УДАРОПРОЧНАЯ ПОЛИОЛЕФИНОВАЯ КОМПОЗИЦИЯ, СПОСОБ ЕЕПОЛУЧЕНИЯ И ИЗДЕЛИЕ, СОДЕРЖАЩЕЕ УКАЗАННУЮ КОМПОЗИЦИЮ

Изобретение относится к полиолефиновой композиции, способу ее получения и к изделиям, содержащим полиолефиновую композицию, таким как игрушки, посуда, контейнеры для продуктов питания. Композиция содержит от 55 до менее чем 70 мас.% кристаллического пропиленового гомополимера или сополимера, содержащего до 15% этилена и/или С4 -С10 α-олефина (олефинов), имеющего значение скорости течения расплава, определенное при 230°С и нагрузке 2,16 кг, в диапазоне от 15 до 80 г/10 мин, и от более чем 30 до 45 мас.% сополимера этилена и одного или нескольких С4-С10 α-олефина (олефинов), содержащего 15-40% С4-С10 α-олефина (олефинов). Композиция имеет значение скорости течения расплава, определенное при 230°С и нагрузке 2,16 кг, равное или больше 15 г/10 мин, полное содержание этилена, равное 20% или более, полное содержание С4 -С10 α-олефина (олефинов), равное 6% или более, соотношение полного содержания этилена и полного содержания С4-С10 α-олефина (олефинов), равное 2,3 или более, содержание совокупной ...

КАТАЛИТИЧЕСКАЯ СИСТЕМА, ПРЕДНАЗНАЧЕННАЯ ДЛЯ ПОЛИМЕРИЗАЦИИ ОЛЕФИНА, И ЕЕ ПРИМЕНЕНИЕ

Настоящее изобретение относится к области нефтехимической технологии и, в частности, оно относится к каталитической системе, предназначенной для полимеризации олефина, и к способу полимеризации олефина. Описана каталитическая система, предназначенная для полимеризации олефина, включающая основной катализатор и сокатализатор, где сокатализатор включает содержащее 12-членное кольцо соединение, описывающееся формулой (М), где в формуле (М) R1-R16 являются одинаковыми или разными, все независимо выбраны из группы, состоящей из следующих: водород, гидроксигруппа, галоген, цианогруппа, нитрогруппа, аминогруппа, аминная группа, альдегидная группа, карбоксигруппа, кетонная группа, алкоксигруппа и гидрокарбил, и где две соседние группы, содержащиеся в бензольном кольце, все выбраны из группы, состоящей из следующих: алкоксигруппа и гидрокарбил, две соседние группы вместе необязательно могут образовывать кольцо, кольцо выбрано из группы, состоящей из следующих: насыщенное или ненасыщенное моноциклическое ...

СПОСОБ ПОЛИМЕРИЗАЦИИ

Изобретение относится к катализаторам полимеризации олефинов и к их применению в газовой или суспензионной фазе при получении полиолефинов. Описан способ полимеризации, включающий объединение в газовой фазе при температуре реактора от 60°С до 115°С или в суспензионной фазе, такой как полимеризация с продуктом в порошкообразной форме при температуре 85°С-110°С олефина и гексена-1 или бутена-1 с активатором, носителем и каталитическим соединением, отвечающим следующей формуле: в которой М обозначает цирконий или гафний, Х обозначает атом водорода, атом галогена или гидрокарбил, n обозначает степень окисления М, m обозначает формальный заряд лиганда YZL, Y, Z обозначает атом элемента группы 15, L обозначает атом элемента группы 15 или 16, R1 и R2 каждый независимо обозначает С1-С20алкильную группу, R3 отсутствует или обозначает атом водорода, R4 и R5 каждый независимо обозначает арильную группу или замещенную С1-С20 алкилом арильную группу, R6 и R7 каждый независимо отсутствует или обозначает ...

ПОЛИМЕРЫ НА ОСНОВЕ ОЛЕФИНА И АЛКЕНИЛАЛКИЛАТА И ИХПРИМЕНЕНИЕ В КАЧЕСТВЕ МНОГОФУНКЦИОНАЛЬНЫХ ДОБАВОКВ ТОПЛИВО И ГОРЮЧЕЕ

Изобретение относится к полимерам на основе олефина и алкенилалкилата, к способам их получения, к их применению и к композиции, содержащей эти полимеры. Полимер имеет молекулярный вес от 500 до 25000 г/моль и содержит, по меньшей мере, одно звено формулы (I): где R1, R′1 и R"1 одинаковые или разные, выбраны из водорода и алкильных радикалов, содержащих от 1 до 10 атомов углерода; R2 выбран из водорода, алкильных радикалов, содержащих от 1 до 20 атомов углерода, ароматических радикалов, имеющих от 6 до 10 атомов углерода, или группы OR′2, где R′2 является водородом или алкильной группой, содержащей от 1 до 6 атомов углерода, причем подразумевается, что R1 и R2 не могут одновременно быть атомом водорода; где G и G′ одинаковые или разные, выбраны из карбонильных групп -О-С(О)-; -С(О)-О-; -С(О)-; R3 выбран из алкильных радикалов, содержащих от 1 до 13 атомов углерода; R5 и R6 одинаковые или разные, выбраны из водорода, алкильных радикалов, содержащих от 1 до 13 атомов углерода или вместе образуют ...

СНИЖАЮЩИЙ СОПРОТИВЛЕНИЕ ТЕКУЧЕСТИ ПОЛИОЛЕФИН, СПОСОБ ЕГО ПОЛУЧЕНИЯ (ВАРИАНТЫ) И СОСТАВ НА ЕГО ОСНОВЕ

Предлагается растворимая в углеводородах, снижающая сопротивление текучести суспензия, а также способ ее получения. Способ направлен на получение снижающего сопротивление текучести продукта, который легко транспортируем, не опасен, удобен в обращении и обеспечивает значительное увеличение способности снижения сопротивления текучести по сравнению с существующими промышленными продуктами. Предпочтительно, чтобы суспензия была по существу без растворителя. 4 с. и 6 з.п.ф-лы, 7 табл., 2 ил.

СПОСОБ ПОЛУЧЕНИЯ ЛИНЕЙНЫХ ПОЛИКЕТОНОВ

Использование изобретения: получение линейных поликетонов - чередующихся сополимеров олефинов с моноокисью углерода. Сущность изобретения: проводят сополимеризацию олефинов с моноокисью углерода в среде разбавителя при повышенных температуре и давлении. Каталитическая система включает катализатор и кислоту с РК менее 2. Катализатор - комплекс соли монокарбоновой кислоты и палладия с фосфорсодержащим биценгатным лигандом. Начало пускового периода сополимеризации проводят в присутствии суспензии линейного чередующегося сополимера этилена с моноокисью углерода в разбавителе с концентрацией предподчтительно, 13,0 - 27,4 мас.%. Скорость подачи катализатора в начале пускового периода поддерживают постоянной и равной скорости подачи катализатора в стационарном периоде либо более высокой, постепенно снижая ее до равной скорости подачи в стационарном периоде. Суспензию чередующегося сополимера этилена с моноокисью углерода подают в готовом виде или получают непосредственно в реакторе сополимеризации ...

КАТАЛИТИЧЕСКАЯ КОМПОЗИЦИЯ ДЛЯ СОПОЛИМЕРИЗАЦИИ ОКИСИ УГЛЕРОДА С АЛЬФА-ОЛЕФИНАМИ И СПОСОБ ПОЛУЧЕНИЯ СОПОЛИМЕРОВ ОКИСИ УГЛЕРОДА С АЛЬФА-ОЛЕФИНАМИ

Использование: для получения пластмасс. Сущность: проводят сополимеризацию олефинов с окисью углерода на каталитической композиции, состоящей из соли паладия и карбоновой кислоты, кислоты с РКа менее 4, бисфосфина и органического растворителя. Бисфосфин имеет формулу R2P-CH2-CH(R')-CH2-PR2, где R-2-алкоксифенил, R'-алкилгидроксиалкил, бензил, бензилокси или триалкилбензилокси. 2 с. п. ф-лы.

СПОСОБ ПОЛУЧЕНИЯ ЭТИЛЕН-ПРОПИЛЕНОВЫХ СОПОЛИМЕРОВ

Изобретение относится к области получения материалов, применяемых в качестве депрессорных присадок к топливам и маслам, в качестве пластификаторов в составе композиций строительных и авиационных герметиков. Высокомолекулярный каучук разогревают за счет диссипации в нем механической энергии и подвергают термической деструкции в условиях интенсивной сдвиговой деформации при скоростях сдвига 2500-5000 с-1. Процесс проводят в непрерывном режиме. Технический результат - получение этилен-пропиленовых сополимеров в широком диапазоне молекулярных масс, простота способа и легкость его моделирования по производительности в широких пределах, возможность использования некондиционного исходного каучука. 1 табл.

ФТОРЭЛАСТОМЕРНЫЙ СОПОЛИМЕР И СШИТЫЙ ФТОРЭЛАСТОМЕРНЫЙ СОПОЛИМЕР

Использование: для получения фторэластомерных сополимеров (СПЛ) на основе винилиденфторида (ВДФ), олефина и тетрафторэтилена (ТФЭ), которые обладают хорошими механическими свойствами и высокой стойкостью к химикатам и полярным растворителям. Сущность: фторэластомерный СПЛ включает, мол.%: 5,3-63,0 звеньев ВДФ, 21,5-32,5 звеньев гексафторпропилена и/или перфторвинилового эфира (ПФВЭ), 8,0-41,3 звеньев этилена, 71-34,3 звеньев ТФЭ, при условии, что, когда сумма этиленовых и перфторвиниловых звеньев равна или превышает 70 мол.%, то такой сополимер имеет достаточно высокую молекулярную массу, соответствующую вязкости по Муни по крайней мере 10 ML121 (1+10). СПЛ может содержать в качестве звеньев ПФВЭ перфторметилвиниловый эфир; в качестве звеньев гексафторпропилена и/или ПФВЭ - только перфторметилвиниловый эфир. СПЛ может дополнительно включать мономерные звенья производных иод- и/или бромолефинов и/или бромалкилвиниловых эфиров в количестве 0,05-2 молей на 100 молей всех других мономерных ...

СПОСОБЫ ПОЛУЧЕНИЯ ПОЛИМЕРОВ С РЕГУЛИРУЕМЫМ КОМПОЗИЦИОННЫМ РАСПРЕДЕЛЕНИЕМ

... 1. Способ получения полиолефина, включающий контактирование в газофазном реакторе с псевдоожиженным слоем олефинового мономера и по меньшей мере одного сомономера с каталитической системой в присутствии первого количества по меньшей мере одной способной конденсироваться текучей среды с получением первого полиолефина; последующее контактирование второго количества по меньшей мере одной способной конденсироваться текучей среды с получением второго полиолефина, отличающийся тем, что, когда количество способной конденсироваться контактировавшей текучей среды ступенчато изменяют от 0 до 30 мол. %, ПШКР второго полиолефина превышает этот параметр первого полиолефина. 2. Способ по п.1, в котором каталитическая система характеризуется тем, что полиолефин, получаемый с помощью катализатора, обладает показателем ширины композиционного распределения (ПШКР) меньше 50%. 3. Способ по п.1, в котором каталитическая система включает гафноцен. 4. Способ по п.1, в котором на каждое увеличение количества способной ...

СПОСОБ ПОЛУЧЕНИЯ ЭТИЛЕНОВОГО ПОЛИМЕРА

Способ получения этилен/1-бутенового или этилен/1-бутен/диенового эластомера суспензионной полимеризацией мономеров в полимеризационной среде, состоящей в основном из избытка 1-бутена, который удерживают в жидкой форме, осуществляемый в присутствии катализатора на основе металлоценового соединения титана, циркония или гафния. Этот способ свободен от возможности загрязнения реактора, а его осуществление позволает выделять полимер без использования водяного пара в качестве инертного агента, содействующего отпарке. 12 з.п. ф-лы, 2 табл.

СОПОЛИМЕРЫ ЭТИЛЕНА С ПРОПИЛЕНОМ, СПОСОБ ИХ ПОЛУЧЕНИЯ, ФОРМОВАННЫЕ ИЗДЕЛИЯ

Новые сополимеры этилена с пропиленом и необязательно с минимальными пропорциями диена или полиена, имеющие высокие эластомерные свойства в неотвержденном состоянии. Сополимеры отличаются структурой, в которой пропилен частично присутствует в виде коротких изотактических чередований. Значения остаточного удлинения (200%) менее 15% получаются, когда соотношение этилен : пропилен имеет заданные значения, а значения характеристической вязкости выше 3.

