auf Basis von Butylenblockcopolymeren, insbesondere Isobutylenblockcopolymeren, bereitgestellt wird und bei dem die Haftklebemasse auf und/oder um die zu kapselnden Bereiche der elektronischen Anordnung appliziert wird.

IMPROVEMENTS IN OR RELATING TO MANUFACTURE OF PERFECT BOUND BOOKS

... 1,219,394. Bookbinding &c. NATIONAL STARCH & CHEMICAL CORP. 14 March, 1969 [25 April, 1968], No. 13701/69. Heading B6A. [Also in Divisions C3, C4 and C5] In a method of bookbinding a spine is produced by roughening the backs of divers sheets made of paper, metal foil clad paper and plastics material and applying a hot melt composed of a random block polymer, a tackifier resin and a stabilizer for the polymer.

Adhesive compositions and tapes comprising same

An adhesive composition comprising at least one natural or synthetic elastomer at least one styrene ethylene- butylene styrene block copolymer, at least one heat reactive alkyl phenolic resin having a hydroxymethyl reactive group, and at least one phenolic antioxidant and tapes utilizing the adhesive compositions are disclosed. A tape utilizing the adhesive composition of the present invention particularly suitable for use in closure systems associated with air ducts and air connectors is disclosed. A composition comprising at least one heat reactive alkyl phenolic resin having a hydroxymethyl reactive group and at least one phenolic antioxidant particularly suitable for use as an antioxidant in adhesive compositions is disclosed.

PRIMER FOR USE ON EPDM ROOFING MATERIALS

ADHESIVE SKIN BARRIER

MULTIPURPOSE ADHESIVE

Improvements in or relating to Adhesives, Metal Primers and Protective Coatings

... 1,181,807. Coated metal surfaces. DUNLOP CO. Ltd. 16 Oct., 1967 [18 Oct., 1966], No. 46637/66. Heading B2K. [Also in Division C3] A metal primer comprises 100 parts by weight of a thermoplastic block copolymer of formula A-(B-A) n in which A represents a non-elastomeric polymer block, B represents an elastomeric polymer block and n is an integer of 1 to 10 and 10 to 1,000 parts by weight of a chlorinated natural rubber. In the example, a thin metal strip is coated with a primer comprising a polystyrene-polybutadiene-polystyrene block copolymer, chlorinated rubber and toluene.

STYREN BUTADIENE STYREN BLOCK COPOLYMER ON BASIS OF DETENTION COMPOSITIONS WITH INCREASED LIGHT OXIDATION RESISTANCE

ADHESIVE COMPOSITION AND ELEMENT FOR GLUING ON HUMAN SKIN

ADHESIVE MASS

BY A CHLORSULFONIERTES POLYMER ACRYLATE /METHACRYLATKLEBSTOFFE ONE INITIATED

COMPOSITION, WHICH WHEN ADHESIVE USES CAN, AND USE OF A SUCH COMPOSITION

MULTI-FUNCTIONAL FUSION BONDING EMULSION

HIGH-MELTING ADHESIVE MIXTURE AND PROCEDURE FOR ITS PRODUCTION

VERFAHREN ZUR HERSTELLUNG EINES KLEBERS AUF DER BASIS EINES THERMOPLASTISCHEN ELASTOMEREN BLOCKMISCHPOLYMERISATS

ADHESIVE COMPOSITIONS.

PRESSURE-SENSITIVE ADHESIVES ON THE BASIS OF PREFERABLY STICKY-MADE NICHTMISCHBAREN ELASTOMERS

ELASTOMERS PRESSURE-SENSITIVE ONE ADHESIVE COMPOSITIONS WITH GOOD CUT BEHAVIOR

POLYSTYRENE POLYISOPRENE POLYSTYRENE OF BLOCK COPOLYMERS, FUSIONSTICKING COMPOSITIONS AND FROM IT MANUFACTURED ARTICLES.

HYDROGENATED RESINS, FORMULATIONS OF ADHESIVE AND PROCEDURE FOR THE PRODUCTION OF RESINS

FUSION ADHESIVE COMPOSITION FOR LABELS

FUNKTIONALISIERTE RADIAL STYRENE ISOPREN OF COPOLYMERS

REPOSITION-CASH ADHESIVE LABEL FOR OPTICAL RECORDING MEDIA

INTERLACE-CASH FILM EDUCATION PREPARATIONS

ADHESIVE COMPOSITION, PROCEDURE AND EQUIPMENT FOR ITS PRODUCTION AND ABSORBING ARTICLES THIS ADHESIVE COMPOSITION CONTAINING

VINYLAROMAT BLOCKCOPOLYMERE ONE AND THE SAME CONTAINING COMPOSITIONS

PRESSURE-SENSITIVE ADHESIVE COMPOSITION

PRODUCTION OF A MULTI-LAYER ONE, TEXTILEN OF FLOOR MAT USING AN AQUEOUS POLYMER DISPERSION AS ADHESIVE

SOLVABLE ADHESIVES FOR CONNECTING SUBSTRATES

Adhesive for application of functional articles to the skin and comfortable removal of such articles

Adhesive compositions and constructions with outstanding cutting performance

POLYESTER TEREPHTHALATE BOTTLE ASSEMBLY

Lipophilic adhesive for secure topical attachment to the skin and comfortable removal

Hot melt adhesive compositions

High shear pressure sensitive adhesive composition

A hot melt pressure sensitive adhesive composition includes ABA block copolymer(s), a midblock resin, a plasticizer, and optionally, an endblock resin. The A block is derived from styrene and B block is derived from butadiene or its hydrogenated version. The block copolymer(s) has an average styrene content of from about 15% to about 35%, an average diblock content of no less than about 20%, and an average solution viscosity of less than about 1,000 cps.

Elastic methacrylate compositions

A two-part adhesive composition exhibiting improved elasticity wherein its composition includes one or more acrylate or methacrylate ester monomers, a sulfur bearing compound, preferably a sulfonyl chloride, an amine promoter, preferably, an amine aldehyde reaction product, and a thermoplastic block copolymer component selected from the group consisting of a. a linear styrene-butadiene-styrene copolymer b. a radial styrene-butadiene-styrene block copolymer with a plasticizer, c. a linear or radial styrene-isoprene-styrene block copolymer, and d. a linear or radial styrene-butadiene-isoprene- styrene block copolymer, and mixtures thereof.

HMPSA for removable self-adhesive label

Acrylate/methacrylate adhesives initiated by chlorosulfonated polymer

An absorbent article having a skin contactable hot melt pressure sensitive adhesive

ARTICLES PREPARED FROM HYDROGENATED CONTROLLED DISTRIBUTION BLOCK COPOLYMERS

GELS FROM CONTROLLED DISTRIBUTION BLOCK COPOLYMERS

Sanitary napkin having body-facing adhesive

Cured thermoplastic high tack pressure sensitive adhesive

Hot-melt-coatable adhesives

Frontal tape-based diaper closure system

MIXED BLOCK POLYMER ADHESIVE

BLOCK COPOLYMER COMPOSITION

RECLOSABLE MECHANICAL FASTENER BASED ON A COMPOSITE ARTICLE

Oil-tolerant reinforcement strip

DIAPER CLOSURE SYSTEM PRESSURE-SENSITIVE ADHESIVE COMPOSITION, TAPE AND

Compositions of styrenic block copolymer resin and polyphenylene ether resin

Absorbent hot melt adhesive

PRESSURE SENSITIVE ADHESIVES CONTAINING BLOCK COPOLYMER

Adhesive formulations

HOT MELT ADHESIVE COMPOSITION AND TAPE

PRESSURE-SENSITIVE ADHESIVE COMPOSITIONS AND CONSTRUCTIONS

The present invention is directed to pressure-sensitive adhesive compositions and pressure-sensitive adhesive constructions fabricated using the pressure- sensitive adhesive compositions. The pressure-sensitive adhesive compositions comprise about 10 to about 40% of a styrene-isoprene block copolymer, about 5 to about 30% of a styrene-butadiene block copolymer, about 30 to about 65% of an aromatically modified tackifying resin, about 8 to about 30% of a plasticizing oil and optionally about 0.2 to about 2% of an antioxidant, wherein the percentages are based on the total weight of the composition.

ADHESIVE COMPOSITION FOR REMOVABLE PRESSURE SENSITIVE ADHESIVE LABEL

Composition adhésive thermofusible sensible à la pression (HMPSA) compren ant : a) de 25 à 50 % d'un mélange de copolymères blocs styréniques de type SBS et SB; b) de 45 à 75 % de résines tackifiantes compatibles ayant une tem pérature de ramollissement comprise entre 80 et 150 °C; c) de 0,5 à 5,5 % d 'acides gras dont la chaîne hydrocarbonée comprend de 10 à 22 atomes de carb one. Système multicouche comprenant une couche d'HMPSA, une couche support i mprimable et une couche protectrice adjacente. Etiquette auto-adhésive corre spondante et procédé de recyclage d'un article étiqueté avec décollement de ladite étiquette par immersion de l'article dans une solution aqueuse basiqu e à chaud.

PRESSURE-SENSITIVE HOT-MELT ADHESIVES ADHERING TO FLEXIBLE SUBSTRATES

A description is given of a pressure-sensitive hot-melt adhesive which fe atures good low-temperature adhesion. The adhesive is used to bond film subs trates to one another or to cardboard packaging. The adhesive is to contain 2% to 50% of styrene block copolymers, 1% to 30% of EVA polymers, and also 2 0% to 70% of tackifying resins and 5% to 40% of plasticizer. Suitability is possessed more particularly by mixtures with SIBS polymer.

CAUSTIC REMOVABLE HOT MELT ADHESIVE FORMULATIONS

The invention relates firstly to a hot melt adhesive additive, particularly comprising a low molecular weight styrene-maleic anhydride (SMA) and a low molecular weight maleated polybutadiene imparting caustic removability to a conventional hot melt adhesive composition comprising the said additive. It relates also to a caustic removable hot melt adhesive composition comprising said adhesive additive and further comprising an adhesive resin of the group consisting of styrene-isoprene-styrene block copolymers, tackifying resins, polyacrylate resins, poly ethylene vinyl acetate resins, polystyrene butadiene resins, styrene-butadiene-styrene block copolymers, and process oil, or mixtures thereof. It covers also a caustic removable hot melt adhesive label which comprises said caustic removable hot melt adhesive composition.

ADHESIVE STRAPPING TAPE

The invention relates to an adhesive tape comprising a film carrier onto which an adhesive mass is applied on at least one side thereof, the adhesive mass consisting of at least one block copolymer P1 comprising one or more terminal blocks consisting of vinyl aromatics and at least one block consisting of conjugated dienes, wherein the terminal double bonds, obtained by linkage in the 1,2 position, are hydrated to more than 80%, while the double bonds in the main chain, obtained by linkage in the 1,4 position, are hydrated to less than 30%, and at least one block copolymer P2 comprising one ore more terminal blocks consisting of vinyl aromatics and at least one block consisting of conjugated dienes, wherein at least 95% of the double bonds are hydrated.

PRESSURE SENSITIVE ADHESIVES CONTAINING BLOCK COPOLYMER

A pressure sensitive adhesive composition is provided. The adhesive comprises an ABA block copolymer wherein the A block is a copolymer of styrene and alpha-methylstyrene and the B block is a diene polymer. The diene polymer can be butadiene, isoprene or a copolymer thereof. The composition also contains a tackifying resin.

DISPOSABLE ARTICLE CONSTRUCTIONS

A hot melt pressure sensitive adhesive composition comprises 1535% of an A-B-A block or multiblock A-B-A-B-A-B copolymer, 45-70% of a compatible tackifying resin, 5-30% of a plasticizing oil, 0-5% of a petroleum derived wax, and 0.1-2% of a stabilizer. Polymer blocks A are non-elastomeric blocks which as homopolymers have glass transition temperatures above 20.degree.C; polymer block B is butadiene or hydrogenated butadiene. They are used in disposable articles such as diapers to bond the polyethylene or polypropylene substrates of multi-line type construction to the tissue, non-woven polyethylene or polypropylene substrates.

PET BOTTLE ASSEMBLIES

PET BOTTLE ASSEMBLIES PET bottle assemblies are prepared from a PET bottle which has been blow-molded and joined to a HDPE base cup with a hot melt adhesive which consists essentially of a blend of: (1) a block copolymer selected from the class consisting of: (a) A-B-A block copolymer where A is a monovinyl aromatic hydrocarbon and B is either a conjugated diene or a rubbery mono-olefin and (b) a teleblock copolymer comprising molecules having at least three branches radially branching out from a central hub, each said branch having polystyrene terminal blocks and a butadiene segment in the center; (2) at least one tackifying resin which serves to extend the adhesive properties of the system; (3) at least one stabilizer; and (4) at least one wax or oil diluent. The resultant assemblies are characterized by bonds or joints which possess an unusual combination of excellent low and high temperature adhesion and flexibility as well as high bond strengths.

PVC-FREE SEALING COMPOUND

A PVC-free sealing compound, particularly a sealing compound for use on containers, comprising a mixture of low density polyethylene or linear low density polyethylene; a styrene-isoprene-styrene block copolymer or a thermoplastic elastomeric blend of an ethylene-propylene copolymer such as EPM or EPDM, EVA and process oil, one or more fillers such as talc, and optionally cork powder.

DISPOSABLE ARTICLE MULTI-LINE CONSTRUCTION ADHESIVE

High molecular weight radial or teleblock copolymers can be used as hot melt agents in the construction of disposable laminates such as disposable diapers and feminine pads.

TOUGHENED HOT MELT ADHESIVE COMPOSITION FOR BOOK CASEMAKING

A case or cover for a hard bound book is formed by bonding the formed by bonding the cover boards to the book cover stock using a hot melt pressure sensitive adhesive composition comprising: a) 10 to 40% by weight of a substantially radial styrene-butadiene block copolymer, the copolymer having a styrene content greater than about 35% by weight, a modulus at 300% elongation of at least 4.5 MPa and a solution viscosity less than about 1000 cps; b) 20 to 65% by weight of a compatible tackifying resin; c) 0.1 to 4% by weight stabilizer; and d) the remainder (to 100%) comprising a plasticizing oil.

CONTAMINATION-TOLERANT PRESSURE-SENSITIVE ADHESIVE TAPE

Normally tacky and pressure-sensitive adhesive tape which displays good adhesion and shear properties, even hen contaminated with dust, e.g., talcum powder. The adhesive is a rubbery block copolymer (especially styrene-isoprene-styrene), tackified with a combination of certain liquid and solid tackifiers in specified ratios. The tape is especially useful as a closure for disposable diapers.

ADHESIVE FOR PERFECT BOUND BOOKS AND METHOD OF USING SAME

Hot melt adhesives especially suited for use in the-perfect binding of books are prepared from (1) 15-30%X of a block polymer having the general configuration A-B-A wherein A is a non-elastomeric polymer block derived from the moieties of a nonvinyl aromatic hydrocarbon radical and B is an elastomeric polymer block derived from the moities of a conjugated diene monomer; (2) 5-10% of an ethylene vinyl acetate copolymer containing 17 to 42% vinyl acetate; wherein the ratio of the block polymer to the ethylene vinyl acetate copolymer is within the range of 1.75:1 to 6:1; (3) 25-40% of at least one rosin ester tackifier selected from the group consisting of glycerol and pentaerythritol esters of natural and modified rosins. (4) 25-35% of a wax diluent which is solid at room temperature: and (5) 0,5 to 3% of at least one stabilizer. The novel adhesives can be applied to coated stock which has not been primed, and they combine good application properties with the desirable book properties of ...

PRESSURE-SENSITIVE ADHESIVE COMPOSITION, TAPE AND DIAPER CLOSURE SYSTEM

PRESSSURE-SENSITIVE ADHESIVE COMPOSITION, TAPE AND DIAPER CLOSURE SYSTEM Pressure-sensitive adhesive compositions and an improved refastenable tape closure system comprising a release tape and a fastening tape wherein the fastening tape has a balance of properties such that the tape exhibits a maximum in the peel force between peel rates of 10 cm./minute and 400 cm./minute when peeled from a polyolefin substrate as found in disposable diaper back sheets are disclosed. The adhesive of the fastening tape comprises a specific range of compositions including an elastomeric component based on an A-B-A block copolymer wherein the A blocks are derived from styrene or alphamethylstyrene and the B blocks are derived from isoprene, butadiene, or hydrogenated versions of these or an (AB) block copolymer of the same type of composition in another geometry such as a tapered block copolymer or a radial block copolymer, a solid tackifier resin, a liquid tackifier resin, and an end block reinforcing resin ...

COMPOSITE ARTICLE RESISTANT TO MOISTURE-INDUCED DEBONDING

The articles of this invention have increased resistance to moisture induced delamination at a bond line comprising a substrate, a second layer and an adhesive. The increased resistance to moisture and increase in bond strength between the adhesive, the substrate and the second layer is produced through a novel adhesive. The adhesive after spraying cools to below the softening point of the components but retains sufficient liquidity to fully wet or to penetrate the second layer causing the layers to be bonded to the film substrate through intimate adhesive bonds or by bonding through a physical entrapment. The physical entrapment of the nonwoven layer substantially prevents moisture-induced debonding or delamination.

MULTI-POLYMER ADHESIVE COMPOSITIONS

ADHESIVE COMPOSITION

PRESSURE SENSITIVE ADHESIVE COMPOSITION AND COATED PRODUCT

COMPOSITION POUR ADHESIF STRUCTURAL

L'invention se rapporte à une composition pour adhésif structural acrylique contenant un des monomères (méth)acrylates dont au moins 20 % d'un mélange de méthacrylate de 1,3-Dioxan-5-yl et de méthacrylate de 1,3-Dioxolan-4-ylmethyl, ainsi que des copolymères bloc, des élastomères et des particules formées d'une coquille thermoplastique et d'un cur élastomérique.

DUAL COMPOSITION BLOCK COPOLYMERS

Dual composition block copolymers made from conjugated diene and monovinyl aromatic monomers in batch organolithium initiated polymerization show advantageous performance in the production of crosslinked microcellular rubber compounds and pressure sensitive hot melt adhesives. The dual composition block copolymers are partially coupled with a coupling agent linking inner monovinyl aromatic blocks. Their un-coupled low molecular weight fraction has greater monovinyl aromatic repeating unit content than their coupled high molecular weight fraction. Crosslinked microcellular rubber articles made from these copolymers exhibit lower density, smaller and more homogeneous cell size, higher softness and higher resiliency than prior art block copolymers. Rubber compounding of formulations comprising the copolymers proceed at slightly lower torque and slightly lower temperature than with prior art block copolymers. Pressure sensitive hot melt adhesives formulated with the dual composition block copolymers ...

COUNTER TAPERED THERMOPLASTIC ELASTOMERS

A counter tapered thermoplastic elastomer composition comprising: (a) a counter tapered diblock A-[A/B] copolymer with a peak molecular weight from 20,000 to 250,000, which includes a monovinyl aromatic homopolymer block A with a peak molecular weight of at least 8,000 and a counter tapered copolymer block [A/B] with a vinyl content of at least 15 weight percent based on the amount of conjugated diene units in the diblock copolymer; and (b) a block copolymer selected from the group consisting of linear triblock copolymers having a peak molecular weight that is at least about 1.5 times the peak molecular weight of the counter tapered diblock A- [A/B] copolymer described in (a), multiarm coupled block copolymers having a peak molecular weight that is at least about 2.5 times the peak molecular weight of the counter tapered diblock A-[A/B] copolymer described in (a), and mixtures thereof; and (c) wherein the ratio of (a) to (b) in the counter tapered thermoplastic elastomer composition is ...

pressure sensitive adhesive composition and a pressure sensitive adhesive tape

A pressure sensitive adhesive is obtained by polymerizing a mixture containing: (1) 100 mass parts of (meth)acrylic monomer comprising 98-50 mass parts of a first monomer selected from an aliphatic (meth)alkyl acrylate having a carbon number of 4-6 and an aliphatic (meth)alkyl acrylate having a carbon number of 7-12, wherein the glass transition temperature of a homo-polymer thereof is −25 degrees C. or less; and 2-50 mass parts of a second monomer comprising one or more selected from the group consisting of: an amide group-containing ethylenic unsaturated copolymerizing monomer, a carboxylic group-containing ethylenic unsaturated copolymerizing monomer, an amino group-containing ethylenic unsaturated copolymerizing monomer, a non-tertial alkyl(meth)acrylate wherein the glass transition temperature of a homo-polymer thereof is −25 degrees C. or more; and a monomer represented by the chemical structural formula (I) CH 2 ═CR 1 COO(R 2O )nR 3 or CH 2 ═CR 1 COOR 4 R 5 (R 1 methyl or H; R 2 and R 4 =linear or branched alkyl having a carbon number of 1-6; R 3 =methyl, ethyl, or substituted or non-substituted phenyl; R 5 =substituted or non-substituted 4-membered or 5-membered ring containing oxygen; n=1-16); (2) 10-100 mass parts of a block copolymer; (3) 20-100 mass parts of hydrogenated tackifier; and (4) 0.05-1.0 mass parts of a photopolymerization initiator

HOT-MELT ADHESIVE COMPOSITION INTENDED TO FORM A FILM SUITABLE FOR WRAPPING A HOT-MELT ADHESIVE PRODUCT, AND ITS USE

A hot-melt adhesive composition intended to form a film: 2. Composition according to claim 1 , such that it has an intersection point of the moduli of elasticity and viscosity by rheological scanning test at a temperature of 150 to 10° C. at 10° C./min and at the constant oscillation frequency of 10 rad/s claim 1 , comprised within a range from 70 to 100° C.3. Composition according to claim 1 , such that it has moreover a DSC enthalpy of fusion comprised within the range from 40 to 100 J/g.4. Composition according to claim 1 , such that constituent a) has a weight-average molecular weight Mcomprised between 5 kDa and 500 kDa (determined by gel permeation chromatography—GPC—with polystyrene standard) claim 1 , and preferably a styrenes content of the styrene block copolymer generally comprised within a range from 10 to 50% claim 1 , preferably from 10 to 33%.5. Composition according to claim 1 , such that constituent a) is a mixture of diblock copolymers and triblock copolymers having the same elastomeric block B claim 1 , the content of diblock copolymers in the mixture of styrene block copolymers being comprised within a range from 0 to 80% claim 1 , preferably from 0 to 40% by weight.6. Composition according to claim 1 , such that constituent a) is a SEBS type copolymer.7. Composition according to claim 6 , such that constituent a) contains moreover from 0 to 15% claim 6 , preferably from 0 to 10% claim 6 , of at least one SBC copolymer from a category other than SEBS copolymer.8. Composition according to claim 1 , such that the tackifying resin is chosen from the group formed by the tackifying resins belonging to the following category i) or ii) and/or from the group of tackifying resins belonging to the following category iii):{'sub': 5', '9', '9', '5', '5, 'i) hydrocarbon resins with Cunits; DCPD (dicyclopentadiene) hydrogenated resins; Cmodified DCPD hydrogenated resins; C-modified hydrocarbon resins with Cunits; hydrogenated resins with Cunits;'}ii) Terpene ...