ПОЛИМЕРЫ И АДДИТИВНЫЕ КОМПОЗИЦИИ

Гомополимеры или сополимеры, полученные из одного или большего числа альфа-олефинов, имеющих среднечисленную мол. м. до 15000 и изотактичность 75% или выше, и их применение в качестве присадок, улучшающих холодное течение в сырой нефти, нефтяных топливах или смазочных маслах.

ДИСПЕРГАТОРЫ НА ОСНОВЕ ПРОИЗВОДНЫХ ПОЛИОЛЕФИНА

СПОСОБ ПОЛУЧЕНИЯ СОПОЛИМЕРОВ ЭТИЛЕНА

... 1. Способ получения сополимеров этилена, включающий сополимеризацию этилена с олефинами CH2=CHR, в которых R представляет собой углеводородный радикал, содержащий 1-12 атомов углерода, осуществляемую в присутствии катализатора, включающего продукт, полученный контактированием (i) твердого компонента катализатора, включающего Mg, Ti, галоген и простой 1,3-диэфир формулы (I) в которой R представляет собой С1-С10 углеводородную группу, R1 представляет собой метил или этил, необязательно содержащий гетероатом, и R2 представляет собой С4-С12 линейную алкильную группу, необязательно содержащую гетероатом, и (ii) Al-органического соединения. 2. Способ по п.1, в котором R представляет С1-С5 алкильную группу, R1 представляет метил и R2 представляет С7-С10 линейную алкильную группу. 3. Способ по п.1, в котором простой 1,3-диэфир представляет собой 2-метил-2-пентил-1,3-диметоксипропан, 2-метил-2-н-гексил-1,3-диметоксипропан, 2-н-гептил-2-метил-1,3-диметоксипропан, 2-н-октил-2-метил-1, 3-диметоксипропан ...

Способ получения катализатора

Способ получения карбоцепных сополимеров

Способ склеивания материалов

Способ получения олефиновых сополимеров

Способ получения полиолефинов

Способ получения карбоцепных сополимеров

Способ получения карбоцепных чередующихся сополимеров

VERFAHREN ZUR GASPHASENPOLYMERISATION

Verfahren und Vorrichtung zum Entfernen von gasförmigen nichtpolymerisierten Monomeren aus Olefinpolymeren

Ethylen/Propylen Copolymerkautschuk

PREPARATION OF ETHYLENE TERPOLYMERS

Additionspolymerisationskatalysator mit eingeschränkter Geometrie, Verfahren zur Herstellung davon, Vorläufer dafür, Verfahren zur Verwendung und daraus hergestellte Polymere

Segmented polyolefin with high strength and toughness

Segmented polyolefins with high strength and toughness (I), obtained by reacting mixtures of (A) 80-99 wt% polyolefin powder with a particle size of 0.001-2 mm and (B) 20-1 wt% polyolefin granules with a particle size of 2-8 mm with (C) unsaturated monomers in continuous mixers in a multi-stage process. Component (A) comprises propylene homopolymers and/or copolymers of propylene with 2-18C alpha -olefins, ethylene polymers, polybutene-1, poly-4-methylpentene-1, or mixtures thereof, and component (B) comprises ethylene polymers, ethylene-propylene (E/P) copolymers, copolymers of (E) and 4-18C alpha -olefins, E/P- diene terpolymers, E/butadiene/styrene terpolymers, propylene block copolymers or mixtures. The process comprises (a) solid-phase reaction of mixtures of (A) and (B) at 100-40 deg C below the melting or softening pt. (Tm) of the polyolefins with (C) 5-30 wt% (meth)acrylic acid, (meth)acrylonitrile, 4-21C acrylate esters, 5-22C methacrylate esters, styrene, mono-(1-12C alkyl or ...

Emulsionspolymerisation

Herstellen von transparenten Folien

Dampfreinigung von körnigen EPDM-Harzen.

VERFAHREN ZUR HERSTELLUNG VON AETHYLENCOPOLYMEREN

VERFAHREN ZUR COPOLYMERISATION VON AETHYLEN MIT POLYUNGESAETTIGTEN KOHLENWASSERSTOFFEN

VERFAHREN ZUR HERSTELLUNG VON ISOOLEFINCOPOLYMEREN

HETEROGENEOUS ETHYLENE COPOLYMERS FOR THE MANUFACTURE OF FILMS

Zusammensetzungen und ihre Verwendung als Additiv zur Verbesserung der Kaltfliesseigenschaften von Mitteldestillaten, sowie Brennstofföl enthaltend diese Zusammensetzungen

Verfahren zur Herstellung von Ethylencopolymeren

VERFAHREN ZUM COPOLYMERISIEREN VON PROPYLEN.

AETHYLENCOPOLYMERE.

Para-Alkylstyren/Isoolefin-Copolymere

POLYMERE AUS OLEFINEN UND ALKENYLALKYLATEN UND IHRE VERWENDUNG ALS MULTIFUNKTIONELLE KRAFT- UND BRENNSTOFFZUSÄTZE

ZIEGLER NATTA KATALYSATOR FÜR DIE POLYMERISATION VON OLEFINEN

ZIEGLER NATTA KATALYSATOR FÜR DIE POLYMERISATION VON OLEFINEN

Peroxidhärtbare bromierte Fluorelastomermischungen.

Verfahren zur Herstellung von Mischpolymerisaten aus AEthylen und Propylen

Polymerisationskatalysator auf Träger.

VERFAHREN ZUR HERSTELLUNG VON AMORPHEN DURCH SCHWEFEL VULKANISIERBAREN KAUTSCHUKARTIGEN MISCHPOLYMERISATEN

VERFAHREN ZUR HERSTELLUNG VON TERPOLYMEREN, DIE ISOBUTYLEN, KONJUGIERTE DIOLEFINE UND CYCLISCHE OLEFINE ENTHALTEN, UND DIE DABEI ERHALTENEN TERPOLYMERE

COPOLYMERE AUS PROPYLEN UND ALPHAOLEFINEN UND DEREN HERSTELLUNG

Polymerharze und deren Verwendung

VERFAHREN ZUR HERSTELLUNG VON EP(D)M COPOLYMERE MIT ENGER MOLEKULARGEWICHTSVERTEILUNG

TEILFLUOROESTER ODER THIOESTER VON MALEINSÄUREPOLYMEREN UND DEREN VERWENDUNG ALS SCHMUTZ- UND FLECKABWEISENDE MITTEL

Ungesättigte Copolymere, Verfahren zu deren Herstellung und Mischungen, die diese enthalten

Functional cyclo-olefin copolymers (COC) prodn.

Cyclo-olefin copolymers (COC-1) with a soln. viscosity of less than 0.25 dl/g are claimed, contg. (A) 0.1-99.99 wt.% cyclo-olefin units, (B) 0-80 wt.% acyclic olefin units and (C) 0.01-50 wt.% peroxide oxygen linked directly to carbon atoms in the polymer chain. Also claimed is a process for the prodn. of peroxygenated COC-1 as above, by reacting non-functional COC with oxygen in the presence of free radicals. Also claimed are COC with a soln. viscosity of less than 0.25 dl/g (COC-2), obtd. by reacting the above COC with a derivatising agent, pref. a reducing, oxidising, esterifying or etherifying agent or an alpha,beta-unsatd. cpd.. This process is also claimed as such. Also claimed are coating materials contg. COC-1 or COC-2.

Verfahren zur Herstellung von linearen, hochmolekularen, elastomeren, im wesentlichen homopolymerfreien und amorphen Copolymeren des Propylens oder Butens- 1 mit AEthylen

COMPLEX THERMOPLASTIC FILMS AND PROCESS FOR THEIR MANUFACTURE

VERFAHREN ZUR HERSTELLUNG VON IONISCH VERNETZTEN ETHYLENCOPOLYMERISATEN.

Verfahren zur Herstellung von Polymerisaten auf Basis von alpha-Olefinen

Verfahren zur Herstellung von Formkoerpern aus vernetzten Pfropfpolymerisaten

Verfahren zur Herstellung von Zwischenpolymerisaten aus zwei oder mehr Olefinen

OFFENZELLIGE GESCHÄUMTE GEGENSTÄNDE ENTHALTEND MIT SILAN GEPFROPFTE POLYOLEFINHARZE

Verfahren zur Herstellung eines mit Schwefel vulkanisierbaren Polymerisats aus AEthylen und wenigstens einem anderen alpha-Alkylen mit verringertem kaltem Fluss

Rubbery ep terpolymer - prod with a ziegler-natta catalyst

The terpolymer consists of 60-75 mol.% ethylene, 20-30 mol% propylene and is not >10 wt.% 4-ethylidene-cyclohexene, which last is less than that reqd. for the more usual (and costly) norbornene to prod. the same amt. of unsatn.

KONTINUIERLICHES VERFAHREN ZUR HERSTELLUNG VON KOHLENWASSERSTOFFLOESLICHEN AETHYLEN/ALPHA-OLEFIN-MISCHPOLYMERISATEN

Process for the preparation of olefinic copolymers

Linear amorphous copolymers of propylene or butene-1 and ethylene are made by effecting the polymerization of the monomeric mix in the liquid phase at a temperature of 0 DEG to - 80 DEG C., in the presence of a catalyst obtained by contacting an addition complex of a vanadium halide with a "Lewis base" with a dialkyl aluminium halide, by maintaining in the liquid phase a molar ratio between propylene:ethylene of at least 4:1, or of butene: ethylene of at least 25:1. The polymerization may be carried out in bulk or in the presence of a halogenated or non-halogenated hydrocarbon diluent. The term "Lewis base" means aliphatic ethers, cyclic ethers, tert-amines, or heterocyclic nitrogen bases, e.g. diethyl or dipropyl ether, diethoxyethane, tetrahydrofuran, dioxan, trimethylamine, methyl-diethylamine, pyridine, or quinoline. The vanadium halide may be vanadium tetra-, or trichloride, or vanadyl trichloride. The catalyst may be preformed, but is preferably formed in the presence of the monomers ...

TERPOLYMERS

... 1378977 Styrene/alpha methyl styrene/ isobutene terpolymer HOECHST AG 16 Nov 1972 [18 Nov 1971] 53002/72 Heading C3P A terpolymer is derived from styrene, alpha methyl styrene and isobutene and preferably contains 40-85 wt. per cent of styrene units, 10-50 wt. per cent alpha methyl styrene units and 5-50 wt. per cent of isobutene units. The polymer also preferably has a softening point (DIN 1995), in the range 50-120‹ C. It may be prepared by polymerizing the monomers in a solvent at -20‹ to 100‹ C. using a Friedel-Crafts catalyst such as AlCl 3 , SnCl 4 , TiCl 4 , BF 3 , an adduct of BF 3 with one of diethyl ether, acetic acid, methanol or water. Examples of solvents are aliphatic and aromatic hydrocarbons, and chlorinated C 1 -C 6 hydrocarbons.

RUBBERY COPOLYMERS AND COMPOSITIONS THEREOF

... 1396178 Laminates STAMICARBON NV 22 Sept 1972 [24 Sept 1971 (2)] 44011/72 Heading B5N [Also in Division C3] Multi-ply structures such as drive and conveyer belts and tyres may be formed by pressing together components formed from compositions having high building tack and comprising (1) a conventional tackifier, e.g. phenol/aldehyde, phenol/acetylene and alkylated phenol resins, and (2) a rubbery copolymer of ethylene, at least one other -olefin, e.g. propylene or butene, and optionally one or more polyenes, characterized by a thermogram recorded by differential scanning calorimetry at a cooling rate of 8‹ C./min. and showing heat of crystallization as a function of temperature having a peak which passes through a maximum at a temperature between - 7‹ and + 11‹ C. The compositions may also contain fillers, e.g. carbon black, silica, whiting, aluminium and magnesium silicates, titanium dioxide and clay; extender oils; e.g. naphthenic, paraffinic and aromatic oils; and vulcanizing ingredients ...

PROCESS FOR PRODUCING OLEFINIC COPOLYMERS

... 1418343 Quadripolymers SUMITOMO CHEMICAL CO Ltd 28 Feb 1973 [28 Feb 1972] 9814/73 Heading C3P Halogen containing, sulphur curable, normally amorphous quadripolymers of (1) ethylene, (2) an monoolefin of formula RCH = CH 2 where R is a C 1 -C 20 hydrocarbon radical, (3) a hydrocarbon containing a plurality of non- conjugated unsaturated bonds and (4) a halogenated norbornene of formula where one R 1 -R 4 is a halogen atom or a C 1 -C 20 halohydrocarbon radical and the R's are hydrogen, halogen or a C 1 -C 20 hydrocarbon or halohydrocarbon radical are produced by contacting monomers 1-4 with a catalyst comprising (a) at least one organoaluminium compound AlR1nX 3-n where R1 is a C 1 -C 20 hydrocarbon radical, X is halogen and n is 1À5 to 3 and (b) at least one titanium and/or vanadium compound with a molar ratio of (a) to (b) of 5: 1 to 0À5 : 1. The catalyst may contain electron donor compounds and/or oxidizing agents. The copolymer may be compounded with a diene or butyl ...

SHEAR STABLE MUTLIVISCOSITY GRADE LUBRICATING OILS OF IMPROVED POUR POINT AND ALPHA-OLEFIN COPOLYMERS THEREIN

... 1419853 Alphaolefin copolymeric lubricating oil additives GULF RESEARCH & DEVELOPMENT CO 2 April 1973 [5 April 1972 (2)] 15745/73 Heading C3P [Also in Division C5] A linear -olefin copolymer with randomly distributed repeating units is made from (1) 70-96 mol. per cent of at least one C 5 -C 10 -olefin monomer and (2) 30-4 mol. per cent of (a) a C 16 -C 20 -olefin monomer or (b) a mixture of C 16 -C 24 -olefin monomers and has formula where m=number of C atoms in the -olefin from which the particular unit is derived. The copolymer has wt. average mol. wt. (M w )= 50,000-1,000,000 (M o /84) and number average mol. wt. (M n )=400-1,000,000 (M o /84) where M o =average mol. wt. pf the -olefin monomer mixture. The distribution factor M w /M n is 1 to 12À5, the upper limit being 12À5 when M w = 50,000 (M o /84) and the upper limit being 2 when M w =1,000,000 (M o /84) and proportionately decreasing from 12À5 to 2 as M w increases from 5000 (M o /84) to 1,000,000 (M o /84). The copolymer may ...

A polymer latex for coating fabrics

A latex composition suitable for application to a woven fabric comprises an aqueous medium having dispersed therein a vinyl acetate-ethylene-N-methylolacrylamide interpolymer, said interpolymer containing 5-40% by weight of ethylene and, preferably, having a methylolacrylamide content of 0.5-10% by weight, with reference to the amount of vinyl acetate. The interpolymer preferably has a particle size of 0.1 to 2m . The composition is prepared by polymerizing the corresponding monomers in aqueous dispersion, preferably at a pH of 2 to 6 in the presence of a catalyst and emulsifying agent; in the preferred procedure an aqueous suspension of vinyl acetate is agitated in the presence of ethylene under pressure to effect dissolution of ethylene in the vinyl acetate while gradually heating the latter, and then catalyst and methylolacrylamide are added incrementally. Suitable catalysts include hydrogen peroxide, benzoyl peroxide, t-butyl hydroperoxide, ammonium or potassium persulphate and perborates ...

Olefin copolymers

Substantially linear amorphous copolymers containing monomeric units of a methylenecyclooctene, ethylene and/or an aliphatic alphaolefin of the general formula R-CH = CH2, where R is a C1 to C6 alkyl group are made by effecting the copolymerization in the presence of a halogen-containing catalyst of a vanadium compound and a beryllium or aluminium organometallic compound or hydride. The preferred cyclooctene is 5-methylene-1-cyclooctene, and the alpha-olefin, propylene and/or butene-1. The catalyst preparation and the copolymerization are preferably effected between 0 DEG and - 80 DEG C. The copolymerization may be effected in bulk, or in a hydrocarbon or halogenated hydrocarbon solvent. The copolymers which are soluble in boiling n-heptane are recovered by conventional "low-pressure" techniques. The copolymers may be sulphur vulcanized and are then insoluble in organic solvents.

COPOLYMERS OF MONO-OLEFINS AND POLYENES AND PROCESS FOR PREPARING THE SAME

... 1344843 Monoolefin - dialkylidene norbornene terpolymers SNAM PROGETTI SpA 19 April 1971 [22 Jan 1970] 20416/71 Heading C3P A copolymer is obtainable from at least two monoolefins and a conjugated dialkylidene norbornene of the formula where R1-8 are each hydrogen, alkyl or aryl. The copolymer may be prepared by means of the usual Zeigler catalysts and polymerization techniques, including the use of polyiminoalanes as the reducing aluminium compound. In the examples, ethylene-propylene-2,3-diisopropylidene- or 2 - ethylidene - 3 - isopropylidenenorborn-5-enes are copolymerized in the presence of VOCl 3 and (C 2 H 5 ) 3 Al 2 Cl 3 .

POLYMERISATION PROCESS

... 1399294 Mixing apparatus E I DU PONT DE NEMOURS & CO 4 Oct 1972 [6 Oct 1971] 45829/72 Heading B1C [Also in Division C3] Apparatus for the continuous copolymerisation of ethylene with at least one other olefin comprises a reactor 14 having a horizontal rotatable shaft 17 and at least two reversepitched coaxial helical blades 15, 16 attached to said shaft at different radial distances therefrom. The vessel may have inlet ports 1, 2, 4, 10, 11 and 13 and outlet ports for vapour 3 and product 12. The length of the reactor may be 2 to 4 times its diameter. The volumatric pumping capacities of the blades in the axial direction may be approximately equal and opposite. There may be 4 to 12 radially inner blades and 4 to 12 radially outer blades, and the pitch of radially inner blades may be .5 to 2 times the length of the reactor, and the pitch of the radially outer blades may be 4 to 16 times the length of the reactor.

NOVEL VANADIUM COMPOUNDS AND CATALYSTS CONTAINING SUCH COMPOUNDS FOR THE POLYMERIZATION OF OLEFINIC HYDROCARBONS

... 1279731 Polymerisation catalysts SUMITOMO CHEMICAL CO Ltd 25 July 1969 [30 July 1968] 37549/69 Heading B1E [Also in Divisions C2 and C3] A catalyst for the polymerisation of olefinic hydrocarbons (see Division C3) comprises (i) a vanadium compound of the formula in which R is a radical having 5 to 20 carbon atoms and which comprises or contains a cyclic hydrocarbon group, X is a halogen atom and m is an integer from I to 3, and (ii) an organo-aluminium compound of the formula in which R' is a hydrocarbon radical having I to 20 carbon atoms, X' is a halogen atom or hydrogen and n is 1, 1.5, 2, 2.5 or 3. The radical R may be cycloalkyl cycloalkenyl, a spiro-type hydrocarbon group, indanyl, or indenyl. Many vanadium and organoaluminium compounds are specified. The vanadium compound may be prepared by reacting a vanadyl alkoxide or alkoxy halide with an alcohol ROH, vanadyl trichloride with the alcohol ROH, or a vanadyl compound of the formula VO(OR) 3 with a carboxylic acid halide.

ELECTRICALLY-CONDUCTIVE RESIN COMPOSITION

Copolymer Catalyst System and Product

... 1,192,068. Copolymerization catalyst composition. ESSO RESEARCH & ENG. CO. 10 Oct., 1967, No. 46181/67. Heading B1E. A catalyst component comprises the reaction product of a vanadium oxyhalide wherein the halogen is Cl, Br or I, a vanadium oxyacetylacetonate VOA 2 wherein A is an acetylacetonate or halolacetylacetonate radical, or a C 1 -C 12 alkyl vanadate VO(OR) 3 with an alkyl titanate Ti(OR) 4 wherein R is C 1 -C 12 alkyl radical in a molar ratio of 0.05 to 10 mols of vanadium compound per mole of Ti compound. The preferred compounds are VOCl 3 and Ti(OC 4 H 9 ) 4 . A catalyst composition for copolymerization reactions comprises the foregoing component and an aluminium alkyl compound R m AlX n wherein R is a C 1 -C 12 monovalent hydrocarbon radical, X is either a C 1 -C 12 monovalent hydrocarbon radical or a halogen Cl, Br or I, M equals 1 to 3 and (n + m) equals 3. A preferred aluminium compound is diethyl aluminium chloride.

GOLF BALL

Process for the production of isothiazole and substituted isothiazole compounds

The invention comprises 4-methyl, 5-methyl, 4-cyano, 4-phenyl- and 5-phenyl isothiazoles. These and other isothiazoles are prepared by reacting compounds of the general formulae R1-CH2-CR2 = CHR3 and R1-CH2-C ­ CR3, in which R1, R2 and R3 are like or different and represent hydrogen, alkyl, aryl, aralkyl, alkaryl, acyl, nitrile or alkoxy groups, with sulphur dioxide and ammonia in the presence of solid dehydrating, cracking or dehydrogenating catalysts. The preferred temperature range is 200-500 DEG C. Propylene is converted to isothiazole by the process of the invention. Instead of propylene isopropyl alcohol, which is converted to propylene under the reaction conditions may be used as starting material. Similarly tertiary butanol and n-butyl acetate may be used instead of the corresponding butylenes. Compounds which give sulphur dioxide, e.g. sulphurous acid, and ammonia, e.g. ammonium carbonate and ammonium carbamate, under the reaction conditions, may be used instead of sulphur dioxide ...

Method for producing saponifield ethylene-vinyl acetate copolymer

ETHYLENE COPOLYMERS HAVING A LINEAR STRUCTURE

Process for the preparation of olefinic copolymers

Linear high molecular weight amorphous copolymers of ethylene with propylene or butene-1 are made by copolymerizing at a temperature of from 0 DEG to - 80 DEG C. a mixture of the monomers in the presence of a hydrocarbon solvent and a catalyst prepared at 0-80 DEG C., consisting of the reaction product of a dialkyl aluminium monohalide, a monoalkyl aluminium dihalide, or an equimolar mixture with a hydrocarbon-soluble halide or vanadium. The copolymerization is effected in the liquid phase and there is maintained therein a molar ratio between propylene:ethylene of at least 4:1 and between butene:ethylene of at least 25:1. The vanadium halide may be vanadium tetrachloride or tetrabromide, or vanadyl trichloride. The copolymerization is carried out in the presence of a hydrocarbon or halogenated hydrocarbon, and it may be effected continuously. The copolymers may be recovered by conventional techniques, and vulcanized by known methods such as with sulphur and peroxides. Specification 985,594 ...

Process for preparing a copolymer

Ethylene-???-olefine copolymers having a density of 0.850 to 0.945 which are suitable for molding or extrusion are obtained without many of the problems associated with high pressure or solution polymerization by copolymerizing ethylene, 1 to 40 mol% thereof of an ???-olefin having 5 to 18 carbon atoms and optionally a diene in a substantially solvent-free vapor phase condition and in the presence of a catalyst comprising a solid substance and an organoaluminium compound, said solid substance containing magnesium and titanium and/or vanadium.

High pressure ziegler copolymer of ethylene and d-olefin

A copolymer of ethylene and a minor proportion of an alpha -olefin having 4 to 10 carbon atoms is characterized by having the properties (1) a melt flow rate (MFR) of 0.1 to 100 g/10 min.; (2) a density of 0.91 to 0.94 g/cm3; and (3) a xylene absorption per unit amorphous region (Y) satisfying the formula: Y<-0.80X+0.67 wherein X is the degree of the crystallinity of the copolymer. By satisfying the above requirements, the copolymer can give a film packaging material having excellent transparency, impact strength and opening property (anti-blocking property) in combination.

COPOLYMERISATION OF OLEFINS WITH UNSATURATED TRICYCLIC COMPOUNDS

... 1286047 Copolymers of olefins and unsaturated tricyclic compounds SOCIETE NATIONALE DES PETROLES D'AQUITAINE 27 Nov 1969 [28 Nov 1968] 58105/69 Heading C3P Copolymers of olefins with polycycloalkenes are prepared by contacting at least one olefin with an [(n+2), 2, 1, 02,(n+3)] tricycloalkene, having n + 7 nuclear carbon atoms and a double bond in the n+5 position, n being an integer between 1 and 10, and having an unsaturated aliphatic hydrocarbon radical substituted in either the 2 or (n + 3) position, in an inert liquid medium at - 50‹ to + 90‹ C., in the presence of a catalyst system comprising an organometallic compound of one or more Group I to III metals and a compound of a Group IV to VIII transition metal, the atomic ratio between the metal of the organo-metallic compound and the transition metal being between 1 : 1 and 30 : 1. Those copolymers of C 2-10 olefins and tricycloalkenes in which the unsaturated aliphatic hydrocarbon substituent is a C 2-16 alkenyl or a C 4- ...

Moisture curable copolymers

A copolymer of at least one C2-C10 alphaolefin with a halosilane of the formula where R is a C1-C6 alkylene, arylene, or cycloalkylene radical, R1 is hydrogen or a C1-C6 alkylene, arylene, or cycloalkylene radical, X is Cl or Br, m is 0 or 1, n is 0, 1, or 2, y is 1, 2, or 3, and n + y equals 3, are made by effecting the copolymerization in the presence of a transition metal compound of a metal of Group IV to VI and VIII of the Periodic System and an organometallic compound, and contacting the resulting copolymer with water. Specified silanes are bicycloheptenyl dimethyl chlorosilane, bicycloheptenyl propyl dibromosilane, and bicycloheptenyl trichlorosilane. Exemplified olefins are ethylene, and propylene. Exemplified catalysts are aluminium triisobutyl in a white oil, and YCl4. Chain terminators such as H2, HCl, and Zn(C2H5)2 may be present during copolymerization. The copolymer compounded with fillers may be vulcanized.