LOW TEMPERATURE HOT MELT ADHESIVES FOR DISPOSABLE ARTICLES WITH HIGH CREEP RESISTANCE

The present invention is directed to adhesives suitable for application using a hot melt process at a relatively low temperature in the range of about 110° C. to about 130° C. Such adhesives exhibit desirable viscoelastic properties and are suitable for bonding an elastic attachment in the manufacture of disposable articles, such as disposable diapers. 1. A low application temperature hot melt adhesive comprising:(a) at least one styrenic block copolymer which has a melt flow index greater than 33, measured in accordance with ASTM D 1238, and a styrene content greater than 40%, and(b) a wax,wherein the adhesive has a viscosity less than about 8,500 centipoises at 120° C.2. The low application temperature hot melt adhesive of comprising:(a) 5 to 20 wt % of the styrenic block copolymer;(b) 0.5 to 5% wt % of the wax;(c) 30-70 wt % of a tackifier; and(d) 0.1-2 wt % of an antioxidant.3. The low application temperature hot melt adhesive of wherein the tackifier has a ring and ball softening point less than about 105° C.4. The low application temperature hot melt adhesive of wherein the tackifier is selected from the group consisting of aliphatic C5 resins claim 3 , aliphatic resins claim 3 , dicyclopentadiene resins claim 3 , C5/C9 blended resins and mixtures thereof.5. The low application temperature hot melt adhesive of further comprising 0 to 30 wt % of an oil.6. The low application temperature hot melt adhesive of wherein the adhesive has a crossover temperature greater than 60° C.7. The low application temperature hot melt adhesive of wherein the crossover temperature claim 6 , measured as the point where tan d=1 claim 6 , is greater than 65° C.8. The low application temperature hot melt adhesive of wherein the adhesive has a yield stress of greater than 50 psi.9. The low application temperature hot melt adhesive of wherein the yield stress is greater than 75 psi.10. The low application temperature hot melt adhesive of wherein the styrenic block copolymer is a ...

High flow, hydrogenated styrene-butadiene-styrene block copolymer and applications

The invention relates to unique applications for the novel high melt flow, low viscosity, selectively hydrogenated styrene-butadiene-styrene (hSBS) or selectively hydrogenated controlled distribution styrene-butadiene/styrene-styrene (hSBSS) block copolymers, wherein the melt flow rate of said block copolymer is at least 100 g/10 min at 230° C. under 2.16 kg mass according to ASTM D1238. These block copolymers are novel and have the highest melt flow rate of any styrenic block copolymer also possessing high strength and elasticity. It has applications that prior to the present invention were not normally possible due to the normal low melt flow rate of styrenic block copolymers. The present invention also encompasses various fields of use such as a fiberglass hSBS or hSBSS reinforced mat, low viscosity hSBS or hSBSS coatings for industrial uses, hot melt adhesives prepared from hSBS or hSBSS blended with polyalpha-olefins, and elastic film, fiber, and nonwoven constructions using hSBS or hSBSS.

PRESSURE-SENSITIVE ADHESIVE COMPOSITION AND PRESSURE-SENSITIVE ADHESIVE SHEET

The present invention provides a pressure-sensitive adhesive composition and a pressure-sensitive adhesive sheet comprising a layer formed from the said composition. The pressure-sensitive adhesive composition comprises, as a base polymer, a block copolymer of a mono-vinyl-substituted aromatic compound and a conjugated diene compound. The pressure-sensitive adhesive composition further comprises a tackifier resin (T) having a hydroxyl value of 80 mgKOH/g or higher. 1. A pressure-sensitive adhesive composition comprising:a base polymer consisting of a block copolymer of a mono-vinyl-substituted aromatic compound and a conjugated diene compound, and{'sub': 'H', 'a tackifier resin (T) having a hydroxyl value of 80 mgKOH/g or higher.'}2. The pressure-sensitive adhesive composition according to claim 1 , comprising claim 1 , as the tackifier resin (T) claim 1 , a high softening point resin having a softening point of 120° C. or above.3. The pressure-sensitive adhesive composition according to claim 1 , comprising a terpene-phenol resin as the tackifier resin (T).4. The pressure-sensitive adhesive composition according to claim 1 , further comprising a tackifier resin (T) having a hydroxyl value lower than 80 mgKOH/g.5. The pressure-sensitive adhesive composition according to claim 4 , comprising claim 4 , as the tackifier resin (T) claim 4 , at least one of a petroleum resin and a terpene resin.6. The pressure-sensitive adhesive composition according to claim 4 , comprising claim 4 , as the tackifier resin (T) claim 4 , a low softening point resin having a softening point below 120° C.7. The pressure-sensitive adhesive composition according to claim 4 , comprising claim 4 , as the tackifier resin (T) claim 4 , a high softening point resin having a softening point of 120° C. or above.8. The pressure-sensitive adhesive composition according to claim 1 , wherein the base polymer consists of at least one of a styrene-isoprene block copolymer and a styrene-butadiene block ...

PRESSURE-SENSITIVE ADHESIVE COMPOSITION AND PRESSURE-SENSITIVE ADHESIVE SHEET

The present invention provides a pressure-sensitive adhesive composition comprising a base polymer and a tackifier resin. The base polymer is a block copolymer of a mono-vinyl-substituted aromatic compound and a conjugated diene compound. The tackifier resin comprises a low softening point resin having a softening point below 120° C. and a high softening point resin having a softening point of 120° C. or above. The high softening point resin comprises a terpene-phenol resin. 1. A pressure-sensitive adhesive composition comprising a base polymer and a tackifier resin , whereinthe base polymer is a block copolymer of a mono-vinyl-substituted aromatic compound and a conjugated diene compound,the tackifier resin comprises a low softening point resin having a softening point below 120° C. and a high softening point resin having a softening point of 120° C. or above, with the high softening point resin comprises a terpene-phenol resin.2. The pressure-sensitive adhesive composition according to claim 1 , wherein the base polymer has a diblock fraction of 50% by mass or larger.3. The pressure-sensitive adhesive composition according to claim 1 , wherein the base polymer is a styrene-based block copolymer.4. The pressure-sensitive adhesive composition according to claim 1 , wherein the high softening point resin comprises a terpene-phenol resin having a hydroxyl value of 80 mgKOH/g or higher.5. The pressure-sensitive adhesive composition according to claim 1 , comprising the high softening point resin in an amount of 20 to 100 parts by mass relative to 100 parts by mass of the base polymer.6. The pressure-sensitive adhesive composition according to claim 1 , wherein the low softening point resin comprises at least one of a petroleum resin and a terpene resin.7. The pressure-sensitive adhesive composition according to claim 1 , comprising claim 1 , as the tackifier resin claim 1 , a terpene-phenol resin A and a terpene-phenol resin B claim 1 , wherein the terpene-phenol resin ...

Adhesives For Construction Materials Such As Tiles

Adhesive composition in mat or sheet form for setting construction materials such as tiles. The adhesive composition comprises at least one pressure sensitive adhesive and a reactive adhesive dispersed therein, wherein said reactive adhesive forms a blend or a semi or fully interpenetrating network or a reinforcing phase throughout said pressure sensitive adhesive, said mat having a thickness defined between a first side and a second side opposite said first side, and at least one release layer removably secured to one of said first side or said second side. Embodiments include application of the adhesive by providing an adhesive mat having a back release liner and a top release liner opposite the back release liner, removing the back release liner, laying the mat on the substrate such as a floor, applying pressure to the mat to ensure good contact between the mat and the substrate, removing the top release liner, and positioning the tile onto the adhesive mat.

HIGH FLOW, HYDROGENATED STYRENE-BUTADIENE-STYRENE BLOCK COPOLYMER AND APPLICATIONS

The invention relates to unique applications for the novel high melt flow, low viscosity, selectively hydrogenated styrene-butadiene-styrene (hSBS) or selectively hydrogenated controlled distribution styrene-butadiene/styrene-styrene (hSBSS) block copolymers, wherein the melt flow rate of said block copolymer is at least 100 g/10 min. at 230° C. under 2.16 kg mass according to ASTM D1238. These block copolymers are novel and have the highest melt flow rate of any styrenic block copolymer also possessing high strength and elasticity. It has applications that prior to the present invention were not normally possible due to the normal low melt flow rate of styrenic block copolymers. The present invention also encompasses various fields of use such as a fiberglass hSBS or hSBSS reinforced mat, low viscosity hSBS or hSBSS coatings for industrial uses, hot melt adhesives prepared from hSBS or hSBSS blended with polyalpha-olefins, and elastic film, fiber, and nonwoven constructions using hSBS or hSBSS. 1. A laminating adhesive having a high melt flow rate , low viscosity , high strength , and good elastic properties , intended for textile applications , comprising: a blend of styrenic block copolymer and tackifying resin , said styrenic block copolymer being selectively hydrogenated styrene-diene-styrene or a selectively hydrogenated controlled distribution styrene-diene/styrene-styrene , where diene can be butadiene , isoprene , or mixtures thereof , said styrenic block copolymer possess a melt flow rate equal to or greater than 100 g/10 min. , at 230° C. and 2.16 kg ,2. The laminating adhesive of claim 1 , wherein said styrenic block copolymer has a minimum linear true peak molecular weight (Mp) of about 45 claim 1 ,000 claim 1 , a polystyrene content of between about 18 to about 45% claim 1 , a vinyl content of about 65 to 80% claim 1 , and a coupling efficiency of about 60 to about 97% claim 1 , said blend having a melt flow rate greater than about 15 g/10 min. at 160° ...

DRY ADHESIVES

A dry adhesive comprising a micro-featured and nano-featured surface, and a compliant surface having a hardness of about 60 Shore A or less, the micro-featured and nano-featured surface and the compliant surface being capable of forming upon contact a dry adhesive bond with each other. 115-. (canceled)16. A laminating film for laminating a micro-featured and nano-featured surface , the laminating film having a compliant surface having a hardness of about 60 Shore A or less , the compliant surface being capable of forming upon contact a dry adhesive bond with the micro-featured and nano-featured surface.17. The laminating film of claim 16 , wherein the compliant surface is a surface of a compliant layer located on a base layer.18. The laminating film of claim 16 , wherein the compliant surface comprises spots of a compliant material deposited on a base layer.19. The laminating film of claim 16 , wherein the compliant surface comprises a polymer.20. The laminating film of claim 16 , wherein the micro-featured and nano-featured surface is a paper surface.21. The laminating film of claim 20 , wherein the paper surface is a surface of an inkjet photo paper.22. The laminating film of claim 19 , wherein the polymer comprised in the compliant surface is a thermoplastic elastomer or a crosslinked elastomer.23. The laminating film of claim 22 , wherein the polymer comprised in the compliant surface is a silicon elastomer claim 22 , a silicon rubber claim 22 , a styrene-isoprene elastomer claim 22 , a styrene-butadiene elastomer claim 22 , a styrene-ethylene/butylene-styrene elastomer claim 22 , a styrene-ethylene/propylene-styrene elastomer claim 22 , an ethylene-butadiene-styrene elastomer claim 22 , a siloxane polymer claim 22 , or a poly-isocyanate.24. The laminating film of claim 16 , wherein the compliant surface has a hardness of about 55 Shore A or less.25. The laminating film of claim 24 , wherein the compliant surface has a hardness of about 50 Shore A or less.26. ...

Multilayer film for flexible wrapping

A subject of the present invention relates to a multilayer (or laminate) film, that can be used in the field of flexible wrapping, comprising at least 2 thin layers of material bonded together by a layer of an adhesive composition based on a styrene block copolymer. It also relates to a lamination process suitable for the manufacture of said film.

Pressure-Sensitive Adhesive for an Adhesive Tape and Use thereof in an Adhesive Tape

The invention relates to a pressure-sensitive adhesive comprising at least 70 wt. % of a mixture of (i) block copolymers comprising a mixture of block copolymers having the structure I and II A′-B′, A-B-A, (A-B), (A-B)X and/or (A-B-A)X, where 1. A pressure-sensitive adhesive comprising at least 70 wt. % of a mixture of(i) block copolymers comprising a mixture of block copolymers having the structure I and III) A′-B′{'sub': n', 'n', 'n, 'claim-text': X is the residue of a coupling reagent,', 'n is an integer between 2 and 10,', 'A and A′ are each a polymer block of a vinylaromatic,', 'B and B′ are each a polymer block formed from butadiene, a mixture of butadiene and isoprene and/or a mixture of butadiene and styrene and', 'A and A′, and B and B′, may each be identical or different,, 'II) A-B-A, (A-B), (A-B)X and/or (A-B-A)X, where'}(ii) at least one tackifier resin,the fraction of the block copolymers I) being between 30 and 70 wt. %, based on the total amount of block copolymers,{'sub': w', 'w, 'the fraction of A in the block copolymers II) being between 25 and 40 wt. %, and the A-B unit within at least one of the vinylaromatic block copolymers of structure II having a molecular weight M, of greater than 65 000 g/mol, and the molecular weight Mof the overall block copolymer II being greater than 130 000 g/mol.'}2. The pressure-sensitive adhesive according to claim 1 , wherein the pressure-sensitive adhesive comprises as elastomers only a mixture of vinylaromatic block copolymers of structures I and II claim 1 , it being possible for the mixture to consist of in each case one vinylaromatic block copolymer of structure I and one vinylaromatic block copolymer of structure II or for the mixture to consist of a plurality of different vinylaromatic block copolymers of structures I and II.3. The pressure-sensitive adhesive according to wherein the fraction of the vinylaromatic block copolymer or of the vinylaromatic block copolymers of structure I as part of the sum total ...

Rubber composite reinforced with a textile material provided with a thermoplastic adhesive

Rubber composite, and in particular tyre, reinforced with a sized textile material, such as a fibre or a film, at least one portion of which is coated with an adhesive layer, capable of adhering directly via curing (crosslinking) to an unsaturated rubber matrix, such as a natural rubber matrix, characterized in that said layer comprises an adhesive composition or thermoplastic adhesive, in the liquid or solid state, which is based on at least one unsaturated thermoplastic styrene (TPS) elastomer and a poly(p-phenylene ether) (PPE). Such an adhesive based on unsaturated TPS and PPE advantageously makes it possible to replace a conventional textile adhesive of RFL type. Use of such an adhesive for the adhesive bonding of a textile material to an unsaturated, in particular diene, rubber. Process for obtaining such a composite.

Adhesive Compositions With Reduced Levels of Volatile Organic Compounds

There are provided non-aqueous adhesive compositions comprising a) a styrene-containing polymer, b) modifying agent, and c) a solvent system comprising i) a volatile siloxane compound, and ii) a second compound selected from acetone, methyl acetate, tert-butyl acetate, para-chlorobenzotrifluoride, and combinations thereof. Bonded articles and methods of bonding articles using these compositions are also provided.

Block Copolymer Composition and Adhesive Composition

A block copolymer composition including: 10% by mass or more and 90% by mass or less of a component (a), and 10% by mass or more and 90% by mass or less of a component (b), wherein the component (a) is a block copolymer containing a polymer block (A) primarily including a vinyl aromatic monomer unit and a polymer block (B) primarily including a conjugated diene monomer unit, wherein the block copolymer has a weight average molecular weight of 30,000 or higher and 150,000 or lower; and the component (b) is a block copolymer containing a polymer block (A) primarily including a vinyl aromatic monomer unit and a polymer block (B) primarily including a conjugated diene monomer unit. 1. A block copolymer composition comprising: the component (a) is a block copolymer comprising a polymer block (A) mainly comprising a vinyl aromatic monomer unit and a polymer block (B) mainly comprising a conjugated diene monomer unit, wherein the block copolymer has a weight average molecular weight of 30,000 or higher and 150,000 or lower;', 'the component (b) is a block copolymer comprising a polymer block (A) mainly comprising a vinyl aromatic monomer unit and a polymer block (B) mainly comprising a conjugated diene monomer unit;', 'the component (b) comprises a component (b-2) at a ratio of weight average molecular weight to the weight average molecular weight of the component (a) of 2.5 or more and less than 3.4, and a component (b-3) at a ratio of weight average molecular weight to the weight average molecular weight of the component (a) of 3.4 or more and less than 4.5; and', 'a content of the vinyl aromatic monomer unit in the component (a) and the component (b) is 10 to 50% by mass based on a total amount of the component (a) and the component (b)., '10% by mass or more and 90% by mass or less of a component (a), and 10% by mass or more and 90% by mass or less of a component (b), wherein'}2. The block copolymer composition according to claim 1 , having a viscosity in a 15% by mass ...

Multilayer film

Provided are a multilayer film, a method for producing the multilayer film, and a method for producing a molded body. The multilayer film has excellent three-dimensional overlaying formability and adhesiveness after being formed; can easily be used when being bonded to an adherend; maintains adhesive strength. Specifically, the multilayer film has: an adhesive layer comprising a thermoplastic polymer composition containing a thermoplastic elastomer (A) which is a block copolymer or a hydrogenated product thereof having a polymer block (a1) containing aromatic vinyl compound units and having a polymer block (a2) containing conjugated diene compound units; and a base layer comprising an amorphous resin which has a modulus of elasticity of 2 to 600 MPa at an arbitrary temperature of 110 to 160° C. The tensile elongation at break of the multilayer film at a temperature 5° C. lower than the glass transition temperature of the amorphous resin is at least 160%.

IMPROVED HOT-MELT ADHESIVE FOR MANUFACTURING DISPOSABLE HYGIENE PRODUCTS

1) Hot melt adhesive composition comprising: 1. Hot melt adhesive composition comprising:a) from 5% to 50% by weight of at least one thermoplastic polymer (A) selected from styrene block copolymers (SBC) and polyolefins;b) from 15% to 60% by weight of at least one tackifying resin (B);c) from 5% to 30% by weight of at least one plasticizer (C) selected from a naphthenic oil, a paraffinic oils, polyisobutylene, a benzoate ester, a wax and an acrylic or carboxylic acid modified wax; andd) from 0.1% to 10% by weight of a salt (D) of a hydroxylated fatty acid comprising from 8 to 24 carbon atoms.2. Hot melt adhesive composition according to claim 1 , characterized in that the thermoplastic polymer (A) is a linear triblock styrene-butadiene-styrene copolymer (SBS).3. Hot melt adhesive composition according to claim 1 , characterized in that the thermoplastic polymer (A) is a copolymer of ethylene and α-olefin monomers.4. Hot melt adhesive composition according to claim 1 , characterized in that the tackifying resin (B) is selected among:(a) natural and modified rosins;(b) glycerol and pentaerythritol esters of natural and modified rosins;(c) polyterpene resins;(d) phenolic-modified terpene resins;(e) aliphatic petroleum hydrocarbon resins (C5) having a Ring and Ball softening point of from about 60° C. to 140° C., and the corresponding hydrogenated derivatives;(f) aromatic petroleum hydrocarbons resins (C9) having Ring and Ball softening point of from about 60° C. to 140° C., and the corresponding hydrogenated derivatives;(g) aliphatic and/or aromatic petroleum resins (C5/C9) having a Ring and Ball softening point of from about 60° C. to 140° C., and the corresponding hydrogenated derivatives.5. Hot melt adhesive composition according to claim 1 , characterized in that the softening point of the tackifying resin (B) lies in the range from 90° C. to 125° C.6. Hot melt adhesive composition according to claim 1 , characterized in that the hydroxylated fatty acid is ...