Polymers

... 1,176,208. Ethylene-alpha monoolefin copolymerization. EASTMAN KODAK CO. 15 March, 1967 [15 March, 1966], No. 12108/67. Heading C3P. A solid crystallizable ethylene/alphamonoolefine elastomeric copolymer containing 30 to 70% ethylene, having a density of 0À865 to 0À920 gm./c.c., exhibiting melting points and X-ray crystallinities characteristic of crystalline homopolymers of ethylene and of said alphamonoolefins, and being substantially free of homopolymers of ethylene and of said alphamonoolefins is obtained by copolymerizing the monomers in the presence of a catalyst comprising (a) an aluminium hydrocarbyl dihalide, (b) a titanium or vanadium halide and (c) hexamethylphosphorictriamide, dimethyl formamide, N,N-dimethylacetamide or a tertiary amine. In the examples, ethylene-propylene, ethylenebutene-1, ethylene-propylene-dicyclopentadiene or 1,7-octadiene and ethylene-hexene-1 copolymers are obtained using (a) Al(C 2 H 5 )Cl 2 and (b) TiCl 3 , in some cases in the presence of hydrogen ...

COPOLYMERIZATION OF CONJUGATED POLYENES AND ALPHA-OLEFINS

ETHYLENE COPOLYMERS

... 1343226 Modifying ethylene-polyene copolymers SNAM PROGETTI SpA 3 Feb 1972 [3 Feb 1971] 5195/72 Heading C3P Copolymers of ethylene with 0À02 to 20 weight per cent of a polyene containing at least two conjugated carbon to carbon double bonds and selected from (a) polycyclic polyenes containing a hydrocarbon ring bridged by an endomethylene group and ortho condensed with another hydrocarbon ring, wherein the two carbon atoms common to the two rings belong to a conjugated diene system of which the carbon to carbon double bonds are in said other hydrocarbon ring, (b) polyenes in which the carbon to carbon double bond of an alkylidene radical is conjugated with a carbon to carbon double bond of a ring part of which is common with part of an endocyclic ring, and (c) polyenes constituted by a norbornene radical substituted either by an acyclic alkadiene radical or by a cycloalkadiene radical, the acyclic alkadiene or cycloalkadiene radical containing the conjugated carbon to carbon double bonds ...

A method for copolymerization of olefins

Random copolymers are prepared from two aliphatic olefins of two to five carbon atoms each by preparing in the presence of one olefin monomer a catalyst comprising an organometallic compound of a metal of Group I, II or III of Mendeleef's Periodic Table and a halide of a transition metal of Group IVa, Va, or VIa, and subsequently introducing the second olefin monomer to initiate copolymerization. Triethyl aluminium and titanium tetrachloride are added to a solution of propylene in n-hexane and, after agitation for a period, isoprene is added. The copolymerization reaction is terminated by adding n-butanol and the product is precipitated with methanol.

Process for the preparation of copolymers of ethylene with at least one other alkene and at least one poly-unsaturated endocyclic compound

A copolymer of ethylene with at least one other alkene and at least one polyunsaturated endocyclic compound is prepared with the aid of a co-ordination catalyst comprising as a component thereof an organic aluminium compound or a mixture of organic aluminium compounds containing, or on average containing less than two hydrocarbon radicals per aluminium atom. At least one non-complex compound of a metal from Groups IVa to VIa or Group VIII of the Mendel<\>aeef Periodic Table forms the other part of the co-ordination catalyst. If desired, Lewis bases may also be added. Lists of monomers and catalyst components are given. The polymerization may be carried out at 15 DEG to 90 DEG C. in the presence of a solvent which may be one of the monomers. The copolymers may be vulcanized by heating with sulphur the normal butyl rubber vulcanization recipes may be used, at 100 DEG to 250 DEG C. In the examples, copolymers are prepared from ethylene, propylene and bicyclopentadiene using as catalyst systems ...

POLYMERS AND ADDITIVE COMPOSITIONS

BLOCK COPOLYMER AND ANTISTATIC AGENT COMPRISING SAME

There is provided as an antistatic agent that preserves antistatic properties for a long period of time and that does not impair the appearance and transparency of a resin into which the antistatic agent is kneaded, and a resin composition containing the antistatic agent. A block copolymer obtained from a reactant between (a) an acid-modified polyolefin and (b) an alkylene oxide adduct of amide alcohol of General Formula (1), part or all of residual acid groups in the reactant being neutralized by an alkaline substance: R—CONH—R—O-(AO)n-H (1) (where Ris a Clinear or branched alkyl group or alkenyl group; Ris a Clinear or branched alkylene group; Ais a Calkylene group; and n is an integer of 1 to 100); an antistatic agent including the block copolymer; a thermoplastic resin composition including the antistatic agent; and a film or sheet including the composition. 1. A block copolymer obtained from a reactant between (a) an acid-modified polyolefin and (b) an alkylene oxide adduct of amide alcohol of General Formula (1) , part or all of residual acid groups in the reactant being neutralized by an alkaline substance:{'br': None, 'sup': 1', '2', '1, 'i': 'n', 'R—CONH—R—O-(AO)—H\u2003\u2003(1)'}{'sup': 1', '2', '1, 'sub': 1-21', '1-4', '2-4, '(where Ris a Clinear or branched alkyl group or alkenyl group; Ris a Clinear or branched alkylene group; Ais a Calkylene group; and n is an integer of 1 to 100).'}2. The block copolymer according to claim 1 , wherein (a) the acid-modified polyolefin is obtained by modifying one terminal of a polyolefin by an α claim 1 ,β-unsaturated carboxylic acid or an anhydride thereof.3. The block copolymer according to wherein (a) the acid-modified polyolefin is polybutenylsuccinic acid or an anhydride thereof.4. The block copolymer according to claim 1 , wherein the block copolymer is a copolymer having an (A)-(B)-(A) bonding structure claim 1 , an (A)-(B) bonding structure claim 1 , or both the structures where (A) is a block derived from (a) ...

Methods for Determining Transition Metal Compound Concentrations in Multicomponent Liquid Systems

Methods for determining the concentration of transition metal compounds in a solution containing more than one transition metal compound are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems and for improving methods of preparing the multicomponent catalyst system.

A process for transitioning between ziegler natta system and metallocene catalyst system

본 발명은 서로 비혼화성인 중합 촉매 시스템 간의 전환 방법에 관한 것으로서, 보다 상세하게는 통상적인 지글러 나타 촉매 시스템을 사용하는 올레핀 중합반응에서 메탈로센 촉매 시스템을 사용하는 올레핀 중합반응으로 전환시키는 방법에 관한 것이다. 본 발명에 따르면, 다양한 중합 반응에 대해 비활성화제를 최소의 양으로 사용하므로써, 비혼화성 촉매계 간의 전환공정의 시간을 단축하고, 신규로 도입되는 촉매의 중합반응 진행이 용이하게 일어나도록 해줄 뿐만 아니라, 시트 발생 등과 같은 문제를 예방하는 효과를 나타낸다. The present invention relates to a process for converting between immiscible polymerization catalyst systems, and more particularly to a process for converting an olefin polymerization reaction using a conventional Ziegler-Natta catalyst system to an olefin polymerization reaction using a metallocene catalyst system. It is about. According to the present invention, by using a deactivator in a minimum amount for various polymerization reactions, not only shortens the time of the conversion process between immiscible catalyst systems, but also facilitates the progress of polymerization of newly introduced catalysts, It is effective in preventing problems such as sheet generation. 비활성화제, 전환, 지글러 나타, 메탈로센, 올레핀, 비혼성화 촉매 Deactivator, Conversion, Ziegler-Natta, Metallocene, Olefin, Unhybridized Catalyst

Polymerization process

Method for controlling sheeting in gas phase reactors

Embodiments of the present invention relate to measuring and controlling static in a gas phase reactor polymerization. In particular, embodiments relate to monitoring carryover static in an entrainment zone during gas phase polymerization to determine the onset of reactor discontinuity events such as chunking and sheeting. Embodiments also relate to monitoring carryover static to determine the need for effective additions of continuity additives that minimize reactor static activity and thereby preventing discontinuity events.

Polymerization process

The present invention relates to a continuous process for the polymerization of olefin(s) utilizing a metallocene catalyst or catalyst system in a continuous slurry or gas phase polymerization process. The invention is more particularly drawn to a gas phase polymerization process for polymerizing one or more olefin(s) in the presence of a metallocene catalyst system in a fluidized bed reactor in the absence of or with a low amount of a scavenger.

ALPHA-OLEFIN PREPOLYMER CONTAINING A TRANSITIONAL METAL AND PROCESS FOR THE POLYMERIZATION OF ALPHA-OLEFIN IN THE GAS PHASE USING THE PREPOLYMER.

Polymerization process

The present invention relates to a continuous process for the polymerization of olefin(s) utilizing a metallocene catalyst or catalyst system in a continuous slurry or gas phase polymerization process. The invention is more particularly drawn to a gas phase polymerization process for polymerizing one or more olefin(s) in the presence of a metallocene catalyst system in a fluidized bed reactor in the absence of or with a low mount of a scavenger.

Method for controlling sheeting in gas phase reactors

Embodiments of the present invention relate to measuring and controlling static in a gas phase reactor polymerization. In particular, embodiments relate to monitoring carryover static in an entrainment zone during gas phase polymerization to determine the onset of reactor discontinuity events such as chunking and sheeting. Embodiments also relate to monitoring carryover static to determine the need for effective additions of continuity additives that minimize reactor static activity and thereby preventing discontinuity events.

Process for producing sticky polymers

An improvement in the process for producing sticky polymers in a fluidized bed reactor catalyzed by a transition metal catalyst in the presence of an inert particulate material prone to generate excessive negative charges in said reactor, by conducting the process in the presence of a composition comprising a mixture of an alcohol phosphate salt and a quarternary ammonium salt, which is dissolved in a suitable solvent.

Improved catalyst composition for copolymerizing ethylene

Polymerization process

Polymerization process

The present invention relates to a continuous process for the polymerization of olefin(s) utilizing a metallocene catalyst or catalyst system in a continuous slurry or gas phase polymerization process. The invention is more particularly drawn to a gas phase polymerization process for polymerizing one or more olefin(s) in the presence of a metallocene catalyst system in a fluidized bed reactor in the absence of or with a low amount of a scavenger.

Polymerization Method

본 발명은 연속 슬러리 또는 기상 중합공정으로 메탈로센 촉매 또는 촉매 시스템을 사용하여 올레핀(들)을 중합시키기 위한 연속 중합방법에 관한 것이다. 본 발명은 특히 소거제의 부재하에 또는 소량의 소거제의 존재하에 유동상 반응기에서 메탈로센 촉매 시스템의 존재하에 하나 이상의 올레핀(들)을 중합시키기 위한 기상 중합방법에 관한 것이다. The present invention relates to a continuous polymerization process for polymerizing olefin (s) using a metallocene catalyst or catalyst system in a continuous slurry or gas phase polymerization process. The present invention relates in particular to a gas phase polymerization process for polymerizing one or more olefin (s) in the presence of a metallocene catalyst system in a fluidized bed reactor in the absence of a scavenger or in the presence of a small amount of scavenger.

Methods for producing polymers with control over composition distribution

Methods for controlling a melt viscosity of a polyolefin, controlling comonomer distribution of a polyolefin, achieving a targeted melt viscosity of a polyolefin, and films made from such polyolefins are provided. The methods include contacting an olefin monomer and at least one comonomer with a catalyst system in the presence of a condensable fluid comprising a saturated hydrocarbon having from 2 to 8 carbon atoms. The catalyst system in one embodiment includes a hafnium metallocene catalyst component.

Olefin polymerization process with little or no scavenger present

The present invention relates to a continuous process for the polymerization of olefin(s) utilizing a metallocene catalyst or catalyst system in a continuous slurry or gas phase polymerization process for polymerizing monomer(s). The invention is more particularly drawn to a gas phase polymerization process for polymerizing one or more olefin(s), alone or in combination, in the presence of a metallocene catalyst system in a fluidized bed reactor, preferably operating in a condensed mode.