EXTRUDABLE HOT-MELT PRESSURE-SENSITIVE ADHESIVES FOR RESEALABLE PACKAGING HAVING IMPROVED ORGANOLEPTIC PROPERTIES

Hot-melt pressure-sensitive adhesive composition with MFI of 0.01 to 200 g/10 minutes containing: 2. Hot-melt pressure-sensitive adhesive composition according to claim 1 , characterized in that the content of SI diblocks in the composition a1 varies from 50 to 80%.3. Hot-melt pressure-sensitive adhesive composition according to claim 1 , characterized in that the softening temperature of the tackifying resin a2 is between 80 and 150° C.4. Hot-melt pressure-sensitive adhesive composition according to claim 1 , characterized in that it is essentially composed of the composition a1 and of a tackifying resin a2.5. Hot-melt pressure-sensitive adhesive composition according to claim 1 , characterized in that its melt flow index ranges from 2 to 70 g/10 minutes.6. Hot-melt pressure-sensitive adhesive composition according to claim 1 , characterized in that it is provided in the form of granules with a size of between 1 and 10 mm.7. Multilayer film comprising two thin layers B and C of thermoplastic material bonded together by an adhesive layer A claim 1 , characterized in that the said layer A has a thickness of between 7 and 50 μm and is composed of the hot-melt pressure-sensitive adhesive composition a as defined in .8. Multilayer film according to claim 7 , characterized in that the thickness of the adhesive layer A is between 7 and 35 μm.9. Multilayer film according to claim 7 , characterized in that it comprises claim 7 , in addition to the layers A claim 7 , B and C claim 7 , two tie layers D and E such that the adhesive layer A is:connected to the layer B via the layer D, andconnected to the layer C via the layer E.10. Multilayer film according to claim 7 , characterized in that the tie layers D and E are composed of compositions d and e claim 7 , which are identical or different claim 7 , which have a melting point from approximately 80 to 120° C. and essentially comprise polymers chosen from:ethylene homopolymers or copolymers,propylene homopolymers or copolymers ...

Hot melt adhesive

Problem to be solved of the present invention is to provide a hot-melt adhesive agent which is capable of applying at low temperature, has an excellent adhesiveness at low temperature, and a disposable product obtained by employing the hot-melt adhesive agent. Means for solving the problem is a hot-melt adhesive agent comprised of a thermoplastic block copolymer (A) which is a copolymer of vinyl class aromatic hydrocarbons and conjugated diene compounds, wherein the thermoplastic block copolymer (A) comprises a radial type styrene block copolymer having a styrene content of 35 to 45% by weight and a diblock content of 50 to 90% by weight, and having a viscosity at 25° C. as a 25% (by weight) toluene solution of not more than 250 mPa·s (A1).

SURFACE PROTECTION FILM

A surface protection film includes an adhesion layer that includes a blend of a first hydrogenated styrene block copolymer, a second hydrogenated styrene block copolymer different from the first hydrogenated styrene block copolymer, and polyethylene. An Adhesion Build Value of the surface protection film is less than 2.5 after the adhesion layer has been attached to a textured polycarbonate substrate and heated to 90° C. for 10 minutes. 1. A surface protection film comprising:an adhesion layer comprising a blend of a first hydrogenated styrene block copolymer, a second hydrogenated styrene block copolymer different from the first hydrogenated styrene block copolymer, and polyethylene,wherein an Adhesion Build Value of the surface protection film is less than 2.5 after the adhesion layer has been attached to a textured polycarbonate substrate and heated to 90° C. for 10 minutes.2. The surface protection film according to claim 1 , wherein the Adhesion Build Value of the surface protection film is less than 2.0 after the adhesion layer has been attached to a textured polycarbonate substrate and heated to 90° C. for 10 minutes.3. The surface protection film according to claim 1 , wherein the Adhesion Build Value of the surface protection film is less than 1.5 after the adhesion layer has been attached to a textured polycarbonate substrate and heated to 90° C. for 10 minutes.4. The surface protection film according to claim 1 , wherein the first hydrogenated styrene block copolymer comprises about 34 wt % styrene and has a Melt Flow Rate at 230° C. and 2.16 kg of about 48 grams/10 minutes.5. The surface protection film according to claim 1 , wherein the second hydrogenated styrene block copolymer comprises about 65 wt % styrene and has a Melt Flow Rate at 230° C. and 2.16 kg of about 0.4 grams/10 minutes.6. The surface protection film according to claim 1 , wherein the adhesion layer blend comprises a total of 25 wt %-50 wt % hydrogenated styrene block copolymer claim 1 ...

Styrene-based materials for hot melt adhesives

A hot melt adhesive comprises at least one polymer selected from the group consisting of polystyrene, polybutene, polyisobutene, linear low density polyethylene, polypropylene random copolymer, polypropylene, olefin block copolymer, polyolefins, styrene block copolymers, and ethyl vinyl acetate polymers; a tackifying resin; and at least one precisely end-capped polystyrene (PECPS). The use of the styrene-based oligomers and polymers with the precisely controlled end-groups in hot melt adhesive formulations to improve compatibility with polymers and block copolymers frequently used in such adhesives.

MULTILAYER ADHESIVE ABSORBENT LAMINATE

The present invention provides multilayer absorbent laminates useful for absorbing undesired liquids released from packaged food products during storage, display, or heating, including microwave cooking. In one aspect, the present invention provides a multilayer absorbent laminate comprising a first layer comprising an absorbent material, a second layer comprising a polymeric bonding material, a third layer comprising a polymeric support film layer, and a fourth layer comprising an adhesive.

Hot melt adhesive and disposable product

Disclosed is a hot melt adhesive comprising: (A) a thermoplastic block copolymer which is a block copolymer of a vinyl-based aromatic hydrocarbon and a conjugated diene compound; and (B) an amorphous wax modified with a carboxylic acid and/or a carboxylic anhydride. The hot melt adhesive is excellent in applicability at a low temperature near from about 140° C. to about 150° C. and excellent in creep resistance in a wet state, can reduce odor, is excellent in initial adhesive force, and is excellent in adhesive property (peel strength) to an olefin substrate. This hot melt adhesive can be used suitably so as to produce a disposable product.

HOT-MELT PRESSURE-SENSITIVE ADHESIVE

To provide a hot-melt pressure-sensitive adhesive which is easily coated, has a weak odor, high stability with time, and is also excellent in adhesive force retention performance from a low temperature range to a high temperature range. A hot-melt pressure-sensitive adhesive comprising: an amorphous polystyrene resin (A) having a number-average molecular weight of 50,000 or more; and a thermoplastic block copolymer (B) which is a copolymer of vinyl-based aromatic hydrocarbons and conjugated diene compounds. 1. A hot-melt pressure-sensitive adhesive comprising:an amorphous polystyrene resin (A) having a weight-average molecular weight of 50,000 or more; anda thermoplastic block copolymer (B) which is a copolymer of vinyl-based aromatic hydrocarbons and conjugated diene compounds.2. The hot-melt pressure-sensitive adhesive according to claim 1 , further comprising a tackifier (C).3. The hot-melt pressure-sensitive adhesive according to claim 1 , wherein the thermoplastic block copolymer (B) comprises at least one selected from a styrene-butadiene-styrene copolymer and a styrene-isoprene-styrene copolymer.4. A pressure-sensitive adhesive product obtained by coating the hot-melt pressure-sensitive adhesive according to . The present invention relates to a hot-melt pressure-sensitive adhesive, and more particularly to a pressure-sensitive adhesive used for pressure-sensitive adhesive products such as a pressure-sensitive adhesive label, a pressure-sensitive adhesive tape, and a hygiene material.The hot-melt pressure-sensitive adhesive means a pressure-sensitive adhesive which is melted under heating. The hot-melt pressure-sensitive adhesive can be coated on an adherend with no solvent, is solidified by cooling, and exhibits pressure-sensitive adhessiveness in a solidified state. The hot-melt pressure-sensitive adhesive is used for a wide variety of pressure-sensitive adhesive products in paper processing, wood working, hygiene materials, and electronic fields.In general, ...

ADHESIVE COMPOSITION, ADHESIVE FILM, AND BONDING METHOD

An adhesive composition contains (a) a resin consisting of (i) a block copolymer or (ii) 35% by weight or greater and less than 100% of the block copolymer and 65% by weight or less of a random copolymer, the block copolymer having a weight average molecular weight in a range of 50,000 to 150,000, wherein the block copolymer is a diblock copolymer, a triblock copolymer, or a combination thereof, and includes a styrene group, both terminals of a main chain of the triblock copolymer are styrene groups; (b) a solvent which includes a condensed polycyclic hydrocarbon, wherein an adhesive layer formed by using the adhesive composition has a Young's modulus of 0.1 GPa or greater at 23° C., a storage modulus (G′) of 1.5×10Pa or less at 220° C., and a loss factor (tan σ) of 1.3 or less at 220° C.; and (c) a thermal polymerization inhibitor. 1. An adhesive composition , comprising:a resin consisting of (i) a block copolymer or (ii) 35% by weight or greater and less than 100% of the block copolymer and 65% by weight or less of a random copolymer,the block copolymer having a weight average molecular weight in a range of 50,000 to 150,000,wherein the block copolymer is a diblock copolymer, a triblock copolymer, or a combination thereof, and includes a styrene group,both terminals of a main chain of the triblock copolymer are styrene groups, anda styrene group content of the block copolymer is in a range of 10% by weight to 65% by weight;a solvent which includes a condensed polycyclic hydrocarbon,{'sup': '5', "wherein an adhesive layer formed by using the adhesive composition has a Young's modulus of 0.1 GPa or greater at 23° C., a storage modulus (G′) of 1.5×10Pa or less at 220° C., and a loss factor (tan σ) of 1.3 or less at 220° C.; and"}a thermal polymerization inhibitor.2. The adhesive composition according to claim 1 ,wherein the block copolymer is a hydrogenated product.3. The adhesive composition according to claim 1 ,wherein the block copolymer includes a unit of which ...

PROTECTIVE FILM

A protective film 10 of the present invention includes a base material layer and a pressure sensitive adhesive layer, and is used by being attached to a resin substrate at the time of performing heat bending on the resin substrate The pressure sensitive adhesive layer contains a polyolefin having a melting point of lower than 125° C. The base material layer has a first layer which contains a polyolefin having a melting point of 150° C. or higher, and a second layer which contains an adhesive resin. In a case of heating the protective film having such a configuration, in a state of being interposed between two attaching substrates which are formed of polycarbonate, at 145° C. for 30 minutes, peeling off one attaching substrate on the side of the pressure sensitive adhesive layer at 25° C., and then viewing a surface of the one attaching substrate in a plan view, a residual ratio of an area where the pressure sensitive adhesive layer remains is 5% or less. 1. A protective film for heat bending a resin substrate , comprising:a base material layer; anda pressure sensitive adhesive layer positioned between the base material layer and the resin substrate and adhered to the resin substrate,wherein the pressure sensitive adhesive layer includes a polyolefin having a melting point of lower than 125° C. as a main material, the base material layer includes a laminate having a first layer positioned on a side opposite to the pressure sensitive adhesive layer and comprising a polyolefin having a melting point of 150° C. or higher as a main material, and a second layer positioned on a side facing the pressure sensitive adhesive layer and comprising an adhesive resin as a main material, and a residual ratio of an area where the pressure sensitive adhesive layer remains is 5% or less when heating the protective film at 145° C. for 30 minutes in a state that the protective film is being interposed between two attaching substrates formed of polycarbonate and having a dimension of 30 ...

MASK ADHESIVE AND PELLICLE COMPRISING SAME

The present invention provides a mask adhesive that plastically deforms easily, no adhesive residue remains after peeling from the mask, ease of handling is excellent, and haze on a pellicle film is unlikely to be increased. A mask adhesive resolving this problem contains a thermoplastic elastomer (A) for which the temperature at which the loss tangent measured at a frequency of 1 Hz is at a maximum value is −20 to 30° C., a tackifier resin (B), and a process oil (C). The total of the proportion (% CP) of paraffin carbon and the proportion (% CN) of naphthene carbon in the process oil (C) is 50% or more. The temperature of the mask adhesive at which the loss tangent measured at a frequency of 1 Hz is at a maximum value is −10 to 30° C., and the sulfur content of the mask adhesive is 300 μg/g or less. 1. A mask adhesive comprising:100 parts by mass of a thermoplastic elastomer (A) in which a loss tangent measured at a frequency of 1 Hz has a maximum value at a temperature of −20° C. to 30° C.;20 to 150 parts by mass of a tackifier resin (B); and20 to 150 parts by mass of a process oil (C), whereinthe thermoplastic elastomer (A) is at least one selected from the group consisting of a styrene-based thermoplastic elastomer, a (meth)acrylate-based thermoplastic elastomer, and an olefin-based thermoplastic elastomer,in the process oil (C), a total of a proportion (% CP) of paraffin carbon and a proportion (% CN) of naphthene carbon is 50% or more,in the mask adhesive, a loss tangent measured at a frequency of 1 Hz has a maximum value at a temperature of −10° C. to 30° C., and the mask adhesive has a sulfur content of 300 μg/g or less.2. The mask adhesive according to claim 1 , wherein:the process oil (C) has a sulfur content of 2,000 μg/g or less.3. The mask adhesive according to claim 1 , wherein:the proportion (% CP) of paraffin carbon in the process oil (C) is 50% or more.4. The mask adhesive according to claim 1 , wherein:the process oil (C) contains a paraffin-based ...

FARNESENE-BASED TACKIFYING RESINS AND ADHESIVE COMPOSITIONS CONTAINING THE SAME

A tackifying resin includes a farnesene-based polymer having monomeric units derived from a farnesene monomer and one or more optional comonomers selected from the group consisting of dienes, branched mono-olefins, and vinyl aromatics and has a softening point greater than or equal to 80 degrees Celsius. A method of making the farnesene-based polymer includes combining a farnesene monomer and a solvent and optionally adding one or more comonomers selected from the group consisting of dienes, branched mono-olefins, and vinyl aromatics, to provide a monomer feed, and polymerizing the monomer feed by combining the monomer feed with a Friedel-Crafts catalyst in a vessel. The tackifying resin may be combined with an elastomer to form a hot melt adhesive composition. 1. An adhesive composition comprising an elastomer and a tackifying resin ,wherein the tackifying resin comprises a polymer derived from monomers comprising farnesene,the polymer made according to a method comprisingcombining a farnesene monomer and a solvent and optionally adding one or more comonomers selected from the group consisting of dienes, branched mono-olefins, and vinyl aromatics, to provide a monomer feed, andpolymerizing the monomer feed by combining the monomer feed with a Friedel-Crafts catalyst in a vessel.2. The adhesive composition of claim 1 , wherein polymerizing the monomer feed comprises continuously feeding both the monomer feed and the Friedel-Crafts catalyst to the vessel.3. The adhesive composition of claim 1 , wherein the Friedel-Crafts catalyst is selected from the group consisting of BF claim 1 , AlCl claim 1 , SnCl claim 1 , and TiCl.4. The adhesive composition of claim 1 , wherein the Friedel-Crafts catalyst is at least one of AlCland BF.5. The adhesive composition of claim 4 , wherein the monomer feed includes 0 to 90 mol. % of the comonomer based on the total moles of monomer.6. The adhesive composition of claim 4 , wherein the monomer feed includes 0 to 40 mol. % of the ...

Hydrogenated block copolymer

A hydrogenated block copolymer prepared by hydrogenating a block copolymer that contains a polymer block (A) containing a structural unit derived from an aromatic vinyl compound, a polymer block (B) containing a structural unit derived from farnesene, and a polymer block (C) containing a structural unit derived from a conjugated, diene except farnesene, wherein the block copolymer contains at least two above polymer blocks (A), at least one above polymer block (B) and at least one above polymer block (C), and wherein at least one above polymer block (B) is at the terminal, and the hydrogenation rate of the carbon-carbon double bond in the polymer block (B) and the polymer block (C) is 50 mol % or more.

HYDROGENATED BLOCK COPOLYMER, RESIN COMPOSITION, PRESSURE-SENSITIVE ADHESIVE, ADHESIVE, MOLDED OBJECT, LIQUID-PACKAGING CONTAINER, MEDICAL TOOL, MEDICAL TUBE, CORNER MEMBER FOR WEATHER SEAL, AND WEATHER SEAL

Provided are a hydrogenated block copolymer capable of giving a resin composition having good moldability and sufficient mechanical strength and excellent in flexibility, kink resistance and transparency and also excellent in pressure sensitive adhesiveness, adhesiveness and weather resistance, and a resin composition containing the hydrogenated block copolymer, as well as a pressure sensitive adhesive, an adhesive, a molded article, a liquid-packaging container, a medical tool, a medical tube, a corner member for weather seal, and a weather seal that are produced using these. Specifically, the hydrogenated block copolymer is a hydrogenated block copolymer prepared by hydrogenating a block copolymer that contains at least a polymer block (A) consisting mainly of a structural unit derived from an aromatic vinyl compound, and a polymer block (B) consisting mainly of a structural unit derived from isoprene, a structural unit derived from butadiene, or a structural unit derived from a mixture of isoprene and butadiene, wherein the content of the polymer block (A) is 1% by mass or more and less than 5% by mass relative to the total amount of the hydrogenated block copolymer, the total content of the 1,2-bond and the 3,4-bond of the polymer block (B) is 30 to 85 mol %, the hydrogenation rate of the polymer block (B) is 80 mol % or more, and the weight average molecular weight of the hydrogenated block copolymer is 150,000 to 800,000. 1. A hydrogenated block copolymer obtained by hydrogenating a block copolymer that comprises at least a polymer block (A) mainly comprising a structural unit derived from an aromatic vinyl compound , and a polymer block (B) mainly comprising a structural unit derived from isoprene , a structural unit derived from butadiene , or a structural unit derived from a mixture of isoprene and butadiene , wherein:a content of the polymer block (A) is 1% by mass or more and less than 5% by mass relative to a total amount of the hydrogenated block ...

HYDROGENATED COPOLYMER COMPOSITION, ADHESIVE MATERIAL COMPOSITION, AND ADHESIVE FILM

An object of the present invention is to provide a hydrogenated copolymer composition and the like having an excellent balance among initial tack strength, suppression of increase in tackiness, and suppression of uneven thicknesses of a tacky layer. The object can be achieved with the following hydrogenated copolymer composition. 2. The hydrogenated copolymer composition according to claim 1 , wherein the component (a)/the component (b) in terms of mass proportion is 60/40 to 10/90.3. The hydrogenated copolymer composition according to claim 1 ,wherein a vinyl bond content of the conjugated diene monomer unit included in the hydrogenated copolymer composition is 40 mol % to 70 mol %.4. The hydrogenated copolymer composition according to claim 3 , wherein the vinyl bond content is 40 mol % to 61.9 mol %.5. The hydrogenated copolymer composition according to claim 1 , wherein the component (a) and the component (b) are each represented by the following formulas:{'br': None, 'B2-A1-B1 and/or B2-A1-B1-X\u2003\u2003component (a){'br': None, 'sub': 'n', '(B2-A1-B1)X\u2003\u2003component (b)whereinA1 is a polymer block comprising a vinyl aromatic monomer unit as a main component,B1 and B2 are each independently a polymer block comprising a conjugated diene monomer unit as a main component,n is an integer of 2 or greater, andX is a residue of a coupling agent.6. The hydrogenated copolymer composition according to claim 5 , wherein a content of B2 included in the hydrogenated copolymer composition is 3 to 10 mass % based on the composition.7. An adhesive material composition comprising the hydrogenated copolymer composition according to and a tackifier.8. An adhesive film comprising the adhesive material composition according to . The present invention relates to a hydrogenated copolymer composition, an adhesive material composition, and an adhesive film.Block copolymers comprising a vinyl aromatic monomer unit and a conjugated diene monomer unit, which have elasticity ...

High temperature resistant masking adhesive composition

Hot melt processable adhesive compositions to mask electronic components include at least one block copolymer, at least one tackifying resin, at least one semi-crystalline polyolefin polymer, at least one plasticizer, and at least one anti-oxidant. The adhesive composition is a hot melt processable pressure sensitive adhesive composition that is thermally stable, such that the composition when disposed on a surface withstands heating to 260° C. without degradation or flowing, remains optically transparent, and after heating to 260° C. remains cleanly removable.

MODIFIED RESINS AND USES THEREOF

Modified thermoplastic hydrocarbon thermoplastic resins are provided, as well as methods of their manufacture and uses thereof in rubber compositions. The modified thermoplastic resins are modified by decreasing the relative quantity of the dimer, trimer, tetramer, and pentamer oligomers as compared to the corresponding unmodified thermoplastic resin polymers, resulting in a product that exhibits a greater shift in the glass transition temperature of the elastomer(s) used in tire formulations. This translates to better viscoelastic predictors of tire tread performance, such as wet grip and rolling resistance. The modified thermoplastic resins impart remarkable properties on various rubber compositions, such as tires, belts, hoses, brakes, and the like. Automobile tires incorporating the modified thermoplastic resins are shown to possess excellent results in balancing the properties of rolling resistance, tire wear, snow performance, and wet braking performance. 1. A modified thermoplastic resin prepared by polymerization of one or more monomers ,wherein the modified thermoplastic resin has a glass transition temperature (Tg) of between −50° C. and 160° C.,wherein the modified thermoplastic resin has a number average molecular weight of less than 3,000 g/mol,wherein the modified thermoplastic resin has a z-average molecular weight (Mz) of less than 9,000 g/mol,wherein the modified thermoplastic resin comprises less than or equal to 55 wt % oligomers by gel permeation chromatography (GPC), or less than or equal to 38 wt % by high resolution thermogravimetric analysis (TGA), andwherein oligomers consist of dimers, trimers, tetramers, pentamers, or a mixture thereof, of the one or more monomers.2. The modified thermoplastic resin of claim 1 , wherein:(a) the glass transition temperature (Tg) is between −50° C. and 160° C.;(b) the number average molecular weight is less than 1,000 g/mol; and/or(c) the z-average molecular weight is less than 9,500 g/mol.3. The modified ...

Adhesive Properties

Various adhesive compositions are described which may optionally comprise one or more active agents such as pharmaceutical agents. The incorporation of one or more absorbents in combination with one or more crystallization inhibitors improves adhesive characteristics of the compositions. Also described are related methods of improving adhesive characteristics of adhesive compositions with the use of a combination of absorbent and inhibitor. Also described are related methods of using the compositions and articles incorporating such compositions.

Hot-melt adhesive agent

The present invention provides a hot-melt adhesive agent which is capable of applying at low temperature, and has an excellent adhesiveness to a polyolefin substrate, and a disposable product obtained by employing the hot-melt adhesive agent. A hot-melt adhesive agent comprising a thermoplastic block copolymer (A) which is a copolymer of vinyl class aromatic hydrocarbons and conjugated diene compounds, wherein the thermoplastic block copolymer (A) comprises the following component (A1) and component (A2): (A1) a radial type styrene block copolymer having a styrene content of 35 to 45% by weight and a diblock content of 50 to 90% by weight, and having a viscosity at 25° C. as a 25% (by weight) toluene solution of not more than 250 mPa·s; and (A2) a styrene block copolymer having a styrene content of less than 30% by weight, and having a viscosity at 25° C. as a 25% (by weight) toluene solution of more than 250 mPa·s.

ROOFING MATERIALS WITH IMPROVED LOW TEMPERATURE SEALANT PERFORMANCE AND METHODS OF MAKING THEREOF

This invention, in embodiments, relates to a roofing material comprising (a) a coated or covered substrate and (b) a single sealant applied to a surface of the coated or covered substrate, with the single sealant being free of asphalt. The single sealant exhibits a minimum activation temperature (° C.) (tan δ>1) from −10° C. to 0° C. The single sealant is configured to adhere the roofing material to at least one of (i) an underlying roofing material, (ii) an overlying roofing material, and (iii) a roofing deck substrate. 1. A roofing material comprising:(a) a coated or covered substrate; and(b) a single sealant applied to a surface of the coated or covered substrate,wherein the single sealant is free of asphalt,wherein the single sealant exhibits a minimum activation temperature (° C.) (tan δ>1) from −10° C. to 0° C., andwherein the single sealant is configured to adhere the roofing material to at least one of (i) an underlying roofing material, (ii) an overlying roofing material, and (iii) a roofing deck substrate.2. The roofing material according to claim 1 , wherein the single sealant comprises at least one polymer.3. The roofing material according to claim 2 , wherein the least one polymer comprises a styrene block copolymer.4. The roofing material according to claim 2 , wherein the single sealant further comprises at least one of (i) resins claim 2 , (ii) plasticizers claim 2 , (iii) fillers claim 2 , (iv) tackifiers claim 2 , (v) other modifiers or (vi) combinations thereof.5. The roofing material according to claim 1 , wherein the roofing material is a roofing shingle.6. The roofing material according to claim 5 , wherein the roofing shingle is one of (i) an asphaltic shingle claim 5 , (ii) a non-asphaltic shingle claim 5 , and (ii) a polymer-modified asphalt shingle.7. The roofing material according to claim 1 , wherein the substrate comprises one of a fiberglass mat claim 1 , a polyester mat claim 1 , a scrim claim 1 , a coated scrim claim 1 , or a ...

Pressure-Sensitive Adhesive, and Self-Adhesive Products and Composites Comprising the Latter

The invention relates to a block copolymer-containing pressure-sensitive adhesive comprising e) 52% by weight to 65% by weight, preferably 55% by weight to 62% by weight, of an elastomer component, f) 30% by weight to 45% by weight, preferably 35% by weight to 42% by weight, of at least one bonding resin, g) 0% by weight to 15% by weight, preferably to 10% by weight, of at least one softening resin and h) 0% by weight to 18% by weight, preferably to 10% by weight, of further additives, where the elastomer component (a) consists to an extent of at least 90% by weight of polyvinylaromatic-polybutadiene block copolymers, where the polyvinylaromatic-polybutadiene block copolymers include at least one type of diblock copolymer (a1) and at least one type of tri- or multiblock copolymer (a2), the at least one diblock copolymer (a1) has a vinylaromatic content of 15% by weight to 45% by weight, within the elastomer component (a) the proportion of tri- or multiblock copolymer (a2) is between 25% by weight and 50% by weight, preferably between 30% by weight and 45% by weight, the tri- or multiblock copolymer (a2) has a molar mass of at least 125 000 g/mol and a vinylaromatic content of 15% to 45% by weight, and one kind of the tri- or multiblock copolymer is preferably a multi-arm (radial) block copolymer. 1. A block copolymer-containing pressure-sensitive adhesive comprising:a) 52 wt % to 65 wt %, of an elastomer component,b) 30 wt % to 45 wt %, of at least one tackifier resin,c) 0 wt % to 15 wt %, of at least one plasticizing resin, and wherein the elastomer component (a) is at least 90 wt % of polyvinylaromatic-polybutadiene block copolymers, the polyvinylaromatic-polybutadiene block copolymers comprising at least one kind of a diblock copolymer (a1) and at least one kind of a triblock or multiblock copolymer (a2),', 'the at least one diblock copolymer (a1) has a vinylaromatic fraction of 15 wt % to 45 wt %, within the elastomer component (a) the fraction of triblock or ...

HOT MELT COMPOSITION

An objective of the present invention is to provide a hot melt composition having a high form maintaining property at a high temperature and being in excellent adhesion to a substrate and in disassembly. The present invention relates to a hot melt composition comprising: (A1) a styrene-ethylene-ethylene/propylene-styrene block copolymer (SEEPS) and (B1) a hydrocarbon-based oil having an aniline point of 135° C. or more. 1. A hot melt composition comprising:(A1) a styrene-ethylene-ethylene/propylene-styrene block copolymer (SEEPS) and(B1) a hydrocarbon-based oil having an aniline point of 135° C. or more.2. The hot melt composition according to claim 1 , further comprising (A2) a styrene-ethylene/propylene block copolymer (SEP).3. The hot melt composition according to claim 2 , wherein a content of the styrene-ethylene/propylene block copolymer (SEP) (A2) based on 100 parts by weight of the styrene-ethylene-ethylene/propylene-styrene block copolymer (SEEPS) (A1) is 5 to 100 parts by weight.4. The hot melt composition according to claim 1 , further comprising (C1) a tackifier resin having a softening point of 120° C. or more.5. A lighting appliance in which a lens part and a housing part are joined with the hot melt composition according to .6. A vehicle comprising the lighting appliance according to . The present invention relates to a hot melt composition, particularly to the hot melt composition which can prevent deformation of the adhesive at a high temperature and can be easily removed when a lighting appliance is disassembled.A hot melt adhesive is used as a sealant for an automotive lighting appliance. The hot melt adhesive is required to have high sealing property to the automotive lighting appliance and to be removable from the lighting appliance in consideration of disassembly when the lighting appliance is repaired.Conventionally, although moisture-curable hot melt adhesives have been used as sealing agents for a lighting appliance, it has been difficult to ...

Hot-melt pressure sensitive adhesive composition having improved rheological properties

An adhesive compositions containing at least one first styrene-isoprene-styrene block copolymer having a diblock content of not less than 45%, at least one second styrene-isoprene-styrene block copolymer having a styrene content of not more than 30 wt.-%, at least one first tackifying resin having a softening point of equal to or higher than 100° C., and at least one second tackifying resin having a softening point of equal to or higher than 120° C. Further, a method for bonding substrates together using the adhesive composition.

CONSTRUCTION MATERIALS INCLUDING A NON-WOVEN LAYER OF PRESSURE-SENSITIVE ADHESIVE

A construction composite comprising a construction article having a planar surface and a non-woven layer of pressure-sensitive adhesive disposed on the planar surface. 1. A construction composite comprising:i. a construction article having a planar surface; andii. a non-woven layer of pressure-sensitive adhesive disposed on the planar surface.2. The construction composite of claim 1 , further comprising a release liner disposed on said non-woven layer of pressure-sensitive adhesive opposite said construction article.3. The construction composite of claim 1 , where the composite is in the form of a roll.4. The construction composite of claim 1 , where the non-woven construction material is vapor permeable.5. The construction composite of claim 1 , where the composite is vapor permeable.6. The construction composite of claim 1 , where the construction article is a fabric.7. The construction composite of claim 1 , where the construction article is a membrane8. The construction composite of claim 1 , where the construction article is a construction board.9. The construction composite of claim 1 , where the pressure-sensitive adhesive is selected from the group consisting of acrylic polymers claim 1 , butyl rubber claim 1 , ethylene vinyl acetate claim 1 , natural rubber claim 1 , nitrile rubber claim 1 , silicone rubber claim 1 , styrene block copolymers claim 1 , ethylene-propylene-diene rubber claim 1 , ataticpolyalpha olefins claim 1 , and vinyl ether polymers.10. The construction composite of claim 1 , where the pressure-sensitive adhesive is an asphalt-based composition.11. The construction composite of claim 1 , where the pressure-sensitive adhesive is a UV-cured pressure-sensitive adhesive.12. A self-adhering non-woven composite comprising:i. a non-woven construction fabric; andii. a non-woven layer of pressure-sensitive adhesive disposed on a surface of said non-woven construction material.13. The self-adhering non-woven composite of claim 12 , further ...

Adhesive formulations that are free of asphalt or substantially free of asphalt, methods of making the same, and roofing systems utilizing the same

Some embodiments of the present disclosure relate to roofing systems including a substrate and adhesive formulations that are free of asphalt or substantially free of asphalt. Some embodiments of the present disclosure relate to methods of making one or more adhesive formulations that are free of asphalt or substantially free of asphalt. Some embodiments of the present disclosure relate to systems utilizing one or more adhesive formulations that are free of asphalt or substantially free of asphalt.

LAMINATE, PROTECTIVE FILM AND METHOD FOR MANUFACTURING LAMINATE

The present invention relates to a laminate including an adhesive layer that hardly suffers from adhesive transfer and exhibits a good adhesive strength, and a substrate layer, a protective film including the laminate, and a process for producing the laminate. The laminate of the present invention includes an adhesive layer and a substrate layer, in which the adhesive layer includes a hydrogenated product of a copolymer containing a constitutional unit (a) derived from an aromatic vinyl compound and a constitutional unit (b) derived from a conjugated diene; a content of a constitutional unit (b1) derived from farnesene in a whole amount of the constitutional unit (b) derived from the conjugated diene is from 1 to 100% by mass, and a content of a constitutional unit (b2) derived from a conjugated diene other than farnesene in a whole amount of the constitutional unit (b) derived from the conjugated diene is from 0 to 99% by mass; and a hydrogenation rate of carbon-carbon double bonds in the constitutional unit (b) derived from the conjugated diene is 50 mol % or more. 1. A laminate comprising an adhesive layer and a substrate layer , the adhesive layer comprising a hydrogenated product of a copolymer comprising a constitutional unit (a) derived from an aromatic vinyl compound and a constitutional unit (b) derived from a conjugated diene ,a content of a constitutional unit (b1) derived from farnesene in a whole amount of the constitutional unit (b) derived from the conjugated diene being from 1 to 100% by mass, and a content of a constitutional unit (b2) derived from a conjugated diene other than farnesene in a whole amount of the constitutional unit (b) derived from the conjugated diene being from 0 to 99% by mass, anda hydrogenation rate of carbon-carbon double bonds in the constitutional unit (b) derived from the conjugated diene being 50 mol % or more.2. The laminate according to claim 1 , wherein a mass ratio of a whole amount of the constitutional unit (a) ...

Hot Melt Adhesive Composition

A hot-melt adhesive composition includes a styrene-butadiene-styrene triblock copolymer and a styrene-isoprene-styrene triblock copolymer. The hot-melt adhesive composition enables melt processing at a relatively low temperature because of having a low viscosity property and thus exhibits excellent adhesive strength and heat resistance while improving the processability. In particular, the melt adhesive composition has excellent mechanical properties after curing, and thus can be used in various industrial fields. 1. A hot melt adhesive composition comprising:A1) a styrene-butadiene-styrene triblock copolymer, whereina1) a content of the styrene-based unit is 30 to 50 wt %,a2) a diblock content is at least 55% by weight, anda3) a melt flow index measured according to ASTM D1238 is 30 g/10 min or more;A2) a styrene-isoprene-styrene triblock copolymer, whereina21) a content of the styrene-based unit is 30 to 50 wt %, anda22) a diblock content is less than 5% by weight;B) a tackifier; andC) a plastic oil,wherein the hot melt adhesive composition has a softening point measured according to the ASTM D36 standard of 85° C. or higher.2. The hot melt adhesive composition according to claim 1 , wherein the hot melt adhesive composition has a melt viscosity at 140° C. of 7000 cPs or less claim 1 , and a viscosity change rate at 160° C. of 15% or less.3. The hot melt adhesive composition according to claim 1 , wherein the styrene-isoprene-styrene triblock copolymer has a melt flow index measured according to the ASTM D1238 standard of 30 to 50 g/10 min.4. The hot melt adhesive composition according to claim 1 , wherein the hot melt adhesive composition preferably has a tensile strength value of 1 N/mmor more when preparing a test specimen according to the ASTM D638 standard.5. The hot melt adhesive composition according to claim 1 , wherein the styrene-isoprene-styrene triblock copolymer is included in an amount of 1 to 30 parts by weight claim 1 , based on 100 parts by weight ...

All-Weather Pressure-Sensitive Adhesive

The present invention provides a non-cured-in-place waterproofing pressure-sensitive adhesive having a microfibrillar additive for achieving ideal balance between sag resistance at elevated temperatures and good adhesion at low temperatures. Waterproofing membranes comprising a carrier sheet and pressure-sensitive adhesive layer are also described, along with methods of manufacture. 1. A composition for a pressure-sensitive adhesive , comprising:at least one elastomer;at least one tackifier or bitumen;at least one plasticizer; anda microfibrillar rheology-modifying agent,wherein the composition is non-cured-in-place and is substantially devoid of structural diluents, radical addition diluents, curatives, cross-linkers, and liquid reactive oligomers.2. The composition of claim 1 , wherein the at least one elastomer is selected from the group consisting of butyl rubber claim 1 , polyisobutylene claim 1 , vinyl ethers claim 1 , styrene-isoprene-styrene block copolymers claim 1 , styrene-ethylene-butylene-styrene block copolymers claim 1 , styrene-butadiene-styrene block copolymers claim 1 , styrene-butadiene rubber claim 1 , ethylene vinyl acetate copolymers claim 1 , polyisoprene claim 1 , polybutadiene claim 1 , polychloroprene claim 1 , natural rubber claim 1 , and mixtures thereof.3. The composition of claim 1 , wherein the at least one tackifier is selected from the group consisting of rosin esters claim 1 , hydrogenated rosin esters claim 1 , dimerized rosin resins claim 1 , modified rosin resins claim 1 , aliphatic (C-5 resins) hydrocarbon resins claim 1 , hydrogenated aliphatic resins claim 1 , aromatic (C-9 resins) hydrocarbon resins claim 1 , hydrogenated aromatic resins claim 1 , mixed aliphatic/aromatic (mixed C-5/C-9 resins) hydrocarbon resins claim 1 , terpene resins claim 1 , terpene phenolic resins claim 1 , and mixtures thereof.4. The composition of claim 1 , wherein the at least one plasticizer is selected from the group consisting of paraffinic oils ...

HOT MELT ADHESIVE

One aspect of the present invention resides in a hot melt adhesive including a thermoplastic polymer and a tackifier, wherein the tackifier includes an acid-modified tackifier that is modified by at least one of maleic acid and maleic anhydride, and by at least one selected from the group consisting of acrylic acid, methacrylic acid, an acrylic acid ester, and a methacrylic acid ester. 1. A hot melt adhesive comprising a thermoplastic polymer and a tackifier , whereinthe tackifier includes an acid-modified tackifier that is modified by at least one of maleic acid and maleic anhydride, and by at least one selected from the group consisting of acrylic acid, methacrylic acid, an acrylic acid ester, and a methacrylic acid ester.2. The hot melt adhesive according to claim 1 , wherein the acid-modified tackifier is a terpene-based resin that is modified by at least one of maleic acid and maleic anhydride claim 1 , and by at least one selected from the group consisting of acrylic acid claim 1 , methacrylic acid claim 1 , an acrylic acid ester claim 1 , and a methacrylic acid ester.3. The hot melt adhesive according to claim 2 , wherein the terpene-based resin before modification in the acid-modified tackifier is at least one selected from the group consisting of a hydrogenated aromatic modified terpene resin claim 2 , an aromatic modified terpene resin claim 2 , and a hydrogenated terpene resin.4. The hot melt adhesive according to claim 1 , wherein the acid-modified tackifier is a hydrogenated petroleum-based resin that is modified by at least one of maleic acid and maleic anhydride claim 1 , and by at least one selected from the group consisting of acrylic acid claim 1 , methacrylic acid claim 1 , an acrylic acid ester claim 1 , and a methacrylic acid ester.5. The hot melt adhesive according to claim 4 , wherein the hydrogenated petroleum-based resin before modification in the acid-modified tackifier is at least one selected from the group consisting of a hydrogenated ...

ADHESIVE COMPOSITIONS INCLUDING STYRENIC BLOCK COPOLYMERS AND ARTICLES CONTAINING THE SAME

There is provided adhesive compositions comprising a styrenic block copolymer and at least one tackifier, where the at least one tackifier contains non-carbon hetero-atom functionality, and where the adhesive composition is wash durable when bonded to a substrate. There is also provided articles made using these adhesives. 1. An adhesive composition comprising:a styrenic block copolymer; andat least one tackifier;wherein the at least one tackifier contains non-carbon hetero-atom functionality;and wherein the adhesive composition is wash durable when bonded to a substrate.2. The adhesive composition of claim 1 , wherein the at least one tackifier containing non-carbon hetero-atom functionality has an acid number greater than or equal to 1 mg KOH/g.3. The adhesive composition of claim 1 , wherein the adhesive composition is a laminating adhesive.4. The adhesive composition of claim 1 , wherein the adhesive composition is a heat activated adhesive.5. The adhesive composition of claim 2 , wherein the polarity index of the tackifiers is greater than or equal to 2.5.6. The adhesive composition of claim 2 , wherein the polarity index of the composition is between 2.5 and 15.7. The adhesive composition of claim 1 , wherein the styrenic block copolymer comprises styrenic end block and isoprene mid-block.8. The adhesive composition of claim 1 , wherein the styrenic block copolymer comprises a diblock of a styrenic block and an isoprene block.9. The adhesive composition of claim 1 , wherein the total weight percent of all tackifiers in the adhesive composition is greater than or equal to 5 wt % claim 1 , based on the total weight of the adhesive composition.10. The adhesive composition of claim 1 , further comprising at least 0.1 wt % of an anti-oxidant claim 1 , based on the total weight of the adhesive composition.11. An article comprising the adhesive composition of adhered to a laminating substrate.12. The article of claim 11 , wherein the laminating substrate is selected ...

METHOD FOR MANUFACTURING POLYMER LATEX

A method for producing a polymer latex, including an emulsification step of mixing a polymer solution obtained by dissolution of synthetic polyisoprene and/or a styrene-isoprene-styrene block copolymer in an organic solvent, with an aqueous solution including 0.1 to 30 parts by weight of a rosinate based on 100 parts by weight in total of the synthetic polyisoprene and the styrene-isoprene-styrene block copolymer, and emulsifying the resultant in water to thereby obtain an emulsified liquid, a solvent removal step of removing the organic solvent in the emulsified liquid, and a concentration step of concentrating the emulsified liquid from which the organic solvent is removed, and also adjusting the content rate of the rosinate in the emulsified liquid after concentration, in the range of 0.1 to 3 parts by weight based on 100 parts by weight in total of the synthetic polyisoprene and the styrene-isoprene-styrene block copolymer in the emulsified liquid. 1. A method for producing a polymer latex , comprising:an emulsification step of mixing a polymer solution obtained by dissolution of synthetic polyisoprene and/or a styrene-isoprene-styrene block copolymer in an organic solvent, with an aqueous solution comprising 0.1 to 30 parts by weight of a rosinate based on 100 parts by weight in total of the synthetic polyisoprene and the styrene-isoprene-styrene block copolymer, and emulsifying the resultant in water to thereby obtain an emulsified liquid;a solvent removal step of removing the organic solvent in the emulsified liquid; anda concentration step of concentrating the emulsified liquid from which the organic solvent is removed, and also adjusting a content rate of the rosinate in the emulsified liquid in the range of 0.1 to 3 parts by weight based on 100 parts by weight in total of the synthetic polyisoprene and the styrene-isoprene-styrene block copolymer in the emulsified liquid.2. The method for producing a polymer latex according to claim 1 , wherein the ...