지글러 나타 촉매계와 메탈로센 촉매계 사이의 전환 방법

본 발명은 서로 비혼화성인 중합 촉매 시스템 간의 전환 방법에 관한 것으로서, 보다 상세하게는 통상적인 지글러 나타 촉매 시스템을 사용하는 올레핀 중합반응에서 메탈로센 촉매 시스템을 사용하는 올레핀 중합반응으로 전환시키는 방법에 관한 것이다. 본 발명에 따르면, 본 발명은 비혼화성 촉매의 전환 공정에서 발생할 수 있는 겔 형성 문제를 전환 공정의 완료 전에 예측할 수 있는 방법을 제공하므로써, 성공적인 촉매 전환을 이룰 수 있도록 해주며, 이로써 겔 생성에 의한 반응 생성물 및 유동층 내의 중합체 입자의 오염을 방지하고, 이러한 경우에 생길 수 있는 시간과 비용의 손실을 방지하는 효과가 있다. 비활성화제, 전환, 지글러 나타, 메탈로센, 비혼성화 촉매

Process for improving the co-polymerization of ethylene and an olefin co-monomer in a polymerization loop reactor

The present invention relates to a process for improving the co-polymerization of ethylene and an olefin co-monomer, preferably hexene, in a polymerization loop reactor characterized in that said process comprises the step of controlling the co-monomer/monomer ratio along the path of the reactor, and in particular by multiple, spat Tally separated, feeding of monomer along the path of the loop reactor. In another aspect, the invention relates to a polymerization loop reactor suitable for the co-polymerization process of ethylene and an olefin co-monomer, preferably hexene.

Polymerisation control process

The present invention relates to a process for maintaining a continuous gas-phase (co-) polymerisation of olefins in a large fluidised bed reactor in a homogeneous mode whilst operating at high space time yield and condensation rate in the presence of a polymerisation catalyst.

Preparation of polymer incorporating masked functional group-containing monomers

Polymers of olefin monomers and a substantially uniform concentration of carboxyl, hydroxyl, thio, amino, cabonyl and imino functional group-containing monomers. Polymers of olefin monomers and carboxyl, hydroxyl, thio, amino, carbonyl and imino functional group-containing monomers substantially devoid of halogen. Method for preparing polymers by reacting carboxyl, hydroxyl, thio, amino, carbonyl and imino functional group-containing monomers with non-halogenated organometallic compounds to form masked, functional group-containing monomers and polymerizing polymer chain monomers with the masked, functional group-containing monomers to produce a polymer chain. Method for forming masked, functional group-containing monomers by reacting carboxyl, hydroxyl, thio, amino, carbonyl and imino functional group-containing monomers with non-halogenated organometallic compounds. Masked, carboxyl, hydroxyl, thio, amino, carbonyl and imino functional group-containing monomers.

Polymer production

In the gas phase, two stage process for the production of polypropylene impact copolymer, the fouling of the second stage recycle loop and the heat exchange unit incorporated therein is reduced by the addition to the substantially gaseous material passing through the loop of a small amount of alkylene compound selected from alkylene glycol compounds, alkylene glycol derivatives of alkylene diamines or ethers or esters thereof.

Method of Controlling the Relative Activity of the Different Active Centers of Hybrid Catalysts

Method of preparing olefin polymers, which comprises the polymerization of at least one α-olefin in the presence of a hybrid catalyst to produce a polymer comprising at least a higher molecular weight polymer component and a lower molecular weight polymer component in the presence of water in an amount of from 2 to 100 mol ppm and/or carbon dioxide in an amount of from 2 to 100 mol ppm, in each case based on the total reaction mixture, in order to alter the ratio of the higher molecular weight polymer component to the lower molecular weight polymer component. This enables the ratio of the higher molecular weight component to the lower molecular weight component to be controlled selectively.

Method of controlling the relative activity of the different active centers of hybrid catalysts

Method of preparing olefin polymers, which comprises the polymerization of at least one α-olefin in the presence of a hybrid catalyst to produce a polymer comprising at least a higher molecular weight polymer component and a lower molecular weight polymer component in the presence of water in an amount of from 2 to 100 mol ppm and/or carbon dioxide in an amount of from 2 to 100 mol ppm, in each case based on the total reaction mixture, in order to alter the ratio of the higher molecular weight polymer component to the lower molecular weight polymer component. This enables the ratio of the higher molecular weight component to the lower molecular weight component to be controlled selectively.

Polymerisation control process

Process for maintaining a continuous gas-phase (co-) polymerization of olefins in a large fluidized bed reactor in a homogeneous mode while operating at high space time yield and condensation rate in the presence of a polymerization catalyst.

Catalyst for olefin polymerization and copolymerization, and olefin polymerization or copolymerization method using same

The present invention relates to a high-purity polypropylene, and a method for preparing same, and more specifically, provides a catalyst for the polymerization and copolymerization of a high-molecular-weight polyolefin having a low melt index, wherein a catalyst component is prepared using a supported metallocene catalyst and a titanocene compound or a half-titanocene compound so as to have an excellent catalytic activity, and relates to an olefin polymerization or copolymerization method using same.

Method for preparing polyolfin and polyolefin prepared therefrom

본 발명은 폴리올레핀의 제조 방법 및 이로부터 제조된 폴리올레핀에 관한 것이다. 본 발명에 따르면, 큰 분자량과 넓은 다봉 분자량 분포를 갖는 폴리올레핀을 보다 효과적으로 제조할 수 있는 방법이 제공된다. 본 발명의 제조 방법에 따른 폴리올레핀은 기계적 물성 및 가공성이 우수하여 특히 블로우 몰딩용 등으로 적합하게 적용될 수 있다. The present invention relates to a process for the production of polyolefins and to polyolefins prepared therefrom. According to the present invention, there is provided a method for more effectively producing a polyolefin having a large molecular weight and a broad multi-branched molecular weight distribution. The polyolefin according to the production method of the present invention is excellent in mechanical properties and processability, and can be suitably applied particularly for blow molding.

Polymerisation process

A process for the polymerisation of olefin monomers selected from (a) ethylene, (b) propylene (c) mixtures of ethylene and propylene and (d) mixtures of (a), (b) or (c) with one or more other alpha-olefins is performed in a polymerisàtion reactor in the presence of a supported polymerisation catalyst characterised in that prior to injection into the reactor said supported polymerisation catalyst in the form of a powder is contacted with an inert hydrocarbon liquid in a quantity sufficient to maintain said catalyst in powder form. The preferred inert hydrocarbon liquid is hexane. The supported polymerisation catalyst is preferably a supported metallocene catalyst. According to the process of the prescrit invention the level of fines associated with the polymer products is reduced in particular the level of fines having a diameter < 125 ~m and microfines of diameter < 50 ~m.

Preparation of olefin polymers, e.g. polyethylene, for producing pressure pipes for transport of gas and wastewater, by polymerization of alpha-olefin(s) with hybrid catalyst to produce higher and lower molecular weight polymer components

Preparation of olefin polymers comprises polymerization of alpha -olefin(s) in the presence of a hybrid catalyst to produce a polymer comprising a higher molecular weight polymer component and a lower molecular weight polymer component in the presence of 2-100 mol ppm water and/or 2-100 mol ppm carbon dioxide. Independent claims are also included for: (1) a method of controlling the ratio of a higher molecular weight polymer component to a lower molecular weight polymer component in an olefin polymer; (2) a method of regulating the ratio of a higher molecular weight polymer component to a lower molecular weight polymer component in an olefin polymer using the control method; (3) use of carbon dioxide for decreasing the ratio of a higher molecular weight component to a lower molecular weight component in an olefin polymer; and (4) use of water for increasing the ratio of a higher molecular weight component to a lower molecular weight component in an olefin polymer.

Process for the manufacture of alternate copolymers of acrylonitrile and olefins

Die Erfindung betrifft ein Verfahren zur Herstellung von alternierenden Copolymeren aus ungesättigten polaren Verbindungen und Olefinen in Gegenwart von Komplexierungsmitteln, wobei das Komplexierungsmittel aus dem primär gebildeten Copolymer-Metallverbindung-Komplex in einfacher Weise und in wiederverwendbarer Form zurückzugewonnen werden kann. Die Copolymerisation wird in Gegenwart von Salzen wie Nitraten, bevorzugt aber Halogeniden zweiwertiger Metallionen als Komplexbildner in organischen Lösungsmitteln bei Drucken bis zu ca. 100 bar und bei Temperaturen, die zwischen -78°C und 100°C liegen unter Verwendung radikalischer Initiatoren durchgeführt. Das Reaktionsprodukt besteht aus einem Gemisch des streng alternierend aufgebauten Copolymerisats aus ungesättigter polarer Verbindung und Olefin, sowie aus einem an der ungesättigten polaren Verbindung reicheren Copolymeren. Das alternierende Copolymere läßt sich daraus durch Extraktion mit Lösungsmitteln wie Trichlormethan oder Aceton leicht abtrennen. The invention relates to a process for the preparation of alternating copolymers of unsaturated polar compounds and olefins in the presence of complexing agents, the complexing agent being able to be recovered from the copolymer-metal compound complex formed in a simple manner and in a reusable form. The copolymerization is carried out in the presence of salts such as nitrates, but preferably halides of divalent metal ions as complexing agents in organic solvents at pressures up to about 100 bar and at temperatures which are between -78 ° C. and 100 ° C. using free radical initiators. The reaction product consists of a mixture of the strictly alternating copolymer of unsaturated polar compound and olefin, and of a copolymer richer in the unsaturated polar compound. The alternating copolymer can easily be separated from it by extraction with solvents such as trichloromethane or acetone.

Process for the manufacture of alternate copolymers of unsaturated polar compounds and olefins

Improved catalyst composition for copolymerizing ethylene

Ethylene copolymers having improved resistance to pinstriping and gel streaking when extruded into film can be produced by continuously copolymerizing ethylene with one or more higher alpha olefin monomers in a low pressure gas phase reaction with a catalyst composition prepared by forming a precursor composition from a magnesium compound, titanium compound, and electron donor compound; diluting said precursor composition with a silica support which has been treated with a dialkylzinc compound; and activating the diluted precursor composition with an organoaluminum compound.

Methods for producing polymers with control over composition distribution

Methods for controlling a melt viscosity of a polyolefin, controlling comonomer distribution of a polyolefin, achieving a targeted melt viscosity of a polyolefin, and films made from such polyolefins are provided. The methods include contacting an olefin monomer and at least one comonomer with a catalyst system in the presence of a condensable fluid comprising a saturated hydrocarbon having from 2 to 8 carbon atoms. The catalyst system in one embodiment includes a hafnium metallocene catalyst component.

Polymerization process

The present invention relates to a continuous process for the polymerization of olefin(s) utilizing a metallocene catalyst or catalyst system in a continuous slurry or gas phase polymerization process. The invention is more particularly drawn to a gas phase polymerization process for polymerizing one or more olefin(s) in the presence of a metallocene catalyst system in a fluidized bed reactor in the absence of or with a low amount of a scavenger.

Polymerization process

The present invention relates to a continuous process for the polymerization of olefin(s) utilizing a metallocene catalyst or catalyst system in a continuous slurry or gas phase polymerization process. The invention is more particularly drawn to a gas phase polymerization process for polymerizing one or more olefin(s) in the presence of a metallocene catalyst system in a fluidized bed reactor in the absence of or with a low amount of a scavenger.

重合プロセス

(57)【要約】 本発明は、連続式のスラリー又は気相重合プロセスにおいてメタロセン触媒又は触媒系を使用するオレフィンの重合用の連続式プロセスに関する。本発明は、特に、掃去剤の不存在下又は少量の掃去剤の存在下に、流動床反応器中においてメタロセン触媒系の存在下に１種以上のオレフィンを重合する気相重合プロセスに関する。

聚合生产工艺

本发明涉及一种用金属茂催化剂或金属茂催化剂体系于连续淤浆或气相聚合工艺中聚合烯烃的连续生产工艺。本发明尤其涉及在无净化剂或少量净化剂存在下于流化床反应器中在金属茂催化剂体系存在下聚合一种或多种烯烃的气相聚合工艺。

Polymerization process

Polymerization

POLYMERIZATION PROCEDURE

Un procedimiento de polimerización en fase gas o en suspensión continuo para la polimerización de una o más olefinas que usa un sistema catalítico de metaloceno de un componente catalítico de metaloceno y un componente que puede activar el metaloceno en un reactor capaz de producir a un régimen superior a 227 kg/h un producto polímero, el cual procedimiento opera con no más de 50 ppm de un agente de barrido basado en el peso total de un lecho fluidizado en cualquier momento dado en el tiempo, introducido directamente o indirectamente en la corriente de reciclo o en cualquier medio externo capaz de introducir el agente de barrido en el reactor, realizándose el procedimiento de tal manera que durante las primeras 12 horas a partir del momento en que el catalizador se coloca en el reactor el agente de barrido está presente en una cantidad suficiente hasta que el catalizador ha alcanzado una productividad sobre una base de relación en peso superior a 1000 gramos de polímero por gramo del catalizador. A gas phase or continuous suspension polymerization process for the polymerization of one or more olefins using a metallocene catalyst system of a metallocene catalyst component and a component that can activate the metallocene in a reactor capable of producing at a higher rate at 227 kg / h a polymer product, which process operates with no more than 50 ppm of a sweeping agent based on the total weight of a fluidized bed at any given time in time, directly or indirectly introduced into the recycle stream or in any external means capable of introducing the sweeping agent into the reactor, the procedure being carried out in such a way that during the first 12 hours from the moment the catalyst is placed in the reactor the sweeping agent is present in an amount sufficient until the catalyst has reached a productivity on a basis of weight ratio greater than 1000 grams of polymer po r gram of catalyst.

Polymerization process

FIELD: polymer production. SUBSTANCE: continuous suspension or gas-phase polymerization of olefin(s) involving transition metal compound with bulky ligand as catalyst, optionally in presence of small amounts (up to 10 ppm based on total recirculation stream) of cleaning component, is carried out in reactors in presence of metallocene catalytic system. Output of rector is higher than 500 lbs/h (227 kg/h), preferably up to 200000 lbs/h of polymer product. Multistage process is also carried out in fluidized-bed reactors for continuous gas-phase or suspension polymerization of C2-C20-alpha-olefins or copolymerization of one or several alpha-olefins with other alpha-olefin, cycloolefins, styrene, polar vinyl monomers, diolefins, polyenes, norbornenes, norbornadiene, acetylenic, and aldehyde monomers. The following stages are performed: feeding recirculation monomer stream into reactor, introducing metallocene catalytic system, introducing cleaning agent in amounts less than 300 ppm followed by stopping its introduction and/or introducing such amount thereof which ensures less than 50 ppm of C14-C18-oligomers in polymer. Process is completed by following stages: discharge, cooling, addition of supplementary amounts of monomer(s) into stream, feeding it into reactor and discharging polymer product with velocity higher than 500 lbs/h, preferably up to 20000 lbs/h. EFFECT: improved reactor operation conditions and improved physical characteristics of polymers. 24 cl, 11 tbl Ут ЭУЕСс ПЧ с» (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ” 2 165 434 (51) МПК” (13) С2 С ОЗЕ 2/18, 4/64, 10/00 (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 97106105/04, 13.09.1995 (24) Дата начала действия патента: 13.09.1995 (30) Приоритет: 14.09.1994 Ц$ 08/306.055 (43) Дата публикации заявки: 20.05.1999 (46) Дата публикации: 20.04.2001 (56) Ссылки: М/О 93/09148 АЛ, 13.05.1993. 4$ 4933149 АЛ, 12.01.1991. ($ 5229418 АЛ, 20.07.1993. ЧИРКОВ Н.М. И ДР. ...

Verfahren zur Herstellung von geträgerten Katalysatoren für die Polymerisation

Die Erfindung betrifft ein Verfahren zur Herstellung eines geträgerten Katalysators insbesondere für die Polymerisation und/oder Copolymerisation von Olefinen, umfassend die Schritte: DOLLAR A a) Herstellung eines Hydrogels; DOLLAR A b) Vermahlen des Hydrogels zu einem feinpartikulären Hydrogel; DOLLAR A c) Erzeugung eines Slurries auf Basis des feinpartikulären Hydrogels; DOLLAR A d) Trocknen des das feinpartikuläre Hydrogel umfassenden Slurries unter Erhalt des Trägers für Katalysatoren; DOLLAR A e) Erzeugung des geträgerten Katalysators durch Aufbringen wenigstens eines Übergangsmetalls und/oder wenigstens einer Übergangsmetallverbindung auf den Träger für Katalysatoren und gegebenenfalls Aktivierung, DOLLAR A wobei man im Schritt b) ein feinpartikuläres Hydrogel erzeugt, wobei: DOLLAR A - wenigstens 5 Vol.-% der Partikel, bezogen auf das Gesamtvolumen der Partikel, eine Partikelgröße im Bereich von > 0 mum bis 3 mum und/oder DOLLAR A - wenigstens 40 Vol.-% der Partikel, bezogen auf das Gesamtvolumen der Partikel, eine Partikelgröße im Bereich von > 0 muum bis 12 mum und/oder DOLLAR A - wenigstens 75 Vol.-% der Partikel, bezogen auf das Gesamtvolumen der Partikel, eine Partikelgröße im Bereich von > 0 mum bis 35 mum DOLLAR A aufweisen, und wobei man in Schritt e) einen gemäß der Schritte a) bis d) herstellbaren Träger für Katalysatoren verwendet.

POLYMERIZATION PROCEDURES.

LA PRESENTE INVENCION SE REFIERE A UN PROCEDIMIENTO CONTINUO PARA LA POLIMERIZACION DE OLEFINA(S) UTILIZANDO UN CATALIZADOR O SISTEMA CATALIZADOR DE METALOCENO EN UN PROCEDIMIENTO DE POLIMERIZACION DE PASTA O EN FASE GASEOSA CONTINUO. LA INVENCION ESTA DESTINADA EN CONCRETO A UN PROCEDIMIENTO DE POLIMERIZACION EN FASE GASEOSA PARA POLIMERIZAR UNA O MAS OLEFINA(S) EN PRESENCIA DE UN SISTEMA CATALIZADOR DE METALOCENO EN UN REACTOR DE LECHO FLUIDIZADO EN LA AUSENCIA O CON UNA BAJA CANTIDAD DE DESPERDICIO. THE PRESENT INVENTION REFERS TO A CONTINUOUS PROCEDURE FOR THE POLYMERIZATION OF OLEFINA (S) USING A CATALYZER OR METALOCENE CATALYSTING SYSTEM IN A PASTE POLYMERIZATION PROCEDURE OR IN A CONTINUOUS GASEOUS PHASE. THE INVENTION IS INTENDED IN CONCRETE TO A GAS PHASE POLYMERIZATION PROCEDURE FOR POLYMERIZING ONE OR MORE OLEFINE (S) IN THE PRESENCE OF A METALOCENE CATALYSTING SYSTEM IN A FLUIDIZED MILK REACTOR IN THE ABSENCE OR WITH A LOW PERIOD OF WASTE.

polymerization

重合プロセス

(57)【要約】 （修正有） 【課題】１種以上のオレフィンを、単独で又は組み合わ せて、メタロセン触媒系の存在下に重合する連続式の方 法であって、掃去剤成分（ｓｃａｖｅｎｇｉｎｇ ｃｏ ｍｐｏｎｅｎｔ）を排除するか又は減少させることを含 む方法を提供する。 【解決手段】反応器中において、少なくとも１種のメタ ロセン触媒成分及び活性剤の存在下に流動床反応器中に おいて１種以上のオレフィンを重合するための連続式の 気相又はスラリー重合法であって、５０ｐｐｍ未満のオ レフィン性Ｃ １４ 〜Ｃ １８ オリゴマーしか製造されない ように掃去剤を反応器に導入することを含み、５００ｌ ｂ／時（２２７ｋｇ／時）乃至２００，０００ｌｂ／時 （９０，９００ｋｇ／時）又はそれ以上のポリマー生成 物を製造する方法。

Polymerization process

Polymersisationsverfahren

POLYMERIZATION PROCESS

Polymerization process

The present invention relates to a continuous process for the polymerization of olefin(s) utilizing a metallocene catalyst or catalyst system in a continuous slurry or gas phase polymerization process. The invention is more particularly drawn to a gas phase polymerization process for polymerizing one or more olefin(s) in the presence of a metallocene catalyst system in a fluidized bed reactor in the absence of or with a low amount of a scavenger.

Polymerization process

The present invention relates to a continuous process for the polymerization of olefin(s) utilizing a metallocene catalyst or catalyst system in a continuous slurry or gas phase polymerization process. The invention is more particularly drawn to a gas phase polymerization process for polymerizing one or more olefin(s) in the presence of a metallocene catalyst system in a fluidized bed reactor in the absence of or with a low amount of a scavenger.

중합방법(polymerization process)

Gas phase polymerization process

The present invention relates to a gas phase process for the polymerization of olefins utilizing a metallocene catalyst system to produce polymers having a low density and a relatively high molecular weight. More particularly, the gas phase process of the invention is directed forward the production of very low density polymers, for example rubbers, elastomers and plastomers.

Process for preparing a polymer

Method for controlling sheeting in gas phase reactors

Embodiments of the present invention relate to measuring and controlling static in a gas phase reactor polymerization. In particular, embodiments relate to monitoring carryover static in an entrainment zone during gas phase polymerization to determine the onset of reactor discontinuity events such as chunking and sheeting. Embodiments also relate to monitoring carryover static to determine the need for effective additions of continuity additives that minimize reactor static activity and thereby preventing discontinuity events.

Gas phase olefin polymerization process

Gas phase olefin polymerization process

The present invention relates to an alpha-olefin prepolymer catalytically active in an alpha-olefin (co-)polymerization comprising a transition metal, an organometallic compound and an antistatic agent. The prepolymer can be prepared by contacting the antistatic agent with a catalyst comprising the transition metal and the organometallic compound before or during an alpha-olefin prepolymerization. It can also be prepared by contacting the antistatic agent with an alpha-olefin prepolymer after a prepolymerization. It can also be prepared by a combination of the two methods. The prepolymer can be introduced into a gas phase (co-)polymerization medium for preparing polyolefin directly in a dry powder form, with a reduced amount of sheeting and agglomerates.

Method for controlling sheeting in gas phase reactors

Method for controlling sheeting in gas phase reactors

Embodiments of the present invention relate to measuring and controlling static in a gas phase reactor polymerization. In particular, embodiments relate to monitoring carryover static in an entrainment zone during gas phase polymerization to determine the onset of reactor discontinuity events such as chunking and sheeting. Embodiments also relate to monitoring carryover static to determine the need for effective additions of continuity additives that minimize reactor static activity and thereby preventing discontinuity events.

Method for controlling sheeting in a gas phase reactor

Embodiments of the present invention relate to measuring and controlling static in a gas phase reactor polymerization. In particular, embodiments relate to monitoring carryover static in an entrainment zone during gas phase polymerization to determine the onset of reactor discontinuity events such as chunking and sheeting. Embodiments also relate to monitoring carryover static to determine the need for effective additions of continuity additives that minimize reactor static activity and thereby preventing discontinuity events.

Method for controlling sheeting in gas phase reactors

본 발명의 실시양태은 기체상 중합 반응기에서 정적을 측정하고 조절하는 것에 관한 것이다. 특히, 본 발명의 실시양태은 전체 기체상 중합 반응기의 새로운 위치에서, 일반적으로는 메탈로센 촉매를 사용하는 중합에서 이송 정적을 모니터하여 청킹 및 시팅과 같은 반응기의 불연속 이벤트의 개시를 측정하는 것에 관한 것이다. 본 발명의 실시양태은 또한 이들 새로운 위치에서 이송 정적을 모니터하여 반응기 정적 활성을 최소화시키는 유효량의 연속 첨가제의 첨가에 대한 필요성을 측정함으로써, 상기와 같은 불연속 이벤트를 저지시키거나 최소화하는 것에 관한 것이다. Embodiments of the present invention relate to measuring and controlling static in a gas phase polymerization reactor. In particular, embodiments of the present invention relate to measuring the initiation of discontinuous events in reactors, such as chunking and sheeting, by monitoring transfer static in polymerization at a new location in the overall gas phase polymerization reactor, generally using metallocene catalysts. will be. Embodiments of the present invention also relate to preventing or minimizing such discrete events by monitoring the transfer static at these new locations to determine the need for the addition of an effective amount of continuous additive to minimize reactor static activity. 메탈로센 촉매, 시팅, 기체상 중합 반응기, 정적 Metallocene Catalyst, Sheeting, Gas Phase Polymerization Reactor, Static

METHOD TO CONTROL THE ACCUMULATION OF PLATES IN GASEOUS PHASE REACTORS

Las realizaciones se refieren a la medicion y el control de la estática en un reactor de polimerizacion de fase gaseosa. En particular, las realizaciones se refieren a monitorear la estática del remanente en una zona de entrada durante la polimerizacion de la fase gaseosa para determinar el inicio de los eventos de discontinuidad del reactor tales como los atascamientos y la acumulacion de placa. Las realizaciones también se refieren al monitoreo de la estática remanente para determinar la necesidad de adiciones efectivas de aditivos de continuidad que minimicen la actividad de estática del reactor y por lo tanto impidan los eventos de discontinuidad. The embodiments relate to the measurement and control of static in a gas phase polymerization reactor. In particular, the embodiments relate to monitoring the static of the remnant in an inlet zone during the polymerization of the gas phase to determine the onset of reactor discontinuity events such as blockages and plate accumulation. The embodiments also refer to the monitoring of the remaining static to determine the need for effective additions of continuity additives that minimize the static activity of the reactor and thus prevent discontinuity events.