Hot melt adhesive

Problem to be solved of the present invention is to provide a hot-melt adhesive agent which is capable of applying at low temperature, has an excellent adhesiveness at low temperature, and a disposable product obtained by employing the hot-melt adhesive agent. Means for solving the problem is a hot-melt adhesive agent comprised of a thermoplastic block copolymer (A) which is a copolymer of vinyl class aromatic hydrocarbons and conjugated diene compounds, wherein the thermoplastic block copolymer (A) comprises a radial type styrene block copolymer having a styrene content of 35 to 45% by weight and a diblock content of 50 to 90% by weight, and having a viscosity at 25° C. as a 25% (by weight) toluene solution of not more than 250 mPa·s (A1).

Foam sheet

Provided is a foam sheet showing little change in dielectric constant even when exposed under a high-humidity condition. The foam sheet of the present invention includes: a foam layer; and a pressure-sensitive adhesive layer arranged on at least one side of the foam layer, wherein the foam sheet has an impact absorbability change amount [(Q−P)×100]/P of 10 (%) or less, where P (N) represents impact absorbability of the foam layer immediately after the foam sheet has been left at rest under conditions of a temperature of 23° C. and a humidity of 50% for 2 hours, and Q (N) represents impact absorbability of the foam layer immediately after the foam sheet has been left at rest under conditions of a temperature of 60° C. and a humidity of 95% for 24 hours.

TRANSPARENT ADHESIVE SHEET

The present invention is a transparent pressure-sensitive adhesive sheet that is formed of a resin composition [F], and has a storage modulus at 25° C. of 1×10to 1×10Pa, the resin composition [F] comprising a modified hydrogenated block copolymer [E] as a main component, the modified hydrogenated block copolymer [E] being obtained by introducing an alkoxysilyl group into a hydrogenated block copolymer [D], the hydrogenated block copolymer [D] being obtained by hydrogenating 90% or more of unsaturated bonds of a block copolymer [C] that comprises at least two polymer blocks [A] comprising a specific compound and at least one polymer block [B] comprising a specific compound, and a ratio (wA:wB) of a total weight fraction wA of the polymer block [A] in the block copolymer [C] to a total weight fraction wB of the polymer block [B] in the block copolymer [C] being 20:80 to 60:40. 1. A transparent pressure-sensitive adhesive sheet that is formed of a resin composition [F] , and has a storage modulus at 25° C. of 1×10to 1×10Pa , the resin composition [F] comprising a modified hydrogenated block copolymer [E] as a main component , the modified hydrogenated block copolymer [E] being obtained by introducing an alkoxysilyl group into a hydrogenated block copolymer [D] , the hydrogenated block copolymer [D] being obtained by hydrogenating 90% or more of unsaturated bonds of a block copolymer [C] that comprises at least two polymer blocks [A] and at least one polymer block [B] , the polymer block [A] comprising a repeating unit derived from an aromatic vinyl compound as a main component , the polymer block [B] comprising a repeating unit derived from a linear conjugated diene compound as a main component , and a ratio (wA:wB) of a total weight fraction wA of the polymer block [A] in the block copolymer [C] to a total weight fraction wB of the polymer block [B] in the block copolymer [C] being 20:80 to 60:40.2. The transparent pressure-sensitive adhesive sheet according to claim ...

Hot-Melt Adhesive Composition

A hot-melt adhesive composition includes a styrene-budadiene-styrene triblock copolymer, a tackifier and a plastic oil. The hot-melt adhesive composition maintains a low-viscosity characteristic and thereby, can be melt-processed at relatively low temperatures and has improved processability. Further, the hot-melt adhesive composition is superior in terms of adhesive force and thermal resistance and also in terms of mechanical properties after curing, and thus can be used in various industrial fields. 1. A hot-melt adhesive composition comprising:A) a styrene-butadiene-styrene triblock copolymer having:a1) a styrene-based unit content of 30 to 50% by weight,a2) a diblock content of 55% by weight or more, anda3) a melt flow index of 30 g/10 min or more as measured according to ASTM D1238 standard,B) a tackifier; andC) a plastic oil,wherein the hot-melt adhesive has a softening point of 75° C. or more as measured according to ASTM D36 standard.2. The hot-melt adhesive composition according to claim 1 ,wherein a melt viscosity at 120° C. is 5500 cPs or less, and a rate of change in the viscosity is 10% or less.3. The hot-melt adhesive composition according to claim 1 ,wherein a melt viscosity at 160° C. is 800 cPs or less, and a rate of change in the viscosity is 10% or less.4. The hot-melt adhesive composition according to claim 1 ,{'sup': '2', 'wherein a tensile strength value is 0.35 N/mmor more at the time of preparing a specimen according to ASTM D638 standard.'}5. The hot-melt adhesive composition according to claim 1 ,wherein the tackifier includes one or more of at least partially hydrogenated rosin ester-based compounds or at least partially hydrogenated dicyclopentadiene-based polymerized petroleum resins.6. The hot-melt adhesive composition according to claim 1 ,wherein the tackifier is included in an amount of 200 to 400 parts by weight based on 100 parts by weight of the styrene-butadiene-styrene triblock copolymer.7. The hot-melt adhesive composition ...

ADHESIVE SHEET FOR SKIN PATCH

It is an object of the present invention to provide an adhesive sheet for skin patch, having adhesive force and cohesive force that are practicable as a pharmaceutical product and exhibiting high drug solubility and sufficient drug skin permeability. According to the present invention, provided is an adhesive sheet for skin patch, having an adhesive layer on a support, wherein the adhesive layer comprises, at least, a thermoplastic elastomer and a long-chain branched alcohol having a total carbon number of 13 or more, the long-chain branched alcohol is comprised in an amount of 40 parts by weight or more and 200 parts by weight or less, with respect to 100 parts by weight of the thermoplastic elastomer, and the adhesive layer does not comprise a tackifier, or comprises a tackifier in an amount of 30% by weight or less, with respect to the amount of the entire adhesive layer. 117-. (canceled)18. An adhesive sheet for skin patch , having an adhesive layer on a support , whereinthe adhesive layer comprises, at least, a thermoplastic elastomer and a long-chain branched alcohol having a total carbon number of 13 or more,the long-chain branched alcohol is comprised in an amount of 40 parts by weight or more and 200 parts by weight or less, with respect to 100 parts by weight of the thermoplastic elastomer, andthe adhesive layer does not comprise a tackifier, or comprises a tackifier in an amount of 30% by weight or less, with respect to the amount of the entire adhesive layer.19. The adhesive sheet for skin patch according to claim 18 , which comprises the long-chain branched alcohol in an amount of 50 parts by weight or more and 200 parts by weight or less claim 18 , with respect to 100 parts by weight of the thermoplastic elastomer.20. The adhesive sheet for skin patch according to claim 18 , which comprises the long-chain branched alcohol in an amount of 10% by weight or more claim 18 , with respect to the amount of the entire adhesive layer.21. The adhesive sheet for ...

SELF-ADHESIVE COMPOUND AND USE THEREOF IN AN ADHESIVE TAPE

A single- or double-sidedly bonding adhesive-sheet strip having a self-adhesive composition comprising a) at least one elastomer, at least one type of polybutadiene block copolymer being used as an elastomer, b) at least one partially hydrogenated hydrocarbon resin having a softening temperature of at least 90° C., c) at least one additional hydrocarbon resin, a terpene phenol resin and/or a colophonium resin having a softening temperature of at least 90° C., d) an optional soft resin, and e) additional additives as applicable. 1. A single- or double-sidedly bonding adhesive-sheet strip , which is carrier-free and hence of only single-ply configuration , comprising a pressure-sensitive adhesive composition at least comprising:(a) at least one elastomer, the elastomer having a fraction of at least 40 wt %, based on the total adhesive composition, and elastomer used comprising at least one kind of a polybutadiene block copolymer that is not hydrogenated in the polybutadiene block;(b) at least one partly hydrogenated hydrocarbon resin (tackifying resin kind 1) having a softening temperature of at least 90° C.;(c) optionally at least one further hydrocarbon resin, a terpene-phenolic resin and/or a rosin having a softening temperature of at least 90° C. (tackifying resin kind 2);(d) optionally a plasticizing resin or plasticizing resin mixture present at a fraction between 0 wt % and 6 wt %, based on the total adhesive composition; and(e) optionally further additives,wherein the tan δ of the pressure-sensitive adhesive composition at application temperature (here 25° C.) at 10 rad/s is at least 0.20 and at 100 rad/s is at least 0.40, and at 10 rad/s is not more than 0.40 and at 100 rad/s is not more than 1.00.2. The single- or double-sidedly bonding adhesive-sheet strip according to claim 1 , wherein the plasticizing resin or plasticizing resin mixture has a melt viscosity at 25° C. and 1 Hz of at least 25 Pa*s and a softening temperature of <25° C.3. The single- or ...

Elastic hot melt adhesive composition and an elastic composite made with the same

This invention claims hot melt adhesive compositions that can be used to form elastic composites that are useful in disposable absorbent articles. The compositions have good elastic recovery and high peel adhesion at a viscosity of less than about 15,000 cps at 177° C. (350° F.). The low viscosity makes it possible to apply the hot melt adhesive at a high line speed and target application to only those areas requiring elastic performance.

SELF-ADHESIVE COMPOUND AND USE THEREOF IN AN ADHESIVE TAPE

A self-adhesive compound comprising a) at least one elastomer, at least one type of polybutadiene block copolymer being used as an elastomer, b) at least one partially hydrogenated hydrocarbon resin having a softening temperature of at least 90° C., c) at least one additional hydrocarbon resin, a terpene phenol resin and/or a colophonium resin having a softening temperature of at least 90° C., d) a soft resin, and e) additional additives as applicable. 1. A pressure-sensitive adhesive at least comprising(a) at least one elastomer, the elastomer having a fraction of at least 40 wt %, based on the adhesive composition, and elastomer used comprising at least one kind of a polybutadiene block copolymer,(b) at least one partly hydrogenated hydrocarbon resin (resin kind 1) having a softening temperature of at least 90° C.,(c) optionally at least one further hydrocarbon resin, a terpene-phenolic resin and/or a rosin having a softening temperature of at least 90° C. (resin kind 2),(d) optionally a plasticizing resin,(e) optionally further additives.2. A pressure-sensitive adhesive at least comprising(a) at least one elastomer, the elastomer having a fraction of at least 40 wt %, based on the adhesive composition, and elastomer used comprising at least one kind of a polybutadiene block copolymer,(b) at least one nonhydrogenated hydrocarbon resin (resin kind 1) having a softening temperature of at least 90° C.,(c) at least one further at least partly hydrogenated or disproportionated hydrocarbon resin, terpene-phenolic resin and/or rosin having a softening temperature of at least 90° C. (resin kind 2),(d) optionally a plasticizing resin,(e) optionally further additives.3. The pressure-sensitive adhesive of claim 1 , whereinthe tan δ of the pressure-sensitive adhesive at application temperature (here 25° C.) at 10 rad/s is at least 0.20 and at 100 rad/s is at least 0.40, andpreferably at application temperature (here 25° C.) at 10 rad/s is not more than 0.40 and at 100 rad/s ...

HOT-MELT ADHESIVE AGENT

Problem to be solved of the present invention is to provide a hot-melt adhesive agent which is capable of applying at low temperature, excellent in adhesiveness at the wide temperature ranges (10 to 40° C.), and excellent in balance between tackiness and retention force, and a disposable product obtained by employing the hot-melt adhesive agent. Means for Solving the problem is a hot-melt adhesive agent comprising a thermoplastic block copolymer (A) which is a copolymer of vinyl class aromatic hydrocarbons and conjugated diene compounds, wherein the thermoplastic block copolymer (A) comprises the following component (A1) and component (A2): (A1) a radial type styrene block copolymer having a styrene content of 35 to 45% by weight, a diblock content of 50 to 90% by weight, and has a viscosity at 25° C. as 25% toluene solution of not more than 250 mPa·s; and (A2) a triblock type styrene block copolymer. 1. A hot-melt adhesive agent comprising a thermoplastic block copolymer (A) which is a copolymer of vinyl class aromatic hydrocarbons and conjugated diene compounds , wherein the thermoplastic block copolymer (A) comprises(A1) a radial type styrene block copolymer having a styrene content of 35 to 45% by weight , a diblock content of 50 to 90% by weight , and has a viscosity at 25° C. as 25% toluene solution of not more than 250 mPa·s; and(A2) a triblock type styrene block copolymer.2. The hot-melt adhesive agent according to claim 1 , wherein the radial type styrene block copolymer (A1) comprises a three branched type styrene-butadiene block copolymer.3. The hot-melt adhesive agent according to claim 1 , wherein the thermoplastic block copolymer (A) further comprises (A3) a linear type styrene block copolymer having a diblock content of 50 to 90% by weight.4. The hot-melt adhesive agent according to claim 1 , having a melt viscosity at 140° C. of less than 4000 mPa·s.5. A disposable product comprising the hot-melt adhesive agent according to .6. The disposable product ...

ELASTIC PARTICLE AND PREPARATION METHOD THEREOF

The present disclosure relates to an elastic particle and a preparation method thereof. An elastic particle is produced from raw materials including, by weight percent, 20% to 55% of styrenic block copolymer, 20% to 77% of softening oil, and 3% to 25% of liquid rubber. 1. An elastic particle , wherein the elastic particle is produced from raw materials comprising: by weight percent , 20% to 55% of styrenic block copolymer , 20% to 77% of softening oil , and 3% to 25% of liquid rubber.2. The elastic particle of claim 1 , wherein the styrenic block copolymer is at least one selected from the group consisting of SBS claim 1 , SIS claim 1 , SEBS claim 1 , SEPS claim 1 , and SEEPS.3. The elastic particle of claim 1 , wherein the softening oil is at least one selected from the group consisting of paraffin oil and naphthenic oil.4. The elastic particle of claim 1 , wherein the liquid rubber is at least one selected from the group consisting of diene rubber and polyisobutylene rubber.5. The elastic particle of claim 4 , wherein the diene rubber is at least one selected from the group consisting of nitrile butadiene rubber claim 4 , styrene butadiene rubber claim 4 , butadiene rubber claim 4 , isoprene rubber claim 4 , and butyl rubber.6. The elastic particle of claim 1 , wherein the raw materials comprise: by weight percent claim 1 , 25% to 40% of styrenic block copolymer claim 1 , 40% to 65% of softening oil claim 1 , and 10% to 20% of liquid rubber.7. A method of preparing an elastic particle claim 1 , comprising:weighing 20% to 55% by weight of styrenic block copolymer, 20% to 77% by weight of softening oil, and 3% to 25% by weight of liquid rubber; andmixing the styrenic block copolymer, the softening oil, and the liquid rubber at room temperature under continuous stirring to obtain the elastic particle.8. The method of claim 7 , wherein the mixing the styrenic block copolymer claim 7 , the softening oil claim 7 , and the liquid rubber at room temperature under ...

Hot-Melt Adhesive Composition and Manufacturing Method Therefor

A hot melt adhesive composition is provided that includes: a diblock copolymer including a styrene-based monomer-derived unit and a conjugated diene-based monomer-derived unit; a triblock copolymer which is a coupled polymer of the diblock copolymer; and a crosslinked block copolymer including a crosslinking agent-derived crosslinked part crosslinked with two or more of the diblock copolymer and the triblock copolymer. The conjugated diene-based monomer-derived unit includes an isoprene-derived unit and an epoxidized isoprene rubber. 2. The hot melt adhesive composition of claim 1 , wherein the epoxidized isoprene unit included in the hot melt adhesive composition is included from 0.5 to 5 parts by weight claim 1 , based on a total of 100 parts by weight of the isoprene-derived unit and the epoxidized isoprene unit.3. The hot melt adhesive composition of claim 1 , wherein the styrene-based monomer-derived unit included in the hot melt adhesive composition is included from 10 to 20 parts by weight claim 1 , based on a total of 100 parts by weight of the diblock copolymer and the triblock copolymer.4. The hot melt adhesive composition of claim 1 , wherein the diblock copolymer is included a from 15 to 25 parts by weight claim 1 , based on a total of 100 parts by weight of the diblock copolymer and the triblock copolymer.5. The hot melt adhesive composition of claim 1 , wherein the crosslinking agent-derived crosslinked part is one or more selected from the group consisting of polyalkylene glycol and ethylene glycol.6. The hot melt adhesive composition of claim 1 , further comprising a blend for a hot melt adhesive claim 1 , wherein the blend is one or more selected from the group consisting of a tackifier claim 1 , a plastic oil claim 1 , and an antioxidant.7. A method of preparing a hot melt adhesive composition claim 1 , comprising:polymerizing a styrene-based monomer in the presence of a hydrocarbon solvent and a polymerization initiator to prepare a styrene-based ...

PRESSURE-SENSITIVE ADHESIVE SHEET

This invention provides a PSA sheet comprising a PSA layer (A) constituting an adhesive face and a viscoelastic layer (B) supporting the PSA layer (A). The PSA layer (A) comprises, as a base polymer (A), a block copolymer of a monovinyl-substituted aromatic compound and a conjugated diene compound. The base polymer (A) comprises 30% by mass or more of a diblock copolymer. The viscoelastic layer (B) has a thickness of 200 μm or larger. 1. A pressure-sensitive adhesive sheet comprisinga pressure-sensitive adhesive layer (A) constituting an adhesive face, anda viscoelastic layer (B) supporting the pressure-sensitive adhesive layer (A), whereinthe pressure-sensitive adhesive layer (A) comprises, as a base polymer (A), a block copolymer of a monovinyl-substituted aromatic compound and a conjugated diene compound,the base polymer (A) comprises 30% by mass or more of a diblock copolymer, andthe viscoelastic layer (B) has a thickness of 200 μm or larger.2. The pressure-sensitive adhesive sheet according to claim 1 , wherein the viscoelastic layer (B) comprises hollow particles.3. The pressure-sensitive adhesive sheet according to claim 1 , wherein the viscoelastic layer (B) has bubbles.4. The pressure-sensitive adhesive sheet according to claim 1 , wherein the viscoelastic layer (B) comprises an acrylic polymer as a base polymer (B).5. The pressure-sensitive adhesive sheet according to comprising a pressure-sensitive adhesive layer (B) as the viscoelastic layer (B).6. The pressure-sensitive adhesive sheet according to claim 1 , wherein the pressure-sensitive adhesive layer (A) comprises a tackifier resin Thaving a softening point of 120° C. or above and a tackifier resin Thaving a softening point below 120° C.7. The pressure-sensitive adhesive sheet according to claim 1 , wherein the pressure-sensitive adhesive layer (A) comprises a tackifier resin Thaving a softening point of 120° C. or above claim 1 , and the tackifier resin Tcomprises a tackifier resin Thaving an ...

CROSS-LINKABLE ADHESIVE COMPOUND WITH HARD AND SOFT BLOCKS AS A PERMEANT BARRIER

Adhesive compound as a permeant barrier, comprising (i) block copolymers having a construction A-B-A, (A-B), (A-B)X, or (A-B-A)X, where X is the radical of the coupling reagent, n is a whole number between 2 and 10, A is a polymer made of a vinyl aromatic compound and B is a polymer block made of an alkene or diene, wherein this polymer block can also be hydrated, with the condition that at least part of the A blocks is sulfonated, optionally with two-block copolymers in the form of A-B as an admixture component, and (ii) at least one tackifier resin. 1. An adhesive comprised of{'sub': n', 'n', 'n, '(i) block copolymers and also mixtures thereof, having an A-B-A, (A-B), (A-B)X, or (A-B-A)X construction, where X is the radical of a coupling reagent, n is an integer between 2 and 10, A is a polymer block of a vinylaromatic, and B is a polymer block of an alkene or diene, and where some of the A blocks are sulfonated, and diblock copolymers of the form A-B optionally as admixture component, and'}(ii) at least one tackifier resin.2. The adhesive as claimed in claim 1 , wherein B is a hydrogenated polymer block of an alkene or diene.3. The adhesive as claimed in wherein some of the block copolymers are in the form of sulfonated copolymers and have sulfonated A blocks claim 1 , the aromatic moieties of which are sulfonated to an extent of 0.5 to 20 mol % per mole of the monomer unit claim 1 , based on the total monomer units of the A blocks in the sulfonated copolymer.4. The adhesive as claimed in claim 1 , further comprising (iii) at least one metal complex with a substitutable complexing agent.5. The adhesive as claimed in claim 1 , wherein the admixture component is a diblock copolymer of the form A-B claim 1 , a copolymer with polymer blocks A′ of vinylaromatics and polymer blocks B′ of an alkene or diene.6. The adhesive as claimed in claim 1 , wherein (i) the A blocks each independently have a Tof more than 40° C. and the B blocks each independently have a Tof less ...

HOT MELT ADHESIVE SHEET AND DECORATIVE SHEET WITH ADHESIVE LAYER

Provided is a hot melt adhesive sheet comprising a hot melt adhesive that comprises a styrene-based block copolymer and a tackifier, in which the styrene-based block copolymer comprises a hard segment composed of a polystyrene block and a soft segment composed of a constituent unit derived from propylene. 1. A hot melt adhesive sheet comprising an adhesive layer comprising a hot melt adhesive , wherein the hot melt adhesive comprises a styrene-based block copolymer and a tackifier , and the styrene-based block copolymer has a hard segment composed of a polystyrene block and a soft segment composed of a constituent unit derived from propylene.2. The hot melt adhesive sheet according to claim 1 , wherein the styrene-based block copolymer has a molecular structure provided with the soft segment between two polystyrene blocks.3. The hot melt adhesive sheet according to claim 1 , wherein the tackifier is a hydrogenated aromatic petroleum resin.4. A decorative sheet with adhesive layer having an adhesive layer formed on one side of a decorative sheet claim 1 , whereinthe adhesive layer comprises a hot melt adhesive,the hot melt adhesive comprises a styrene-based block copolymer and a tackifier, andthe styrene-based block copolymer has a hard segment composed of a polystyrene block and a soft segment composed of a constituent unit derived from propylene.5. The decorative sheet with adhesive layer according to claim 4 , wherein the styrene-based block copolymer has a molecular structure provided with the soft segment between two polystyrene blocks.6. The decorative sheet with adhesive layer according to claim 4 , wherein the tackifier is a hydrogenated aromatic petroleum resin.7. The decorative sheet with adhesive layer according to configured to be used for adhesion to an adherend in which at least a surface of the adherend claim 4 , to which the adhesive layer is adhered claim 4 , is composed of a resin composition comprising a polypropylene resin. This application claims ...

SELF-ADHESIVE ARTICLE AND USE THEREOF FOR BONDING ON COATED WOODCHIP WALLPAPER

A self-adhesive article comprising (i) at least one carrier material which comprises at least one foamed layer having a first surface A and a second surface B, the at least one foamed layer of the carrier material having a thickness of at least 500 μm and at most 1800 μm, a tensile strength in detachment direction of at least 500 kPa, a tensile elongation in detachment direction of at least 300% and a compressive hardness of at least 50 kPa, (ii) a layer HKA of pressure-sensitive adhesive (PSA) assigned to the surface (A), (iii) a PSA layer HKB assigned to the surface (B) and (iv) optionally further layers; the PSA layers HKA and HKB may be two PSA layer combinations. 3. The self-adhesive article as claimed in claim 1 , whereina) the pressure-sensitive adhesive layer HKB1 comprisesa) at least one elastomer component of the type of a polybutadiene-polyvinylaromatic block copolymer having a fraction in relation to the total adhesive of 40 wt % to 60 wt % and a diblock fraction in relation to the total block copolymer content of 10 wt % to 30 wt %,b) at least one tackifier resin which is a hydrocarbon resin having a DACP of at least +5° C. and at most +50° C. and an MMAP of at least +50° C. and at most +85° C.,c) optionally at least one plasticizing resin having a fraction of 0 wt % to 12 wt %, based on the total adhesive,d) optionally further additives.4. The self-adhesive article as claimed in claim 1 , wherein at least one of the elastomer components consists to an extent of at least 90 wt % claim 1 , based on the total block copolymer content claim 1 , of at least one polybutadiene block copolymer claim 1 , wherein the at least one polybutadiene block copolymer comprises polymer blocks predominantly formed by polymerization of vinylaromatics (A blocks) and blocks predominantly formed by polymerization of 1 claim 1 ,3-butadiene (B blocks).5. The self-adhesive article as claimed in claim 1 , wherein at least one of the tackifier resins is a hydrocarbon resin having a ...

ADHESIVE MASS, IN PARTICULAR FOR STRIPPABLE ADHESIVE STRIPS AND USE FOR ADHERING ON COATED WOODCHIP WALLPAPER

An adhesive mass consisting of (a) at least one elastomer component, of a polybutadiene-polyvinyl aromatic block copolymer type, having a proportion with respect to the total adhesive mass of 42 to 55 wt. % and having a deblock proportion with respect to the total block copolymer content of 32 to 55 wt. %, (b) at least one adhesive resin, which is a hydrocarbon resin having a DACP value of at least +50° C. and at most +85° C., (c) optionally at least one soft resin having a proportion of 0 to 15 wt. % with respect to the total adhesive mass, and (d) optionally further additives, which adhesive mass is particularly suitable for adhering on rough substrates such as plaster or woodchip wallpaper. 1. An adhesive consisting of(a) at least one elastomer component of the type of a polybutadiene-polyvinylaromatic block copolymer having a fraction in relation to the total adhesive of 42 wt % to 50 wt % and a diblock fraction in relation to the total block copolymer content of 32 wt % to 55 wt %, preferably,(b) at least one tackifier resin which is a hydrocarbon resin having a DACP of at least +5° C. and at most +50° C. and an MMAP of at least +50° C. and at most +85° C.,(c) optionally at least one plasticizing resin having a fraction of 0 wt % to 15 wt %, based on the total adhesive,(d) optionally further additives.2. The adhesive as claimed in claim 1 , characterized whereinthe elastomer component is composed to an extent of at least 90 wt %, based on the total block copolymer content, of at least one polybutadiene-polyvinylaromatic block copolymer which comprises polymer blocks predominantly formed by polymerization of vinylaromatics (A blocks) and blocks predominantly formed by polymerization of 1,3-butadiene (B blocks).3. The adhesive as claimed in claim 1 , wherein the tackifier resin is a hydrocarbon resin having a DACP of at most +45° C.4. The adhesive as claimed in claim 1 , wherein the tackifier resin is a hydrocarbon resin having an MMAP of at most +80° C.5. The ...

REMOVABLE CONTACT-ADHESIVE TAPE

The invention relates to a contact-adhesive tape which can be removed damage-free and residue-free by stretching the tape substantially within the adhesion plane and which consists of one or more adhesive substance layers, all made of a contact-adhesive substance expanded with micro-balloons, and one or two optional intermediate backings. The disclosed contact-adhesive tape consists exclusively of the aforementioned adhesive substance layers and optional intermediate backings, and the one external upper surface as well as the one external lower surface of the contact-adhesive tape are formed by said adhesive substance layer or layers. 1. A pressure-sensitive adhesive strip which is redetachable without residue or destruction by extensive stretching substantially within the bond plane , comprising one or more layers of adhesive , all of which consist of a pressure-sensitive adhesive foamed with microballoons , and optionally comprising one or more intermediate carrier layers , wherein the pressure-sensitive adhesive strip consists exclusively of the stated layers of adhesive and optional intermediate carrier layers present , and an outer upper face and an outer lower face of the pressure-sensitive adhesive strip are formed by the stated layer or layers of adhesive.2. The pressure-sensitive adhesive strip as claimed in claim 1 , wherein the pressure-sensitive adhesive strip consists of a single layer of adhesive.3. The pressure-sensitive adhesive strip as claimed in claim 1 , wherein the pressure-sensitive adhesive strip consists of a layer of adhesive which has a single intermediate carrier composed more particularly of a polymer film.4. The pressure-sensitive adhesive strip as claimed in claim 1 , wherein the pressure-sensitive adhesive is constructed on the basis of vinylaromatic block copolymers and tackifying resins claim 1 , with selection to an extent of at least 75% by weight (based on the total resin content) of a resin having a DACP (diacetone alcohol cloud ...

FOAMED ADHESIVE, MORE PARTICULARLY PRESSURE-SENSITIVE ADHESIVE, PROCESS FOR THE PRODUCTION AND ALSO THE USE THEREOF

Process for producing a pressure-sensitive adhesive comprising expanded microballoons, wherein the constituients for forming the adhesive are mixed in a first mixing assembly, the mixed adhesive is transferred into a second mixing assembly into which, at the same time, unexpanded microballoons are fed, the microballoons are expanded in the second mixing assembly or on exit from the second mixing assembly, the adhesive mixture with the expanded microballoons is shaped to a layer in a shaping assembly in which expanded microballoons which have broken through the surface are pressed into the layer surface and the layer of adhesive mixture together with the expanded microballoons are optionally applied to a weblike backing material. 1. Process for producing a pressure-sensitive adhesive which comprises expanded microballoons , whereinthe constituents for forming the adhesive are mixed in a first mixing assembly, the mixed adhesive from the first mixing assembly is transferred into a second mixing assembly, into which, at the same time, unexpanded microballoons are fed, the microballoons are expanded in the second mixing assembly or on exit from the second mixing assembly, the adhesive mixture together with the expanded microballoons is shaped to a layer in a shaping assembly in which expanded microballoons which have broken through the surface are pressed into the layer surface, and the layer of adhesive mixture together with the expanded microballoons is optionally applied to a weblike backing material.2. Process for producing a pressure-sensitive adhesive which comprises expanded microballoons , whereinthe constituents for forming the adhesive are mixed with unexpanded microballoons in a first mixing assembly under superatmospheric pressure and are heated to a temperature below the expansion temperature of the microballoons,the mixed adhesive from the first mixing assembly is transferred to a second assembly and heated to expansion temperature of the microballoons ...

HYDROGENATED BLOCK COPOLYMER

A hydrogenated block copolymer prepared by hydrogenating a block copolymer that contains a polymer block (A) containing a structural unit derived from an aromatic vinyl compound, a polymer block (B) containing a structural unit derived from farnesene, and a polymer block (C) containing a structural unit derived from a conjugated diene except farnesene, wherein the block copolymer contains at least two above polymer blocks (A), at least one above polymer block (B) and at least one above polymer block (C), and wherein at least one above polymer block (B) is at the terminal, and the hydrogenation rate of the carbon-carbon double bond in the polymer block (B) and the polymer block (C) is 50 mol % or more. 1. An elastic member produced by molding a thermoplastic elastomer composition comprising a hydrogenated block copolymer (I) , wherein:the hydrogenated block copolymer (I) is a hydrogenate of a block copolymer (P) comprising:a polymer block (a) comprising a structural unit derived from an aromatic vinyl compound, a polymer block (b) comprising 1 to 100% by mass of a farnesene-derived structural unit (b1) and 99 to 0% by mass of a structural unit (b2) derived from a conjugated diene other than farnesene, and a polymer block (c) having a content of the farnesene-derived structural unit (b1) of less than 1% by mass and a content of the structural unit (b2) derived from a conjugated diene other than farnesene of 1 to 100% by mass,and comprising at least two of the polymer blocks (a), at least one of the polymer block (b) and at least one of the polymer block (c), wherein at least one of the polymer block (b) exists at the terminal, and wherein:a ratio by mass of the polymer block (a) to the polymer block (b) [(a)/(b)] is from 1/99 to 70/30, a ratio by mass of the polymer block (a) to a total of the polymer block (b) and the polymer block (c) [(a)/((b)+(c))] is from 1/99 to 70/30,50 mol % or more of a total of carbon-carbon double bonds derived from farnesene and carbon- ...

REUSABLE DESIGN SWATCH APPARATUS AND SYSTEM

A swatch assembly includes a substrate with a decorative sample thereon, and an adhesive layer at least partially covering the substrate. The adhesive layer is a reversible adhesive configured to releasably and temporarily attach the design swatch to an underlying surface, leave the underlying surface unmarked after removal, and retain an adhesion property for a plurality of adhesion cycles. A design system includes a first design swatch with a first substrate and a first adhesive layer being a reversible adhesive, and a second design swatch with a second substrate and a second adhesive layer being a reversible adhesive. A display apparatus for a design swatch includes a substrate layer, an adhesive layer being a reversible adhesive, and an attachment feature supported by the substrate layer and configured to receive a design swatch for display against an underlying surface. 1. A swatch assembly comprising:a substrate having a first side with a decorative sample thereon and a second side; andan adhesive layer at least partially covering the second side of the substrate, the adhesive layer being a reversible adhesive configured to releasably and temporarily attach the design swatch to an underlying surface and leave the underlying surface unmarked after removal, the reversible adhesive retaining an adhesion property for a plurality of adhesion cycles.2. The swatch assembly of wherein the decorative sample extends over all of the first side.3. The swatch assembly of wherein the decorative sample further comprises one of a continuous solid color claim 1 , a pattern claim 1 , and a fabric.4. The swatch assembly of wherein the reversible adhesive further comprises a block copolymer.5. The swatch assembly of wherein the reversible adhesive further comprises a styrene thermoplastic elastomer.6. The swatch assembly of wherein the reversible adhesive has a shear strength and a peel strength claim 1 , the shear strength being greater than the peel strength.7. The swatch ...

Tire ready to receive a member on the surface thereof

A tire comprises an inner surface and/or outer surface with an accommodating region, an adhesive layer arranged on the accommodating region and a protective film arranged on said adhesive layer. The adhesive layer is based on a block thermoplastic styrene (TPS) elastomer comprising an elastomer block based on a diene elastomer comprising a molar content (or content by weight) of unsaturations of greater than 10%, and the adhesive layer comprises one or more polyphenylene ethers (PPEs).

Adhesive composition and laminated film

An adhesive composition is provided. The adhesive composition includes a mixture (A), wherein the mixture (A) includes a first component (a), a cross-linking agent (b), and a second component (c), wherein the second component (c) includes a calcium-containing complex compound or a calcium-containing compound. Based on the total weight of the mixture (A), a content of the first component (a) is from 40 to 80 wt %, a content of the cross-linking agent (b) is from 20 to 60 wt %, and a content of the second component (c) is from 1 to 20 wt %. Specifically, the calcium-containing complex compound is selected from the group consisting of a compound represented by formula (1), a compound represented by formula (2), a compound represented by formula (3), and a compound represent by formula (4), and the calcium-containing compound is selected from the group consisting of a compound represented by formula (5) and a compound represent by formula (6).

Hydrogenated Block Copolymer Composition and Pressure-Sensitive Adhesive Composition

A hydrogenated block copolymer composition, comprising: 1. A hydrogenated block copolymer composition , a component (A) comprising at least one polymer block comprising a vinyl aromatic hydrocarbon as a primary component and at least one polymer block comprising a conjugated diene compound as a primary component, and having a weight-average molecular weight of 30,000 or higher and 500,000 or lower, and', 'a component (B) comprising at least two polymer blocks comprising a vinyl aromatic hydrocarbon as a primary component and at least one polymer block comprising a conjugated diene compound as a primary component, and having a weight-average molecular weight of 50,000 or higher and 1,000,000 or lower;, 'comprisingwherein the composition satisfies requirements (a) to (c) below:(a) a total degree of hydrogenation H (%) of unsaturated double bonds based on the conjugated diene compound is 5 to 90%;(b) a maximum value of a loss factor tan δ at from −100° C. to 0° C. is 0.4 to 4.0; and(c) a ratio between the weight-average molecular weight of the component (A) and the weight-average molecular weight of the component (B) (the weight-average molecular weight of the component (B)/the weight-average molecular weight of the component (A)) is from 1.3 to 10.2. The hydrogenated block copolymer composition according to claim 1 , wherein a content of the component (A) is 20 mass % or more and 90 mass % or less claim 1 , and the content of the component (B) is 10 mass % or more and 80 mass % or less.3. The hydrogenated block copolymer composition according to claim 1 , wherein an SP value is 17.2 (MPa)or higher and 17.7 (MPa)or lower.4. The hydrogenated block copolymer composition according to claim 1 , wherein an SP value of the polymer block comprising a conjugated diene compound as a primary component is 16.8 (MPa)or higher and 17.5 (MPa)or lower.5. The hydrogenated block copolymer composition according to claim 1 , wherein the weight-average molecular weight of the component (B ...

Moisture-Curable Hot-Melt Adhesive Agent

To provide a moisture-curable hot-melt adhesive agent having excellent balance of initial adhesive strength, adhesive strength after curing and heat resistance and the like, and a layered product bonded with the moisture-curable hot-melt adhesive agent. 1. A moisture-curable hot-melt adhesive agent comprisingan urethane prepolymer having an isocyanate group at the end (A),a styrene-isoprene based block copolymer (B), anda tackifying resin (C), whereinthe moisture-curable hot-melt adhesive agent comprises 25 to 64 parts by weight of (A), based on 100 parts by weight in total of (A) and (B).2. The moisture-curable hot-melt adhesive agent according to claim 1 , wherein the moisture-curable hot-melt adhesive agent comprises 60 to 110 parts by weight of the tackifying resin (C) claim 1 , based on 100 parts by weight in total of (A) and (B).3. The moisture-curable hot-melt adhesive agent according to claim 1 , wherein the styrene-isoprene block copolymer (B) comprises a styrene-isoprene block copolymer having a styrene content of 15% by weight or more.4. The moisture-curable hot-melt adhesive agent according to claim 1 , wherein the styrene-isoprene block copolymer (B) comprises both a styrene-isoprene based block copolymer having a styrene content of 15 to 35 wt % (Bi) and a styrene-isoprene based block copolymer having a styrene content of 40 to 70 wt % (Bii).5. The moisture-curable hot-melt adhesive agent according to claim 1 , wherein the styrene-isoprene block copolymer (B) comprises both a styrene-isoprene based block copolymer having a styrene content of 15 to 35 wt % and a diblock content of 30 to 70 wt %.6. The moisture-curable hot-melt adhesive agent according to claim 1 , wherein the styrene-isoprene block copolymer (B) comprises a styrene-isoprene based block copolymer having a styrene content of 40 to 60 wt % and a diblock content of 0 to 40 wt %.7. The moisture curable hot melt adhesive according to claim 1 , wherein the styrene based block copolymer (B) ...

Moisture-Curable Hot-Melt Adhesive Agent

There are provided a moisture curable hot melt adhesive excellent in balance among initial adhesion strength, post curing adhesion strength and heat resistance, and a layered product formed by bonding with that moisture curable hot melt adhesive agent. The moisture-curable hot melt adhesive comprises a urethane prepolymer having an isocyanate group at the end (A), a styrene based block copolymer (B), and an urethane modified rosin (C), wherein the urethane modified rosin (C) is a reaction product of a rosin derivative having hydroxyl group and an isocyanate compound.

Impact-Resistant Stretch-Release Adhesives

Stretch-release adhesives are provided which are derived from mixtures comprising: a) a tackified styrenic block copolymer comprising: i) one or more tackifiers; and ii) one or more styrenic block copolymers; wherein the weight ratio of i) to ii) is not more than 1.0:2.0; and b) one or more (meth)acrylate polymers. In some embodiments, the weight ratio of a) to b) is between 0.4:1.0 and 5.0:1.0 and in some between 1.0:1.0 and 3.9:1.0. In some embodiments, the one or more styrenic block copolymers comprise at least 90 wt % linear block copolymers. In some embodiments, the tackifiers are miscible with rubbery blocks of the styrenic block copolymers and not miscible with the (meth)acrylate polymers. In some embodiments, the mixture is crosslinked. Tapes comprising stretch-release adhesives according to the present disclosure are also provided. 1. A stretch-release adhesive derived from a mixture comprising: i) one or more tackifiers; and', 'ii) one or more styrenic block copolymers;', 'wherein the weight ratio of i) to ii) is not more than 1.0:2.0; and, 'a) a tackified styrenic block copolymer comprisingb) one or more (meth)acrylate polymers.2. The stretch-release adhesive according to wherein the weight ratio of i) to ii) is not more than 1.0:4.0 and at least 1.0:10.0.3. The stretch-release adhesive according to wherein the tackified styrenic block copolymer is not tacky.4. The stretch-release adhesive according to wherein the weight ratio of a) to b) is between 0.4:1.0 and 5.0:1.0.5. The stretch-release adhesive according to wherein the weight ratio of a) to b) is at least 1.0:1.0 and not more than 3.9:1.0.6. The stretch-release adhesive according to wherein the one or more styrenic block copolymers comprise less than 18 wt % styrenic content.7. The stretch-release adhesive according to wherein the one or more styrenic block copolymers comprise at least 90 wt % linear block copolymers.8. The stretch-release adhesive according to wherein the one or more styrenic block ...

HOT MELT COMPOSITION

An objective of the present invention is to provide a hot melt composition having a high form maintaining property at a high temperature and being in excellent adhesion to a substrate and in disassembly. The present invention relates to a hot melt composition comprising: (A1) a styrene-ethylene-ethylene/propylene-styrene block copolymer (SEEPS) and (B1) a hydrocarbon-based oil having an aniline point of 135° C. or more. 1. A method of forming a removable article comprising:1) preparing a first substrate;2) preparing a second substrate; a. 4 to 10 wt % of a styrene-ethylene-ethylene/propylene-styrene block copolymer (SEEPS) and', 'b. 40 to 80 wt % a hydrocarbon-based oil having an aniline point of 135° C. or more;, '3) preparing a removable hot melt composition comprising4) applying the removeable hot melt adhesive composition to the first substrate at 180-210° C.; and 'wherein the removeable hot melt adhesive composition has a shear adhesion value of 2.0 to 6.0 N with an adhesive failure.', '5) applying the second substrate onto the removeable hot melt adhesive composition;'}2. The method of forming a removable article of claim 1 , wherein the first substrate and the second substrate are independently selected from the group consisting of plastics claim 1 , wood claim 1 , rubber claim 1 , glass and metal.3. The method of forming a removable article of claim 2 , wherein the plastic is selected from the group consisting of polyolefin claim 2 , polycarbonate claim 2 , acrylic resin claim 2 , and PET resin.4. The method of forming a removable article of claim 2 , wherein the first substrate and the second substrate are independently polycarbonate claim 2 , acrylic resin or polypropylene.5. The method of forming a removable article of claim 2 , wherein the first substrate and the second substrate are independently polycarbonate and polypropylene.6. The method of forming a removable article of claim 1 , wherein removable hot melt composition further comprises a styrene- ...

GLASS LAMINATE, AND METHOD FOR USING BLOCK COPOLYMER HYDROGENATION PRODUCT AS BINDER FOR GLASS LAMINATE

A laminated glass may be obtained by integrally bonding glass sheets through an adhesive, the adhesive comprising a hydrogenated block copolymer obtained by introducing an alkoxysilyl group into a hydrogenated block copolymer that is obtained by hydrogenating unsaturated bonds of a block copolymer that comprises at least two polymer blocks and at least one polymer block, the polymer block comprising a repeating unit derived from an aromatic vinyl compound as a main component, the polymer block comprising a repeating unit derived from a linear conjugated diene compound as a main component, and a ratio (wA:wB) of a weight fraction wA of the polymer block in the block copolymer to a weight fraction wB of the polymer block in the block copolymer being 30:70 to 60:40. The laminated glass may employ a block copolymer hydrogenation product comprising an alkoxysilyl group and excellent light-fastness, heat resistance, moisture resistance and transparency. 1. Laminated glass obtained by integrally bonding glass sheets through an adhesive , the adhesive comprising a hydrogenated block copolymer obtained by introducing an alkoxysilyl group into a hydrogenated block copolymer that is obtained by hydrogenating 90% or more of unsaturated bonds of a block copolymer that comprises at least two polymer blocks and at least one polymer block , the polymer block comprising a repeating unit derived from an aromatic vinyl compound as a main component , the polymer block comprising a repeating unit derived from a linear conjugated diene compound as a main component , and a ratio (wA:wB) of a weight fraction wA of the polymer block in the block copolymer to a weight fraction wB of the polymer block in the block copolymer being 30:70 to 60:40.2. The laminated glass according to claim 1 , wherein the adhesive further comprises a hindered amine-based light stabilizer in an amount of 0.02 to 2.5 parts by weight based on 100 parts by weight of the hydrogenated block copolymer.3. The laminated ...

High flow, hydrogenated styrene-butadiene-styrene block copolymers and applications

The invention relates to unique applications for the novel high melt flow, low viscosity, selectively hydrogenated styrene-butadiene-styrene (hSBS) or selectively hydrogenated controlled distribution styrene-butadiene/styrene-styrene (hSBSS) block copolymers, wherein the melt flow rate of said block copolymer is at least 100 g/10 min at 230° C. under 2.16 kg mass according to ASTM D1238. These block copolymers are novel and have the highest melt flow rate of any styrenic block copolymer also possessing high strength and elasticity. It has applications that prior to the present invention were not normally possible due to the normal low melt flow rate of styrenic block copolymers. The present invention also encompasses various fields of use such as a fiberglass hSBS or hSBSS reinforced mat, low viscosity hSBS or hSBSS coatings for industrial uses, hot melt adhesives prepared from hSBS or hSBSS blended with polyalpha-olefins, and elastic film, fiber, and nonwoven constructions using hSBS or hSBSS.

HOT MELT ADHESIVES AND DISPOSABLE PRODUCTS USING THE SAME

The present invention provides hot melt adhesives. A hot melt adhesive according to the present invention contains a styrenic block copolymer (A) containing a styrene-butadiene-styrene block copolymer (A1); and at least one styrenic block copolymer (A4) selected from the group consisting of a styrene-butadiene-styrene block copolymer (A2) and a styrene-isoprene-styrene block copolymer (A3), wherein the styrenic block copolymer (A) contains a predetermined amount of the styrene-butadiene-styrene block copolymer (A1) relative to the total amount of the styrene-butadiene-styrene block copolymer (A1) and the styrenic block copolymer (A4); a tackifier (B); and a plasticizer (C), wherein the hot melt adhesive has a melt viscosity of 6000 mPa s or lower. 1. A hot melt adhesive comprising:100 parts by mass of a styrenic block copolymer (A), the styrenic block copolymer (A) comprisinga styrene-butadiene-styrene block copolymer (A1) having styrene content of 40-50% by mass and a viscosity in a 25% toluene solution of 100-300 mPa s, andat least one styrenic block copolymer (A4) selected from the group consisting of a styrene-butadiene-styrene block copolymer (A2) having a styrene content of 15-40% by mass and a viscosity in a 25% toluene solution of 300-3500 mPa s, and a styrene-isoprene-styrene block copolymer (A3), wherein(A1) is 30-70% by mass of the total amount of the styrene block copolymers (A1)plus(A4) ;100-400 parts by mass of a tackifier (B); anda plasticizer (C); whereinthe hot melt adhesive has a melt viscosity of 6000 mPa s or lower at 120° C.2. The hot melt adhesive according to claim 1 , wherein the tackifier (B) comprises 10-100 parts by mass of a fully hydrogenated tackifier (B1) having a ring-and-ball softening point of 100° C. or lower claim 1 , relative to 100 parts by mass of the styrenic block copolymer (A).3. The hot melt adhesive according to claim 1 , wherein the tackifier (B) comprises an end-block tackifier (B2) having a ring-and-ball softening point ...

Crumb of Block Copolymer and Pressure-Sensitive Adhesive Composition

There is provided a crumb of a block copolymer, which is excellent in transportability and, when used for a pressure-sensitive adhesive composition, is capable of forming a pressure-sensitive adhesive composition excellent in solubility, the low-melt viscosity property, the low-odor property, and the balance among these properties. The present invention relates to a crumb of a block copolymer, comprising at least one polymer block comprising a vinyl aromatic hydrocarbon monomer unit as a primary component and at least one polymer block comprising a conjugated diene compound monomer unit as a primary component, having a weight-average molecular weight of 20,000 to 1,000,000, and having a specific surface area, a cumulative pore volume of pores having a pore radius of 1 μm to 100 μm, and an average pore radius that are in respective predetermined ranges. 1. A crumb of a block copolymer , whereinthe copolymer comprises at least one polymer block comprising a vinyl aromatic hydrocarbon monomer unit as a primary component and at least one polymer block comprising a conjugated diene compound monomer unit as a primary component, and has a weight-average molecular weight of 20,000 to 1,000,000, andthe crumb satisfies requirements (a) to (c) below:{'sup': 2', '2, '(a) a specific surface area is 0.000001 m/g or larger and smaller than 0.3 m/g;'}(b) a cumulative pore volume of pores having a pore radius of from 1 μm to 100 μm is 0.05 mL/g or larger and smaller than 1.0 mL/g; and(c) an average pore radius is 0.00001 μm or larger and 1.5 μm or smaller.2. The crumb of a block copolymer according to claim 1 , wherein the specific surface area is 0.000001 m/g or larger and 0.2 m/g or smaller.3. The crumb of a block copolymer according to claim 1 , wherein the average pore radius is 1.0 μm or smaller.4. The crumb of a block copolymer according to claim 1 , wherein a value obtained by dividing a maximum value of a log differential pore intrusion volume at a pore radius of 1 μm or ...

Modified hydrocarbon resin and hot melt adhesive composition

Provided is a modified hydrocarbon resin that provides a hot melt adhesive composition with low odor, excellent heat stability, and high adhesive properties. The modified hydrocarbon resin is obtained by hydrogenating a hydrocarbon resin comprising a plurality of specific monomeric unit in a specific range, and characterized in that: a degree of hydrogenation of the olefins, a degree of hydrogenation of the aromatic rings, a weight average molecular weight (Mw), a Z-average molecular weight (Mz), a ratio (Mz/Mw) of the Z-average molecular weight to the weight-average molecular weight, a Gardner color scale of a toluene solution of 50 mass %, and a difference between pre-hydrogenation and post-hydrogenation mixed aniline point (MMAP) are within the specific range.

A COATED SUBSTRATE AND ARTICLES MADE THEREFROM

A coated substrate which includes a) a fabric substrate layer; b) an adhesive layer which is formed from a first composition comprising a thermoplastic elastomer and an anhydride and/or carboxylic acid functionalized, chlorinated olefin-based polymer that has a chlorine content from 1 to 20 wt %, based on the total weight of the anhydride and/or carboxylic acid functionalized, chlorinated olefin-based polymer and the thermoplastic elastomer; and c) a non-polar olefin-based layer formed from a second composition comprising at least one non-polar olefin-based polymer is provided. Also provided are an adhesive composition and articles comprising the coated substrate. 1. A coated substrate comprising:a) a fabric substrate layer;b) an adhesive layer which is formed from a first composition comprising a thermoplastic elastomer and an anhydride and/or carboxylic acid functionalized, chlorinated olefin-based polymer that has a chlorine content from 1 to 20 wt %, based on the total weight of the anhydride and/or carboxylic acid functionalized, chlorinated olefin-based polymer and the thermoplastic elastomer; andc) a non-polar olefin-based layer formed from a second composition comprising at least one non-polar olefin-based polymer.2. A coated substrate comprising:a) a fabric substrate layer;b) an adhesive layer which is formed from a first composition comprising a thermoplastic elastomer and an anhydride and/or carboxylic acid functionalized, chlorinated olefin-based polymer that has a chlorine content from 10 to 35 wt %, based on the total weight of the anhydride and/or carboxylic acid functionalized, chlorinated olefin-based polymer; andc) a non-polar olefin-based layer formed from a second composition comprising at least one non-polar olefin-based polymer.3. The coated substrate of wherein the fabric substrate layer is a woven polymeric material.4. The coated substrate of wherein the adhesive layer is formed from a first composition which further comprises a non-aromatic ...

HYDROGENATED BLOCK COPOLYMER, RESIN COMPOSITION, PRESSURE-SENSITIVE ADHESIVE, ADHESIVE, MOLDED OBJECT, LIQUID-PACKAGING CONTAINER, MEDICAL TOOL, MEDICAL TUBE, CORNER MEMBER FOR WEATHER SEAL, AND WEATHER SEAL

Provided are a hydrogenated block copolymer capable of giving a resin composition having good moldability and sufficient mechanical strength and excellent in flexibility, kink resistance and transparency and also excellent in pressure sensitive adhesiveness, adhesiveness and weather resistance, and a resin composition containing the hydrogenated block copolymer, as well as a pressure sensitive adhesive, an adhesive, a molded article, a liquid-packaging container, a medical tool, a medical tube, a corner member for weather seal, and a weather seal that are produced using these. Specifically, the hydrogenated block copolymer is a hydrogenated block copolymer prepared by hydrogenating a block copolymer that contains at least a polymer block (A) consisting mainly of a structural unit derived from an aromatic vinyl compound, and a polymer block (B) consisting mainly of a structural unit derived from isoprene, a structural unit derived from butadiene, or a structural unit derived from a mixture of isoprene and butadiene, wherein the content of the polymer block (A) is 1% by mass or more and less than 5% by mass relative to the total amount of the hydrogenated block copolymer, the total content of the 1,2-bond and the 3,4-bond of the polymer block (B) is 30 to 85 mol %, the hydrogenation rate of the polymer block (B) is 80 mol % or more, and the weight average molecular weight of the hydrogenated block copolymer is 150,000 to 800,000. 128-: (canceled)29: A resin composition comprising (a) a hydrogenated block copolymer , and (b) a polyolefinic resin , wherein: (a) the hydrogenated block copolymer is prepared by hydrogenating a block copolymer that comprises at least a polymer block (A) consisting mainly of a structural unit derived from an aromatic vinyl compound, and a polymer block (B) consisting mainly of a structural unit derived from isoprene, a structural unit derived from butadiene, or a structural unit derived from a mixture of isoprene and butadiene, and is a ...

Sealing element compositions having biorenewable content

Thermoplastic elastomer compositions, in particular derived from one or more styrenic block copolymers, a relatively high molecular weight isobutylene-containing (co)polymer, and a biorenewable processing aid. The isobutylene-containing (co)polymer imparts desirable oxygen barrier performance to the composition and the biorenewable processing aid acts as a barrier synergist as well as a processing aid useful during compounding. Low oxygen permeability sealing elements can be formed from the compositions. Processes for preparing the compositions and sealing elements are disclosed.

PLASMA TREATMENT FOR MULTILAYER ADHESIVE BONDING ELEMENT

Method for bonding by wrapping a medium which is capable of expanding transversely to a winding with an adhesive tape, in which: 1. Method for bonding by wrapping a medium which is capable of expanding transversely to a winding with an adhesive tape , in which:an adhesive tape is unrolled from an adhesive tape roll,{'b': '1', 'the unrolled adhesive tape is provided on one side of a carrier film ()'}{'b': 2', '3, 'with an adhesive cement layer () and on an opposite side with a separating agent layer (),'}{'b': '3', 'the separating agent layer () is subjected to a plasma treatment,'}{'b': '2', 'the plasma-treated adhesive tape is wound around the medium which is capable of expanding transversely to a winding, so that at least a portion of the adhesive tape is bonded to the adhesive cement layer () on a lower winding ply.'}2. Method according to claim 1 ,wherein the adhesive tape is wound around the medium in several winding plies which are bonded one on top of the other.3. Method according to claim 1 ,wherein the adhesive tape is furnished with at least one filament, which increases its tensile strength.4. Method according to claim 1 ,{'b': '3', 'wherein a separating agent in the separating agent layer () is selected from the group consisting of: surfactant release systems based on long-chain alkyl groups such as stearyl sulfosuccinates or stearyl sulfosuccinamates; polymers which may be selected from the group consisting of polyvinylstearyl carbamates, polyethylene imine stearyl carbamides, chromium complexes of C14-C28 fatty acids and stearyl copolymers or based on acrylic polymers with perfluorinated alkyl groups; silicones or fluorosilicone compounds.'}5. Method according to claim 1 ,{'b': '2', 'wherein an adhesive cement of the adhesive cement layer () is selected from the group consisting of adhesive cements based on natural or synthetic rubber and silicone adhesive cements.'}6. Method according to claim 1 ,wherein air, carbon dioxide, inert gas, nitrogen or ...

Pressure-sensitive adhesive sheet

Provided is a PSA sheet comprising a fabric sheet and a PSA layer laminated on the fabric sheet. The PSA layer comprises a base polymer and a tackifier resin. The base polymer is a block copolymer of a monovinyl-substituted aromatic compound and a conjugated diene compound. The PSA layer has a thickness greater than 100 μm and less than 190 μm.

Curable pressure-sensitive adhesive strip based on vinylaromatic block copolymer

The invention relates to a pressure-sensitive adhesive strip containing at least one layer SK1 of a self-adhesive composition based on vinylaromatic block copolymer and containing tackifying resin, wherein the vinylaromatic block copolymer 1. A pressure-sensitive adhesive strip containing at least one layer SK1 of a self-adhesive composition based on vinylaromatic block copolymer and containing tackifying resin , wherein the vinylaromatic block copolymercontains at least one polymer block A formed predominantly by polymerization of vinylaromatics, andsimultaneously contains at least one polymer block B formed predominantly by polymerization of conjugated dienes, where the proportion of 1,2-bonded conjugated diene in the B block is less than 30% by weight.3. The pressure-sensitive adhesive strip according to claim 1 , whereinthe self-adhesive composition of layer SK1 is foamed.4. The pressure-sensitive adhesive strip of claim 2 , wherein{'sup': '3', 'the absolute density of the self-adhesive composition layer SK1 is 400 to 990 kg/m.'}5. The pressure-sensitive adhesive strip according to claim 1 , whereinthe vinylaromatic block copolymer is a mixture of linear block copolymers which comprise a mixture of diblock copolymers (A-B) and triblock copolymers (A-B-A), where the vinylaromatic block copolymer has a diblock copolymer content of 30% to 60% by weight.6. The pressure-sensitive adhesive strip according to claim 1 , whereinthe tackifying resin of layer SK1 comprises, to an extent of at least 75% by weight, hydrocarbon resin or terpene resin or a mixture of thereof.7. The pressure-sensitive adhesive strip according to{'claim-ref': {'@idref': 'CLM-00003', 'claim 3'}, 'according to , wherein the foamed layer SK1 comprises microballons in an amount of up to 12% by weight, based on the overall composition of the layer.'}8. A process of producing the pressure-sensitive adhesive strip of claim 1 , wherein the self-adhesive composition is processed from solution or from the ...

THERMOPLASTIC POLYMER COMPOSITION AND MOLDED ARTICLE

The present invention is a thermoplastic polymer composition which contains 10-120 parts by mass of a polar group-containing polypropylene resin (B) per 100 parts by mass of a thermoplastic elastomer (A) that is a block copolymer having a polymer block containing an aromatic vinyl compound unit and a polymer block composed of a conjugated diene unit having 40% by mole or more of 1,2-bonds and 3,4-bonds in total, or a hydrogenated product of the block copolymer (provided that a thermoplastic polymer composition containing 1 part by mass or more of a polyvinyl acetal resin is excluded). This thermoplastic polymer composition is able to be bonded with a ceramic, a metal or a synthetic resin without requiring a primer treatment, and has excellent flexibility, mechanical characteristics, moldability, heat resistance and storage stability. 111-. (canceled)12: An adhesive comprising:100 parts by mass of a thermoplastic elastomer (A) that is a polystyrene-polyisoprene-polystyrene triblock copolymer comprising (i) 13 to 30 mass % of styrene units and (ii) polyisoprene blocks having a total amount of 1,2-bonds and 3,4-bonds of 60 to 78 mol %, and25 to 60 parts by mass of a maleic anhydride modified polypropylene resin (B) per 100 parts by mass of the thermoplastic elastomer (A), the maleic anhydride modified polypropylene resin (B) having a melt flow rate of 10 to 250 g/10 min under the conditions of 230° C. and a load of 21.18N,provided that a thermoplastic polymer composition containing 1 part by mass or more of a polyvinyl acetal resin is excluded from the adhesive,wherein a polar group-containing structural unit is present in the maleic anhydride modified polypropylene resin (B) in an amount of 0.2 to 1 mass %, based on a total mass of the maleic anhydride modified polypropylene resin (B).13: The adhesive according to claim 12 , wherein the thermoplastic elastomer (A) has a weight average molecular weight (Mw) of from 70 claim 12 ,000 to 200 claim 12 ,000 claim 12 , and ...

HOT MELT ADHESIVE

The present invention provides hot melt adhesives for disposable products. The hot melt adhesives may be applied at high-speed and at low temperature ranges. The hot melt adhesives also provide excellent adhesion to polyethylene and a nonwoven fabric. The hot melt adhesive comprises (A) a thermoplastic block copolymer, which is a copolymer of a vinyl-based aromatic hydrocarbon with a conjugated diene compound; and (B) a propylene homopolymer having a melting point of 100° C. or lower, which is obtainable by polymerizing propylene using a metallocene catalyst. The disposable products are produced at high-speeds and low temperature with the inventive hot melt, and therefore, the disposal products are produced efficiently and safely, and a nonwoven fabric and a polyethylene film of the disposable products are less likely to peel. 1. A hot melt adhesive comprising:(A) a thermoplastic block copolymer that is a copolymer of a vinyl-based aromatic hydrocarbon with a conjugated diene compound; and(B) a propylene homopolymer having a melting point of 100° C. or lower that is prepared by polymerizing propylene with a metallocene catalyst.2. The hot melt adhesive according to claim 1 , wherein the vinyl-based aromatic hydrocarbon is selected from the group consisting of styrene claim 1 , o-methylstyrene claim 1 , p-methylstyrene claim 1 , p-tert-butylstyrene claim 1 , 1 claim 1 ,3-dimethylstyrene claim 1 , α-methylstyrene claim 1 , vinylnaphthalene claim 1 , vinylanthracene claim 1 , and mixtures thereof.3. The hot melt adhesive according to claim 2 , wherein the vinyl-based aromatic hydrocarbon is styrene4. The hot melt adhesive according to claim 1 , wherein the conjugated diene is selected from the group consisting of 1 claim 1 ,3-butadiene claim 1 , 2-methyl-1 claim 1 ,3-butadiene (or isoprene) claim 1 , 2 claim 1 ,3-dimethyl-1 claim 1 ,3-butadiene claim 1 , 1 claim 1 ,3-pentadiene claim 1 , 1 claim 1 ,3-hexadiene claim 1 , and mixtures thereof.5. The hot melt adhesive ...

THERMOPLASTIC RESIN COMPOSITIONS, ADHESIVE COATING MATERIALS, AND LAMINATES USING THE SAME

Provided is a thermoplastic resin composition or an adhesive coating material capable of adhering a cyclic polyolefin-based polymer with a metal or metal compound such as aluminum foil or an ethylene-vinyl alcohol copolymer with sufficient strength. The thermoplastic resin composition contains (A) 100 parts by mass of thermoplastic resin; (B) 0.05 to 5 parts by mass of one or more kinds selected from the group consisting of an unsaturated carboxylic acid and an unsaturated carboxylic acid derivative; and (C) 0.01 to 3 parts by mass of organic peroxide; which component (A) contains (a1) 10 to 90% by mass cyclic polyolefin-based polymer; and (a2) 90 to 10% by mass a hydrogenated product of a block copolymer comprising a polymer block composed mainly of an aromatic vinyl compound and a random copolymer block of a conjugated diene compound and an aromatic vinyl compound (with the proviso that the total of the component (a1) and the component (a2) is 100% by mass). 1. A thermoplastic resin composition comprising:(A) 100 parts by mass of thermoplastic resin;(B) 0.05 to 5 parts by mass of one or more kinds selected from the group consisting of an unsaturated carboxylic acid and an unsaturated carboxylic acid derivative; and(C) 0.01 to 3 parts by mass of organic peroxide; (a1) 10 to 90% by mass cyclic polyolefin-based polymer; and', '(a2) 90 to 10% by mass a hydrogenated product of a block copolymer comprising a polymer block composed mainly of an aromatic vinyl compound and a random copolymer block of a conjugated diene compound and an aromatic vinyl compound (with the proviso that the total of the component (a1) and the component (a2) is 100% by mass)., 'the component (A) comprising2. The thermoplastic resin composition according to claim 1 , wherein the component (a1) is a copolymer of a cyclic olefin and an α-olefin having 2 to 8 carbon atoms.3. A method of producing a thermoplastic resin composition claim 1 , the method comprising melt kneading a composition comprising ...

System and Method for Dispensing Hot Melt Adhesives

A system for dispensing hot melt adhesives, comprising an adhesive dispenser including a fluid passage leading to an outlet. The system further comprises a supply conduit fluidly connected to the fluid passage and a feeding mechanism configured to feed an elongate, flexible element of solid adhesive into the supply conduit. The system further comprises a first heating element positioned along at least a portion of the supply conduit to melt a portion of the elongate, flexible element being fed into the supply conduit and thereby form a supply of liquid adhesive within the supply conduit. 1. A system for dispensing hot melt adhesives , comprising:an adhesive dispenser comprising a fluid passage leading to an outlet;a supply conduit fluidly connected to the fluid passage;a feeding mechanism configured to feed an elongate, flexible element of solid hot melt adhesive into the supply conduit;a first heating element positioned along at least a portion of the supply conduit to melt a portion of the elongate, flexible element being fed into the supply conduit and thereby form a supply of liquid adhesive within the supply conduit; anda valve member mounted for movement between open and closed positions within the fluid passage, wherein the valve member allows fluid pressure to build in the system when the valve member is in the closed position.2. The system of claim 1 , wherein the first heating element further comprises:a heater cable wrapped about at least a portion of the supply conduit.3. The system of claim 1 , further comprising:a heat exchange device comprising a second heating element between the supply conduit and the fluid passage, the heat exchange device configured to heat the liquid adhesive to an application temperature suitable for an adhesive bonding application.4. The system of claim 3 , further comprising:a manifold between the heat exchange device and the adhesive dispenser, the manifold comprising a third heating element configured to maintain the liquid ...

HOT MELT ELASTIC ATTACHMENT ADHESIVE FOR LOW TEMPERATURE APPLICATIONS

An adhesive composition comprising: one or more block copolymers and one or more tackifying resins, wherein said one or more block copolymers comprise (i) one or more blocks of polymerized alkenyl arene monomer (A block), (ii) one or more blocks of polymerized conjugated diene monomer (B block), and optionally at least one low molecular weight (compared to B block) block of polymerized conjugated diene (C block), where the A, B, and C blocks can vary independent of each other with regard to composition and molecular weight. 1. An adhesive composition comprising: one or more block copolymers and one or more tackifying resins , wherein said one or more block copolymers comprise (i) one or more blocks of polymerized alkenyl arene monomer (A block) , (ii) one or more blocks of polymerized conjugated diene monomer (B block) , and optionally at least one low molecular weight (compared to B block) block of polymerized conjugated diene (C block) , where the A , B , and C blocks can vary independent of each other with regard to composition and molecular weight.2. The adhesive composition of wherein the block copolymer has a structure selected from the group A-B-A; (AB)X claim 1 , A-B-A-C claim 1 , C-A-B-A-C claim 1 , (C-A-B)X claim 1 , (A-B)X(C) claim 1 , and (C-A-B)X(C)where n and/or m is from 2 to 20 claim 1 , X is a coupling agent and the sum of n+m cannot be greater than the valence of the coupling agent.3. The adhesive composition of claim 1 , wherein the alkenyl arene monomer is styrene claim 1 , alpha-methylstyrene claim 1 , para-methylstyrene claim 1 , vinyl toluene claim 1 , vinyl naphthalene claim 1 , para-butyl styrene or combinationscombinations thereof.4. The adhesive composition of claim 3 , wherein the alkenyl arene monomer is styrene.5. The adhesive composition of claim 1 , wherein the conjugated diene monomer is 1 claim 1 ,3-butadiene claim 1 , a substituted butadiene claim 1 ,isoprene claim 1 , piperylene claim 1 , 2 claim 1 ,3-dimethyl-1 claim 1 ,3- ...

STABILIZATION OF HOT MELT ADHESIVES

The present invention pertains to a stabilized hot melt adhesive containing a) one or more hot melt adhesive materials and b) a stabilizer composition. The one or more hot melt adhesive materials a) include a polyolefin, a styrene-isoprene-styrene block co-polymer, a styrene-butadiene-styrene block co-polymer, a polyacrylate, an acryl-copolymer, an ethylene vinyl acetate, a polyamide, a polyester, a polyurethane, a polyimide, a silane terminated polyolefin, a silane terminated poly-ether, and a silane terminated polyurethane. The stabilizer composition includes a component (B), which is a polymeric sterically hindered amine, and a component (C), which is a specific sterically hindered phenol. 23-. (canceled)4: The stabilized hot melt adhesive according to claim 1 , wherein the stabilizer composition consists of components (B) and (C).5: The stabilized hot melt adhesive according to claim 1 , wherein a weight ratio between components (B) and (C) is between 1:5 and 5:1.69-. (canceled)14: The stabilized hot melt adhesive according to claim 1 , wherein the stabilizer composition further comprises:one or more additives selected from the group consisting of a phosphite, a thioether, a secondary arylamine, a hydroxyl-amine based stabilizer, a UV-absorber, and an inorganic stabilizer.17: The stabilized hot melt adhesive according to claim 16 , wherein the stabilizer composition consists of components (B) and (C).18: The stabilized hot melt adhesive according to claim 16 , wherein a weight ratio between components (B) and (C) is between 1:5 and 5:1.23: The stabilized hot melt adhesive according to claim 16 , wherein the stabilizer composition further comprises:one or more additives selected from the group consisting of a phosphite, a thioether, a secondary arylamine, a hydroxyl-amine based stabilizer, a UV-absorber, and an inorganic stabilizer.25: The stabilized hot melt adhesive according to claim 1 , wherein the hot melt adhesive comprises a polyolefin claim 1 , and ...

Tackifier and hot melt adhesive composition

A tackifier (B) according to the present invention comprises a copolymer (C) that comprises a structural unit derived from α-methylstyrene or isopropenyltoluene and a structural unit derived from styrene, and the copolymer (C) satisfies the following (i) to (iii): (i) a content of the structural unit derived from α-methylstyrene or isopropenyltoluene is in the range of 30 to 70 mol %, (ii) a softening temperature (Tm) measured by the ring-and-ball method according to JIS K 2207 is in the range of 110° C. to 170° C., and (iii) a content of a fraction having molecular weight of not more than 350, as determine by gel permeation chromatography (GPC) and calculated from polystyrene standard, is less than 1.5 mass %.

HOT-MELT ADHESIVE AND USE THEREOF

The present invention relates to the use of a hot-melt adhesive for adhesive bonding of at least a first packaging and a second packaging, the hot-melt adhesive comprising: (a) 7-70 parts per weight, preferably 20-60 parts by weight, more preferred 30-50 parts per weight, even more preferred 35-45 parts by weight, of a polymer component, the polymer component comprising a first styrene block copolymer and a second styrene block copolymer, the first styrene block copolymer and the second styrene block copolymer having a different styrene content, (b) 15-60 parts per weight, preferably 25-50 parts per weight, even more preferred 35-45 parts per weight, of a tackifying component; (c) 5-30 parts per weight, preferably 5-25 parts per weight, of a plasticizer component; and d) 0.02-1.2 parts per weight of a stabilizer component. 1. Use of a hot-melt adhesive for adhesive bonding of at least a first packaging and a second packaging , the hot-melt adhesive comprising:(a) 7-70 parts per weight, preferably 20-60 parts by weight, more preferred 30-50 parts per weight, even more preferred 35-45 parts by weight, of a polymer component, the polymer component comprising a first styrene block copolymer and a second styrene block copolymer, the first styrene block copolymer and the second styrene block copolymer having a different styrene content;(b) 15-60 parts per weight, preferably 25-50 parts per weight, even more preferred 35-45 parts per weight, of a tackifying component;(c) 5-30 parts per weight, preferably 5-25 parts per weight, of a plasticizer component; and(d) 0.02-1.2 parts per weight of a stabilizer component.2. Use according to claim 1 , wherein the packaging is a foodstuff packaging claim 1 , preferably a foodstuff container claim 1 , more preferably a bottle or a can claim 1 , most preferably a plastic bottle.3. Use according to claim 1 , wherein the polymer component further comprises an alpha-alkyl styrene claim 1 , preferably an alpha-C1-C4-alkyl styrene claim 1 , ...

PRESSURE-SENSITIVE ADHESIVE COMPOSITION AND PRESSURE-SENSITIVE ADHESIVE SHEET

This invention provides a PSA composition comprising a base polymer and a tackifier resin. The base polymer is a block copolymer of a monovinyl-substituted aromatic compound and a conjugated diene compound. The tackifier resin comprises a tackifier resin Thaving a softening point of 120° C. or above. The tackifier resin Tcomprises a tackifier resin Thaving an aromatic ring while having a hydroxyl value of 30 mgKOH/g or lower. 1. A pressure-sensitive adhesive composition comprising a base polymer and a tackifier resin , whereinthe base polymer is a block copolymer of a monovinyl-substituted aromatic compound and a conjugated diene compound,{'sub': 'H', 'the tackifier resin comprises a tackifier resin Thaving a softening point of 120° C. or above, and'}{'sub': H', 'HR1, 'the tackifier resin Tcomprises a tackifier resin Thaving an aromatic ring and having a hydroxyl value of 30 mgKOH/g or lower.'}2. The pressure-sensitive adhesive composition according to claim 1 , wherein the tackifier resin Tis at least one selected from the group consisting of coumarone-indene resins claim 1 , aromatic petroleum resins claim 1 , aliphatic/aromatic copolymer-based petroleum resins and styrene-based resins.3. The pressure-sensitive adhesive composition according to claim 1 , wherein the tackifier resin further comprises a tackifier resin Thaving a softening point below 120° C.4. The pressure-sensitive adhesive composition according to claim 1 , wherein the base polymer is a styrene-based block copolymer.5. The pressure-sensitive adhesive composition according to claim 4 , wherein the styrene content of the styrene-based block copolymer is 20% by mass or lower.6. The pressure-sensitive adhesive composition according to claim 4 , wherein the tackifier resin Tcontent is in a range of 0.1 to 10 parts by mass relative to 1 part by mass of styrene in the styrene-based block copolymer.7. The pressure-sensitive adhesive composition according to claim 1 , wherein the base polymer has a diblock ...

HOT-MELT ADHESIVE AND USE THEREOF

The present invention relates to the use of a hot-melt adhesive for adhesive bonding of at least a first packaging and a second packaging, the hot-melt adhesive comprising: (a) 7-48 parts per weight of a polymer component, the polymer component comprising a styrene block copolymer; (b) 15-52 parts per weight of a tackifying component, wherein the tackifying component comprises thermoplastic adhesive resin, aliphatic hydrocarbon, cycloaliphatic hydrocarbon, aromatic hydrocarbon, the respective hydrocarbon optionally being modified and/or hydrogenated, terpenes, the terpenes optionally being modified or hydrogenated, rosins, the rosins optionally being modified or hydrogenated, or mixtures thereof; (c) 5-25 parts per weight of a plasticizer component, wherein the plasticizer component comprises paraffinic oils, naphthenic oils, polybuten, polybutadien, dibasic esters, polyols or mixtures thereof; and d) 0.02-1.2 parts per weight of a stabilizer component, wherein the stabilizer component is a light stabilizer, preferably as a sterically hindered phenolic antioxidant and/or a sterically hindered amine, most preferably is pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate). 1. Use of a hot-melt adhesive for adhesive bonding of at least a first packaging and a second packaging , the hot-melt adhesive comprising:(a) 7-48 parts per weight of a polymer component, the polymer component comprising a styrene block copolymer;(b) 15-52 parts per weight of a tackifying component, wherein the tackifying component comprises thermoplastic adhesive resin, aliphatic hydrocarbon, cycloaliphatic hydrocarbon, aromatic hydrocarbon, the respective hydrocarbon optionally being modified and/or hydrogenated, terpenes, the terpenes optionally being modified or hydrogenated, rosins, the rosins optionally being modified or hydrogenated, or mixtures thereof;(c) 5-25 parts per weight of a plasticizer component, wherein the plasticizer component comprises paraffinic oils, ...

POLYMER PRE-LAID WATERPROOF ROLLING MATERIAL

A polymer pre-laid waterproof rolling material, comprising a polymer base material layer, a pressure-sensitive adhesive layer on the polymer base material layer, and a sand anti-sticking layer on the pressure-sensitive adhesive layer; the pressure-sensitive adhesive layer includes: 25-35 parts by mass of a styrene-isoprene-styrene block copolymer; 32-38 parts by mass of a C5 petroleum resin; 5-12 parts by mass of a 145 pentaerythritol modified rosin resin; 25-32 parts by mass of a naphthenic oil; 0.3 parts by mass of an antioxidant; and 0.5 parts by mass of a UV light stabilizer; the C5 petroleum resin has a softening point of 95-105° C. and a color number of less than 4; the naphthenic oil has a kinematic viscosity of 9-11 mmat 100° C. and a density of 0.8950 g/cm-0.9100 g/cmat 20° C. The pressure-sensitive adhesive layer has a stronger bonding effect with sintered sand and further improves the bonding effect with concrete. 1. A polymer pre-laid waterproof rolling material , wherein comprising a polymer base material layer , a pressure-sensitive adhesive layer on the polymer base material layer , and a sand anti-sticking layer on the pressure-sensitive adhesive layer;wherein the pressure-sensitive adhesive layer includes the following components:25-35 parts by mass of a styrene-isoprene-styrene block copolymer2;32-38 parts by mass of a C5 petroleum resin;5-12 parts by mass of a 145 pentaerythritol modified rosin resin;25-32 parts by mass of a naphthenic oil;0.3 parts by mass of an antioxidant; and0.5 parts by mass of a UV light stabilizer;{'sup': 2', '3', '3, 'the C5 petroleum resin has a softening point of 95-105° C. and a color number of less than 4; the naphthenic oil has a kinematic viscosity of 9-11 mmat 100° C. and a density of 0.8950 g/cm-0.9100 g/cmat 20° C.'}2. The polymer pre-laid waterproof rolling material according to claim 1 , wherein the melting index of the styrene-isoprene-styrene block copolymer is 10-15 g/10 min at 200° C. claim 1 , and the ...

SEALANT

A sealant including a block copolymer comprising a polymer block (a) comprising a structural unit derived from an aromatic vinyl compound and a polymer block (b) comprising 1 to 100% by mass of a structural unit (b1) derived from farnesene and 99 to 0% by mass of a structural unit (b2) derived from a conjugated diene other than farnesene, a mass ratio [(a)/(b)] of the polymer block (a) to the polymer block (b) being 5/95 to 45/55, is excellent in molding processability, flexibility, and adhesiveness and also excellent in sound insulation properties and vibration-damping properties (vibration attenuation properties) in a high frequency region in the neighborhood of 4,000 Hz even under high temperatures. 1. A sealant , comprising a block copolymer (A) comprising:a polymer block (a) comprising a structural unit derived from an aromatic vinyl compound; anda polymer block (b) comprising 1 to 100% by mass of a structural unit (b1) derived from a farnesene and 99 to 0% by mass of a structural unit (b2) derived from a conjugated diene other than the farnesene,wherein a mass ratio [(a)/(b)] of the polymer block (a) to the polymer block (b) is being 5/95 to 45/55.2. The sealant according to claim 1 , wherein a peak top molecular weight (Mp) of the block copolymer (A) determined by conversion into standard polystyrene by gel permeation chromatography is 4 claim 1 ,000 to 500 claim 1 ,000.3. The sealant according to claim 1 , wherein a loss factor of the block copolymer (A) in the range of from 40 to 80° C. under an excitation condition with a frequency of 4 claim 1 ,000 Hz is 0.07 or more.4. The sealant according to claim 1 , wherein the aromatic vinyl compound is styrene.5. The sealant according to claim 1 , wherein the farnesene is β-farnesene.6. The sealant according to claim 1 , wherein the conjugated diene other than the farnesene is at least one selected from isoprene claim 1 , butadiene claim 1 , and myrcene.7. The sealant according to claim 1 , wherein a molecular ...

HOT MELT ADHESIVE SHEET

The present invention is a hot melt adhesive sheet including an adhesive layer including a hot melt adhesive, in which the hot melt adhesive includes either a styrene-ethylene-ethylene-propylene-styrene block copolymer or a styrene-ethylene-propylene-styrene block copolymer, and a hydrogenated alicyclic hydrocarbon petroleum resin, and the hot melt adhesive sheet has a glass transition temperature falling within a range of −10° C. or more and 10° C. or less. 1. A hot melt adhesive sheet comprising an adhesive layer comprising a hot melt adhesive , whereinthe hot melt adhesive comprises either a styrene-ethylene-ethylene-propylene-styrene block copolymer or a styrene-ethylene-propylene-styrene block copolymer, and a hydrogenated alicyclic hydrocarbon petroleum resin, andthe hot melt adhesive sheet has a glass transition temperature falling within a range of −10° C. or more and 10° C. or less.2. The hot melt adhesive sheet according to claim 1 , wherein a styrene content in the styrene-ethylene-ethylene-propylene-styrene block copolymer is 15 mass % or more.3. The hot melt adhesive sheet according to claim 1 , wherein a styrene content in the styrene-ethylene-propylene-styrene block copolymer is 15 mass % or more.4. The hot melt adhesive sheet according to claim 1 , whereinthe hot melt adhesive comprises 20 mass parts or more and 80 mass parts or less of the hydrogenated alicyclic hydrocarbon petroleum resin based on 100 mass parts of either the styrene-ethylene-ethylene-propylene-styrene block copolymer or the styrene-ethylene-propylene-styrene block copolymer.5. The hot melt adhesive sheet according to claim 1 , wherein a softening point of the hydrogenated alicyclic hydrocarbon petroleum resin is 140° C. or less.6. The hot melt adhesive sheet according to claim 1 , wherein the hot melt adhesive further comprises a terpene modified phenol resin.7. The hot melt adhesive sheet according to claim 6 , wherein a softening point of the terpene modified phenol resin is 100 ...

Hydrogenated Block Copolymer, Polypropylene Resin Composition, and Molded Body

The hydrogenated block copolymer according to the present invention is a hydrogenated block copolymer containing, in the molecule, a polymer block (C) having a conjugated diene compound as a main component, a polymer block (B) having a conjugated diene compound as a main component, and a polymer block (S) having a vinyl aromatic compound as a main component.

LAYERED PRODUCT

The present disclosure is a layered product () comprising a base layer () and a pressure sensitive adhesive layer (), which is in contact with the base layer (). The base layer () comprises a (meth)acrylic resin (M), an acrylonitrile-butadiene-styrene resin, or a polyester resin. The pressure sensitive adhesive layer () contains a block copolymer (A) containing an aromatic vinyl compound polymer block (S) and a conjugated diene compound polymer block (D). The aromatic vinyl compound polymer block (S) forms a membrane structure phase () along the interface () between the base layer () and the pressure sensitive adhesive layer (). 1. A layered product , comprising:a base layer; anda pressure sensitive adhesive layer, which is in contact with the base layer,wherein the base layer comprises a (meth)acrylic resin, an acrylonitrile-butadiene-styrene resin, or a polyester resin,the pressure sensitive adhesive layer comprises a block copolymer comprising an aromatic vinyl compound polymer block and a conjugated diene compound polymer block, andthe aromatic vinyl compound polymer block forms a membrane structure phase along an interface between the base layer and the pressure sensitive adhesive layer.2. The layered product according to claim 1 ,wherein the aromatic vinyl compound polymer block further forms a circular cross section structure phase, andthe pressure sensitive adhesive layer has a region in which the circular cross section structure phase is scarce along the membrane structure phase.3. The layered product according to claim 1 ,wherein the pressure sensitive adhesive layer comprises greater than 50 mass % of the block copolymer.4. The layered product according to claim 1 , wherein a vinylation degree of the conjugated diene compound polymer block is 40 mol % or more in the block copolymer.5. The layered product according to claim 1 , wherein the block copolymer comprises from 5 to 40 mass % of the aromatic vinyl compound polymer block and from 60 to 95 mass % of ...

Blended block copolymer/silicone pressure sensitive adhesives

There is provided a pressure sensitive adhesive demonstrating adhesion to low energy surfaces which is a radiation-crosslinked mixture of a first component comprising a blend of a nonfunctionalized polysiloxane and a silicate-based tackifier; and a second component comprising a blend of a styrenic block copolymer and a tackifier compatible with the styrenic block copolymer. In some embodiments the weight ratio of nonfunctionalized polysiloxane to styrenic block copolymer.in the mixture is between 0.20 and 1.15. In some embodiments the tackifier compatible with the styrenic block copolymer is a blend of hydrogenated hydrocarbon resin tackifier and terpene-based tackifier in a weight ratio of greater than 0.75 hydrogenated hydrocarbon resin tackifier to terpene-based tackifier.