Method for controlling sheeting in gas phase reactors

Process for leaf scale control in gas phase reactors

Method for controlling sheeting in gas phase reactors

Embodiments of the present invention relate to measuring and controlling static in a gas phase reactor polymerization. In particular, embodiments relate to monitoring carryover static in an entrainment zone during gas phase polymerization to determine the onset of reactor discontinuity events such as chunking and sheeting. Embodiments also relate to monitoring carryover static to determine the need for effective additions of continuity additives that minimize reactor static activity and thereby preventing discontinuity events.

Verfahren zur bekämpfung von schichtförmigen ablagerungen in gasphasenreaktoren

METHOD FOR CONTROLLING THE FORMATION OF SHEETS IN GASEOUS PHASE REACTORS.

Un procedimiento para introducir al menos un adi- tivo de continuidad que comprende uno o más compuestos se- leccionados del grupo consistente en aminas alcoxiladas, sales de ácidos carboxílicos, polisulfonas, poliaminas po- liméricas, ácidos sulfónicos, o sus combinaciones, en un sistema reactor en una cantidad que impida o invierta la formación de membranas de polímero producidas por una reacción de polimerización de al menos una olefina, en el que la reacción de polimerización se realiza en el sistema reactor, comprendiendo el sistema reactor un reactor de lecho fluidizado, una zona de arrastre, una alimentación del catalizador para introducir un sistema catalizador capaz de producir el polímero, al menos una alimentación de aditivo de continuidad para introducir el al menos un aditivo de continuidad, independientemente de la mezcla catalizadora, un medio para comprobar los niveles de actividad electrostática en la zona de arrastre, comprendiendo el procedimiento: (a) poner en contacto al menos una olefina con el sistema catalizador bajo condiciones de polimerización en el reactor de lecho fluidizado; (b) introducir el al menos un aditivo de continuidad en el sistema reactor en cualquier momento antes, durante o después del comienzo de la reacción de polimerización; (c) comprobar los niveles de actividad electrostática en la zona de arrastre; y (d) ajustar la cantidad de aditivo de continuidad introducida en el sistema reactor para mantener los niveles de actividad electrostática en la zona de arrastre en cero, o cerca de cero. A process for introducing at least one continuity additive comprising one or more compounds selected from the group consisting of alkoxylated amines, salts of carboxylic acids, polysulfones, polymeric polyamines, sulfonic acids, or combinations thereof, in a system reactor in an amount that prevents or reverses the formation of polymer membranes produced by a polymerization reaction of at least one olefin, in which the polymerization ...

Method for controlling sheeting in gasphase reactors

Method of sedimentation prevention in gas phase reactors

FIELD: chemistry. SUBSTANCE: invention concerns registration and elimination of static charge in olefin polymerisation in gas phase reactor. Invention claims method of adding at least one stabilising additive to reactor system in amount sufficient to prevent sedimentation of polymer obtained by polymerisation reaction of at least one olefin, where polymerisation reaction is performed in reactor system including reactor with pseudoliquefied layer, flush zone, catalyst feed device for adding catalytic system of polymerisation, at least one stabilising additive feed device for adding at least one stabilising additive separately from catalyst mix, and monitoring device for electrostatic activity level in flush zone. Method involves: (a) contact of at least one olefin to catalytic system in polymerisation conditions in reactor with pseudoliquefied layer; (b) adding at least one stabilising additive to reactor system at any period before, during or after beginning of polymerisation reaction; (c) electrostatic activity level monitoring in flush zone; and (d) quantity adjustment for at least one stabilising additive added to reactor system to maintain zero or near-zero electrostatic activity levels in flush zone. EFFECT: enhanced stability of catalyst efficiency, reduced tendency for bridging or sedimentation in reactor. 15 cl, 12 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2 348 650 (13) C2 (51) ÌÏÊ C08F C08F C08F B01J 2/34 (2006.01) 10/00 (2006.01) 10/02 (2006.01) 8/18 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2006127647/04, 15.12.2004 (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 15.12.2004 (30) Êîíâåíöèîííûé ïðèîðèòåò: 02.01.2004 US 60/534,026 14.12.2004 US 11/011,421 (43) Äàòà ïóáëèêàöèè çà âêè: 10.02.2008 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: RU 2124026 Ñ1, 27.12.1998. RU 2099358 C1, 20.12.1997. US 5332706 À, 26.07.1994. (85) Äàòà ïåðåâîäà çà âêè PCT ...

Method for controlling sheeting in gas phase reactors

Gas phase olefin polymerization process

The present invention relates to an alpha-olefin prepolymer catalytically active in an alpha-olefin (co-)polymerization comprising a transition metal, an organometallic compound and an antistatic agent. The prepolymer can be prepared by contacting the antistatic agent with a catalyst comprising the transition metal and the organometallic compound before or during an alpha-olefin prepolymerization. It can also be prepared by contacting the antistatic agent with an alpha-olefin prepolymer after a prepolymerization. It can also be prepared by a combination of the two methods. The prepolymer can be introduced into a gas phase (co-)polymerization medium for preparing polyolefin directly in a dry powder form, with a reduced amount of sheeting and agglomerates.

Method for controlling sheeting in gas phase reactors

Low temperature polymerization process

ABSTRACT OF THE INVENTION The hydrocarbon fluid friction reducing properties of copolymers of two or more alpha-monoolefins having 4 to 20 carbon atoms is improved by copolymerizing the monomers in the liquid state by means of a Ziegler catalyst at a temperature of about 0° C or lower.

METHOD FOR THE CONTINUOUS PRODUCTION OF COPOLYMERISATES OF ETHYLENE WITH HIGHER (ALPHA) MONOOLEFINS

Substantially linear copolymers of olefin and polar monomers. Methods of making the same.

Copolymers and terpolymers containing acyclic aliphatic olefin derived units and polar monomer derived units are disclosed. Also disclosed are methods of making such copolymers and terpolymers using late transition metal catalyst complexes.

Methods for determining transition metal compound concentrations inc multicomponent liquid systems

Methods for determining the concentration of transition metal compounds in a solution containing more than one transition metal compound are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems and for improving methods of preparing the multicomponent catalyst system.

Preparation of supported catalysts for polymerization

The invention relates to a process for preparing a supported catalyst, in particular for the polymerization and/or copolymerization of olefins, which comprises: a) preparing a hydrogel; b) milling the hydrogel to give a finely particulate hydrogel; c) producing a slurry based on the finely particulate hydrogel; d) drying the slurry comprising the finely particulate hydrogel to give the support for catalysts; e) producing the supported catalyst by applying at least one transition metal and/or at least one transition metal compound to the support for catalysts and, if appropriate, activating the applied metal and/or compound, wherein a finely particulate hydrogel in which at least 5% by volume of the particles, based on the total volume of the particles, have a particle size in the range from >0 μm to ≦3 μm; and/or at least 40% by volume of the particles, based on the total volume of the particles, have a particle size in the range from >0 μm to ≦12 μm, and/or at least 75% by volume of the particles, based on the total volume of the particles, have a particle size in the range from >0 μm to ≦35 μm, is produced in step b) and a support which can be prepared as set forth in steps a) to d) is used to produce catalysts in step e).

Low temperature polymerization process

The hydrocarbon fluid friction reducing properties of copolymers of two or more alpha-monoolefins having 4 to 20 carbon atoms is improved by copolymerizing the monomers in the liquid state by means of a Ziegler catalyst at a temperature of about 0° C. or lower.

Process for preparing polyolefins having a bimodal molecular weight distribution

A two-step polymerization process for producing a polyolefin having a bimodal molecular weight distribution is provided. In step one, under polymerization conditions, at least two different alpha-olefins are contacted with a catalyst system which comprises an aluminoxane and a metallocene, selected from the group consisting of mono, di, and tri-cyclopentadienyls and substituted cyclopentadienyls, of a metal selected from titanium, vanadium, chromium, zirconium, niobium, molybdenum, hafnium, tantalum, and tungsten, provided however if said metal is titanium then a metallocene of at least one other of said metals is present such that a first polymerization mixture is formed which comprises a low crystallinity, high molecular weight, copolymer, unreacted monomer, unreacted comonomer, and catalyst. This is followed by contacting, under polymerization conditions, hydrogen (and optionally additional alpha-olefin), with said first polymerization mixture which comprises copolymer, unreacted monomer, unreacted comonomer, and catalyst, such that a second polymerization mixture is formed which comprises a low crystallinity, high molecular weight copolymer, and a high crystallinity, low molecular weight homopolymer.

Ethylene copolymerization process

IN THE COPOLYMERIZATION OF ETHYLENE WITH AN A-OLEFIN, SUCH AS PROPYLENE, IN A SOLVENT, E.G., N-HEXANE,REACTOR FOULING DUE TO HIGH ETHYLENE-CONTENT POLYMER FORMATION CAN BE REDUCED BY FEEDING ETHYLENE TO THE REACTOR BOTH AS A VAPOR AND A LIQUID, THE RATIO OF LIQUID PROPYLENE TO LIQUID ETHYLENE MAINTAINED HIGH ENOUGH TO FORM SOLVENTSOLUBLE COPOLYMER.

聚合控制方法

本发明涉及在大型流化床反应器中以均匀的模式维持烯烃的连续气相（共）聚合，同时在聚合催化剂存在下以高时空产率和冷凝率操作的方法。

Methods for producing polymers with control over composition distribution

Methods for controlling a melt viscosity of a polyolefin, controlling comonomer distribution of a polyolefin, achieving a targeted melt viscosity of a polyolefin, and films made from such polyolefins are provided. The methods include contacting an olefin monomer and at least one comonomer with a catalyst system in the presence of a condensable fluid comprising a saturated hydrocarbon having from 2 to 8 carbon atoms. The catalyst system in one embodiment includes a hafnium metallocene catalyst component.

Narrow molecular weight distribution block polymers and process therefor

Extremely narrow molecular weight distribution block copolymers comprising isoprene are prepared utilizing multifunctional lithium based initiators and an initial diene block forming amount of butadiene.

Process for production of high molecular weight epdm elastomers using a metallocene-alumoxane catalyst system

ABSTRACT OF THE DISCLOSURE PROCESS FOR PRODUCTION OF HIGH MOLECULAR WEIGHT EPDM ELASTOMERS USING A METALLOCENE-ALUMOXANE CATALYST SYSTEM A process for producing a high molecular weight EPDM elastomer having low crystallinity using a bridged bis-metallocene-alumoxane catalyst wherein the metallocene component of the catalyst has the formula: wherein "M" is titanium, zirconium or hafnium; each "R1" independently is a C1 to C20 linear, branched or cyclic alkyl group or a C2 to C4 alkylene which forms a fused ring system; "R2" is a C1 to C6 linear, branched or cyclic alkylene group, an alkyl substituted silanylene group or an alkyl substituted silaalkylene group; each "X" independently is a halogen, hydride, alkyl, aryl or chelating group, and "y" is an integer of 2 to 4.

Process for preparing polyolefins having a bimodal molecular weight distribution.

Procédé de polymérisation en deux étapes servant à produire une polyoléfine à répartition bimodale du poids moléculaire. Au cours de la première étape, dans des conditions de polymérisation, au moins deux alpha-oléfines sont mises en contact avec un système catalyseur comprenant un aluminoxane et un métallocène, sélectionné dans le groupe composé de mono-, di- et tricyclopentadiényles et de cyclopentadiényles substitués, d'un métal sélectionné parmi titane, vanadium, chrome, zirconium, niobium, molybdène, hafnium, tantale et tungstène, à condition que lorsque ce métal est titane, il existe un métallocène d'au moins un autre desdits métaux, de sorte qu'il se forme un premier mélange de polymérisation qui comprend un copolymère faiblement cristallin de poids moléculaire élevé, un monomère n'ayant pas réagi, un comonomère n'ayant pas réagi et un catalyseur. Cette première étape est suivie par l'étape de mise en contact, dans des conditions de polymérisation, d'hydrogène (et éventuellement d'alpha-oléfine supplémentaire), avec le premier mélange de polymérisation comprenant un copolymère, un monomère n'ayant pas réagi, un comonomère n'ayant pas réagi et un catalyseur, de sorte qu'il se forme un deuxième mélange de polymérisation comprenant un copolymère faiblement cristallin de poids moléculaire élevé et un homopolymère fortement cristallin de faible poids moléculaire. Two-step polymerization process for producing a bimodal molecular weight polyolefin. During the first step, under polymerization conditions, at least two alpha-olefins are brought into contact with a catalyst system comprising an aluminoxane and a metallocene, selected from the group consisting of mono-, di- and tricyclopentadienyls and cyclopentadienyls substituted, of a metal selected from titanium, vanadium, chromium, zirconium, niobium, molybdenum, hafnium, tantalum and tungsten, provided that when this metal is titanium, there is a metallocene of at least ...

Process for preparing polyolefins having a bimodal molecular weight distribution

A two-step polymerization process for producing a polyolefin having a bimodal molecular weight distribution is provided. In step one, under polymerization conditions, at least two different alpha-olefins are contacted with a catalyst system which comprises an aluminoxane and a metallocene, selected from the group consisting of mono, di, and tri-cyclopentadienyls and substituted cyclopentadienyls, of a metal selected from titanium, vanadium, chromium, zirconium, niobium, molybdenum, hafnium, tantalum, and tungsten, provided however if said metal is titanium then a metallocene of at least one other of said metals is present such that a first polymerization mixture is formed which comprises a low crystallinity, high molecular weight, copolymer, unreacted monomer, unreacted comonomer, and catalyst. This is followed by contacting, under polymerization conditions, hydrogen (and optionally additional alpha-olefin), with said first polymerization mixture which comprises copolymer, unreacted monomer, unreacted comonomer, and catalyst, such that a second polymerization mixture is formed which comprises a low crystallinity, high molecular weight copolymer, and a high crystallinity, low molecular weight homopolymer.

Cyclic olefin copolymers, compositions and molded articles comprising the copolymers

A novel cyclic olefin/alpha-olefin copolymer prepared by the process mentioned below, compositions and molded articles comprising the novel copolymer, are disclosed. In the process for producing a cylcic olefin based polymer according to the present invention, homopolymerization of a cyclic olefin or copolymerization of a cyclic olefin and an alpha-olefin is effected in the presence of a catalyst comprising, as main ingredients, the following Compounds (A) and (B), and optionally Compound (C): (A) a transition metal compound; (B) a compound capable of forming an ionic complex when reacted with a transition metal compound; and (C) an organoaluminum compound.

Process for producing polar olefin copolymer and polar olefin copolymer obtained thereby

A process for producing a polar olefin copolymer comprises copolymerizing a non-polar olefin and a polar olefin in the presence of a transition metal compound selected from Groups 4, 5, 6 and 11 of the periodic table, which is represented by the following formula (IV): wherein M′ is a transition metal atom selected from Groups 4, 5, 6 and 11 of the periodic table, m is an integer of 1 to 6, A is —O—, —Si—, —Se—, —N(R 6 )—, n is a number satisfying a valence of M′, R 1 to R 4 and R 6 are each a hydrogen atom, a halogen atom, a hydrocarbon group and the like, and X is a halogen atom, an oxygen atom, a hydrocarbon group and the like, and at least one compound (B) selected from the group consisting of an organometallic compound (B-1), an organoaluminum oxy-compound (B-2) and an ionic ionizing compound (B-3). Therefore, the process is capable of obtaining a polar olefin copolymer having excellent properties under mild polymerization conditions.

Cyclic olefin copolymers, compositions and molded articles comprising the copolymers

Cycloolefin copolymers, method for their manufacture, their application and catalysts

Preparation of cycloolefin copolymers (A) comprises polymerization of at least one cycloolefin compound (I) with at least one 1-olefin compound (II) in the presence of a catalyst system, which contains metallocene compounds (III). Preparation of cycloolefin copolymers (A) comprises polymerization of at least one cycloolefin compound of formula (I) with at least one 1-olefin compound of formula (CH 2=C(R 21>)(R 22>)) (II) in the presence of a catalyst system, which contains metallocene compounds of formula ((L 1>)(L 2>)M(R 31>)(R 32>)) (III). R 1>-R 6>H, halo, cyclic or acyclic branched or straight-chain aliphatic hydrocarbon groups, aromatic hydrocarbon groups or alkoxy groups; R 7>-R 16>H or aliphatic hydrocarbon groups; either R 17>-R 20>H, halo or aliphatic hydrocarbon groups; or R 17>R 19>single ring or a ring system comprising many rings (optionally saturated); n : 0 or 1; m : 0 or positive integer; R 21>, R 22>H or 1-20C alkyl; M : metal of group IIIb, IVb, Vb or VIb of the periodic table of the elements; R 31>, R 32>H, halo, 1-40C alkyl (optionally saturated), 1-40C alkoxy, 6-10C-aryl, 6-10C aryloxy, 7-40C arylalkyl or 7-40C alkylaryl; and L 1>, L 2>ligands containing at least one cyclopentadienyl ring. Provided that the radicals R 31>, R 32>, L 1> and L 2> are selected so that the metallocene compound has no C s symmetry in relation to the centroid-M-centroid plane. Independent claims are included for: (1) a metallocene compound of formula (IV); and (2) a cycloolefin copolymer (A) prepared by non-ring-opening polymerization of (I) with (II), where (A) contains racemic diads of repeating poly cyclic units and additionally racemic triads of repeating poly cyclic units. R 313>, R313a, R 311>H, 1-4C alkyl or aryl; and R312 : H or 1-4C alkyl. Provided that at least one of R 311>-R 313> or R313a is aryl, preferably phenyl; or R 311> or R 312> is tert-butyl. [Image] [Image] .

Process for producing olefin / 3-methyl-1-butene copolymers

The present invention relates to a process for copolymerizing a monomer selected from C 2 to C 10 olefin with 3-methyl-1-butene. High incorporation rate of 3-methyl-1-butene in the copolymer is obtained in particular at low content of 3-methyl-1-butene in the feed. In particular, catalysts of formula (I) or (II) are suitable for the production of such copolymer:

Process for producing cycloolefin polymer, cycloolefin copolymer, and composition and molding prepared therefrom

An efficient process for producing cycloolefin polymer and cycloolefin/α-olefin copolymer without causing any ring opening of the cycloolefin; novel cycloolefin/α-olefin copolymer produced thereby; and composition and molding prepared from said copolymer. The production process comprises conducting the homopolymerization of cycloolefin or the copolymerization thereof with α-olefin in the presence of a catalyst based on the following components (A) and (B) or (A), (B) and (C); A: transition metal compound, B: compound which forms ionic complex by the reaction with transition metal compound, and C: organoaluminum compound.

Cyclic olefin copolymers, compositions and molded articles comprising the copolymers

A novel cyclic olefin/alpha-olefin copolymer prepared by the process mentioned below, compositions and molded articles comprising the novel copolymer, are disclosed. In the process for producing a cylcic olefin based polymer according to the present invention, homopolymerization of a cyclic olefin or copolymerization of a cyclic olefin and an alpha-olefin is effected in the presence of a catalyst comprising, as main ingredients, the following Compounds (A) and (B), and optionally Compound (C): (A) a transition metal compound; (B) a compound capable of forming an ionic complex when reacted with a transition metal compound; and (C) an organoaluminum compound.

Cycloolefin copolymers, process for their preparation, their use and catalysts

Beschrieben werden Cycloolefin-Copolymere, die sich durch Anwesenheit von racemischen Diaden von wiederkehrenden polycyclischen Einheiten und zusätzlich von racemischen Triaden von wiederkehrenden polycyclischen Einheiten auszeichnen. Diese Copolymere können durch Copolymerisation von polycyclischen Olefinen mit linearen Olefinen in Gegenwart von Metallocenkatalysatoren hergestellt werden, die keine C<SUB>s</SUB>-Symmetrie bezüglich der Ebene Zentroid-M-Zentroid aufweisen. Die neuen Copolymere können zur Herstellung von Formkörpern, insbesondere von Folien, eingesetzt werden. Disclosed are cycloolefin copolymers characterized by the presence of racemic diads of recurring polycyclic moieties and, in addition, racemic triads of recurring polycyclic moieties. These copolymers can be made by copolymerization of polycyclic olefins with linear olefins in the presence of metallocene catalysts that do not have C <SUB> s </ SUB> symmetry with respect to the centroid M-centroid plane. The novel copolymers can be used for the production of moldings, in particular of films.

Process for producing cyclic olefin based polymers, cyclic olefin copolymers, compositions and molded articles comprising the copolymers

A process for effectively producing a cyclic olefin polymer and a cyclic olefin/alpha-olefin copolymer without opening the cyclic olefin, is disclosed. Further, a novel cyclic olefin/alpha-olefin copolymer prepared by the above-mentioned process, compositions and molded articles comprising the novel copolymer, are also disclosed. In the process for producing a cylcic olefin based polymer according to the present invention, homopolymerization of a cyclic olefin or copolymerization of a cyclic olefin and an alpha-olefin is effected in the presence of a catalyst comprising, as main ingredients, the following Compounds (A) and (B), and optionally Compound (C): (A) a transition metal compound; (B) a compound capable of forming an ionic complex when reacted with a transition metal compound; and (C) an organoaluminum compound.

Process for producing polar olefin copolymer and polar olefin copolymer obtained thereby

A process for producing a polar olefin copolymer comprises copolymerizing a non-polar olefin and a polar olefin in the presence of a transition metal compound selected from Groups 4, 5, 6 and 11 of the periodic table, which is represented by the following formula (IV): wherein M′ is a transition metal atom selected from Groups 4, 5, 6 and 11 of the periodic table, m is an integer of 1 to 6, A is —O—, —Si—, —Se—, —N(R 6 )—, n is a number satisfying a valence of M′, R 1 to R 4 and R 6 are each a hydrogen atom, a halogen atom, a hydrocarbon group and the like, and X is a halogen atom, an oxygen atom, a hydrocarbon group and the like, and at least one compound (B) selected from the group consisting of an organometallic compound (B-1), an organoaluminum oxy-compound (B-2) and an ionic ionizing compound (B-3). Therefore, the process is capable of obtaining a polar olefin copolymer having excellent properties under mild polymerization conditions.

Process for producing cyclic olefin based polymers, cyclic olefin copolymers, compositions and molded articles comprising the copolymers

A process for effectively producing a cyclic olefin polymer and a cyclic olefin/alpha-olefin copolymer without opening the cyclic olefin, is disclosed. Further, a novel cyclic olefin/alpha-olefin copolymer prepared by the above-mentioned process, compositions and molded articles comprising the novel copolymer, are also disclosed. In the process for producing a cylcic olefin based polymer according to the present invention, homopolymerization of a cyclic olefin or copolymerization of a cyclic olefin and an alpha-olefin is effected in the presence of a catalyst comprising, as main ingredients, the following Compounds (A) and (B), and optionally Compound (C): (A) a transition metal compound; (B) a compound capable of forming an ionic complex when reacted with a transition metal compound; and (C) an organoaluminum compound.

Process for producing cyclic olefin based polymers

A process for effectively producing a cyclic olefin polymer and a cyclic olefin/alpha-olefin copolymer without opening the cyclic olefin, is disclosed. Further, a novel cyclic olefin/alpha-olefin copolymer prepared by the above-mentioned process, compositions and molded articles comprising the novel copolymer, are also disclosed. In the process for producing a cylcic olefin based polymer according to the present invention, homopolymerization of a cyclic olefin or copolymerization of a cyclic olefin and an alpha-olefin is effected in the presence of a catalyst comprising, as main ingredients, the following Compounds (A) and (B), and optionally Compound (C): (A) a transition metal compound; (B) a compound capable of forming an ionic complex when reacted with a transition metal compound; and (C) an organoaluminum compound.

Propylene-styrene copolymerisation process

Provided is a method for the production of a copolymer of styrene and propylene, which method comprises copolymerising styrene and propylene in the presence of a metallocene catalyst, wherein the metallocene catalyst comprises a metallocene having the either formula (I): R'(CpRm)(FluR'n)MQ2 wherein Cp comprises a cyclo pentad ienyl ring; Flu comprises a fluorenyl ring; R' comprises a structural bridge imparting stereorigidity to the component; each R is the same or different and is an organic group; m is an integer of from 0-4; each R' is the same or different and is an organic group; n is an integer of from 0-8; M is a metal atom from group IVB of the Periodic Table or is vanadium; and each Q is a hydrocarbon having from 1-20 carbon atoms or is a halogen; or formula (II): R'(FluR'n)XR&dollar;MQp (II) wherein R(FluR'n), R’’, M and Q are as defied hcre-above; R&dollar; is hydrogen or a hydrocarbyl group having from 1-20 carbon atoms; X is a heteroatom from group 15 or 16 of the Periodic Table.

COPOLYMER, PREPARATION METHOD THEREOF, AND MOLDED PRODUCT OBTAINED WITH THIS COPOLYMER

Process for production of high molecular weight epdm elastomers using a metallocene-alumoxane catalyst system

Halo derivatives of vanadium organophosphates

A composition having the general formula: