JP2000508367A5 - - Google Patents

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Publication number
JP2000508367A5
JP2000508367A5 JP1997542528A JP54252897A JP2000508367A5 JP 2000508367 A5 JP2000508367 A5 JP 2000508367A5 JP 1997542528 A JP1997542528 A JP 1997542528A JP 54252897 A JP54252897 A JP 54252897A JP 2000508367 A5 JP2000508367 A5 JP 2000508367A5
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JP
Japan
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JP1997542528A
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English (en)
Japanese (ja)
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JP2000508367A (ja
JP3901221B2 (ja
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Priority claimed from PCT/US1997/008206 external-priority patent/WO1997044371A1/en
Publication of JP2000508367A publication Critical patent/JP2000508367A/ja
Publication of JP2000508367A5 publication Critical patent/JP2000508367A5/ja
Application granted granted Critical
Publication of JP3901221B2 publication Critical patent/JP3901221B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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JP54252897A 1996-05-17 1997-05-16 分子量の最大値が最大コモノマー含有量を有する組成物部分中に存在するポリオレフィン組成物 Expired - Fee Related JP3901221B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US1714796P 1996-05-17 1996-05-17
US60/017,147 1996-05-17
PCT/US1997/008206 WO1997044371A1 (en) 1996-05-17 1997-05-16 Polyolefin composition with molecular weight maximum occuring in that part of the composition that has the highest comonomer content

Publications (3)

Publication Number Publication Date
JP2000508367A JP2000508367A (ja) 2000-07-04
JP2000508367A5 true JP2000508367A5 (ref) 2005-01-13
JP3901221B2 JP3901221B2 (ja) 2007-04-04

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ID=21780991

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54252897A Expired - Fee Related JP3901221B2 (ja) 1996-05-17 1997-05-16 分子量の最大値が最大コモノマー含有量を有する組成物部分中に存在するポリオレフィン組成物

Country Status (30)

Country Link
US (1) US6462161B1 (ref)
EP (1) EP0898585B1 (ref)
JP (1) JP3901221B2 (ref)
CN (1) CN1093141C (ref)
AR (1) AR007176A1 (ref)
AT (1) ATE212648T1 (ref)
AU (1) AU739861B2 (ref)
BR (1) BR9709008A (ref)
CA (1) CA2255756C (ref)
CO (1) CO4990981A1 (ref)
CZ (1) CZ299688B6 (ref)
DE (1) DE69710189T2 (ref)
DZ (1) DZ2240A1 (ref)
EG (1) EG21900A (ref)
ES (1) ES2172790T3 (ref)
HU (1) HU223951B1 (ref)
IL (1) IL127069A0 (ref)
MY (1) MY121673A (ref)
NO (1) NO985328L (ref)
NZ (1) NZ332760A (ref)
PL (1) PL188465B1 (ref)
PT (1) PT898585E (ref)
RU (1) RU2190632C2 (ref)
SA (1) SA97180351B1 (ref)
SK (1) SK284880B6 (ref)
TR (1) TR199802355T2 (ref)
TW (1) TW515819B (ref)
UA (1) UA68331C2 (ref)
WO (1) WO1997044371A1 (ref)
ZA (1) ZA974267B (ref)

Families Citing this family (126)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6506866B2 (en) * 1994-11-17 2003-01-14 Dow Global Technologies Inc. Ethylene copolymer compositions
JPH09309926A (ja) * 1996-05-17 1997-12-02 Dow Chem Co:The エチレン共重合体の製造方法
US6416833B1 (en) 1997-08-22 2002-07-09 Dupont Canada Inc. Interpolymer film pouch
CA2245375C (en) * 1998-08-19 2006-08-15 Nova Chemicals Ltd. Dual reactor polyethylene process using a phosphinimine catalyst
WO2000014129A1 (en) * 1998-09-04 2000-03-16 The Dow Chemical Company Long chain branched ethylene homopolymer made by a slurry process and blends thereof
JP2002524621A (ja) 1998-09-16 2002-08-06 ザ ダウ ケミカル カンパニー 機能化した触媒担体及び担持触媒系
FI990948A0 (fi) * 1999-04-27 1999-04-27 Borealis As Ei-ristisilloitettu polyeteeni
AU2005200546B2 (en) * 1999-05-05 2007-03-29 Bp Chemicals Limited Ethylene copolymers and films thereof
ATE420902T1 (de) * 1999-05-05 2009-01-15 Ineos Europe Ltd Ethylencopolymere und daraus hergestellte filme
US7041617B2 (en) 2004-01-09 2006-05-09 Chevron Phillips Chemical Company, L.P. Catalyst compositions and polyolefins for extrusion coating applications
UA74188C2 (uk) 2000-06-01 2005-11-15 Бп Кемікалз Лімітед Поліетиленові плівки
ES2361734T3 (es) 2001-07-19 2011-06-21 Univation Technologies Llc Películas de polietileno con propiedades físicas mejoradas.
US6936675B2 (en) 2001-07-19 2005-08-30 Univation Technologies, Llc High tear films from hafnocene catalyzed polyethylenes
CN1301292C (zh) * 2001-08-17 2007-02-21 陶氏环球技术公司 双峰聚乙烯组合物及其制品和该组合物的应用
WO2003037937A1 (en) 2001-10-18 2003-05-08 The Dow Chemical Company Diene functionalized catalyst supports and supported catalyst compositions
EP1312625A1 (en) * 2001-11-20 2003-05-21 BP Chemicals SNC Gas phase polymerization process
TWI300782B (en) * 2002-08-29 2008-09-11 Ineos Europe Ltd Supported polymerisation catalysts
JP4596510B2 (ja) * 2002-11-18 2010-12-08 旭化成ケミカルズ株式会社 ポリエチレン組成物
SE0300195D0 (sv) 2003-01-28 2003-01-28 Borealis Tech Oy Coating composition, method of preparation thereofand substrate coated therewith
JP4260501B2 (ja) * 2003-02-07 2009-04-30 株式会社プライムポリマー 二軸延伸用ポリエチレン系樹脂組成物および延伸フィルム
WO2004094487A1 (en) 2003-03-21 2004-11-04 Dow Global Technologies, Inc. Morphology controlled olefin polymerization process
JP4903357B2 (ja) * 2003-03-28 2012-03-28 住友化学株式会社 エチレン重合体
US6953764B2 (en) 2003-05-02 2005-10-11 Dow Global Technologies Inc. High activity olefin polymerization catalyst and process
EP1655336B1 (en) * 2004-11-03 2007-01-10 Borealis Technology Oy Multimodal polyethylene composition for injection moulded caps and closure articles
US7598327B2 (en) 2004-11-10 2009-10-06 Chevron Phillips Chemical Company Lp Method for polymerizing olefins in a gas phase reactor using a seedbed during start-up
GB0425443D0 (en) 2004-11-18 2004-12-22 Bp Chem Int Ltd Supported polymerisation catalysts
EP1848750B2 (en) * 2005-02-09 2024-12-25 Ineos Sales (UK) Limited Copolymers and films thereof
PL1712574T3 (pl) 2005-04-12 2008-08-29 Borealis Tech Oy Folia polietylenowa o ulepszonych właściwościach przetwórczych i mechanicznych
US7312283B2 (en) * 2005-08-22 2007-12-25 Chevron Phillips Chemical Company Lp Polymerization catalysts and process for producing bimodal polymers in a single reactor
US7625982B2 (en) * 2005-08-22 2009-12-01 Chevron Phillips Chemical Company Lp Multimodal polyethylene compositions and pipe made from same
US7226886B2 (en) 2005-09-15 2007-06-05 Chevron Phillips Chemical Company, L.P. Polymerization catalysts and process for producing bimodal polymers in a single reactor
EP1772486A1 (en) 2005-10-07 2007-04-11 Borealis Technology Oy Polyethylene composition for injection moulding with improved stress crack/stiffness relation and impact resistance
EP1772485A1 (en) 2005-10-07 2007-04-11 Borealis Technology Oy Polyethylene composition with improved stress crack resistance/stiffness relation for blow moulding
EP1803747A1 (en) 2005-12-30 2007-07-04 Borealis Technology Oy Surface-modified polymerization catalysts for the preparation of low-gel polyolefin films
US7619047B2 (en) 2006-02-22 2009-11-17 Chevron Phillips Chemical Company, Lp Dual metallocene catalysts for polymerization of bimodal polymers
EP1834983A1 (en) * 2006-03-14 2007-09-19 Ineos Europe Limited Polymer films
GB0610668D0 (en) * 2006-05-30 2006-07-12 Nova Chem Int Sa Supported antistatic polymerization catalysts
ATE535569T1 (de) 2006-12-29 2011-12-15 Borealis Tech Oy Polyethylenmassen für blasgeformte transportverpackungsartikel
EP1980577A1 (en) * 2007-04-10 2008-10-15 Borealis Technology OY Pipes comprising ß-nucleated propylene copolymers
EP2147027B1 (en) * 2007-05-16 2017-09-27 LG Chem, Ltd. Long chain-branched ethylene-1-butene copolymer
TW200932762A (en) 2007-10-22 2009-08-01 Univation Tech Llc Polyethylene compositions having improved properties
EP2058337A1 (en) * 2007-11-06 2009-05-13 Total Petrochemicals Research Feluy Process for preparing a polyethylene resin in a double loop reactor with a mixture of bis-indenyl and bis-tetrahydroindenyl catalyst components
TW200936619A (en) * 2007-11-15 2009-09-01 Univation Tech Llc Polymerization catalysts, methods of making, methods of using, and polyolefin products made therefrom
US8431661B2 (en) 2010-10-21 2013-04-30 Exxonmobil Chemical Patents Inc. Polyethylene and process for production thereof
US8507103B2 (en) 2007-12-18 2013-08-13 Exxonmobil Chemical Patents Inc. Polyethylene and process for production thereof
US8436114B2 (en) 2010-10-21 2013-05-07 Exxonmobil Chemical Patents Inc. Polyethylene and process for production thereof
JP5714913B2 (ja) 2008-03-13 2015-05-07 ダウ グローバル テクノロジーズ エルエルシー 他の1種のポリマーと組み合わせた、長鎖分岐(lcb)、ブロック、または相互連結エチレンコポリマー
EP2119732A1 (en) 2008-05-16 2009-11-18 Borealis Technology Oy Metallocene catalyst compositions with improved properties, process for its preparation and use for preparing polyolefin homo- or copolymers
EP2177548A1 (en) 2008-10-14 2010-04-21 Ineos Europe Limited Copolymers and films thereof
JP2010159398A (ja) * 2008-12-10 2010-07-22 Sumitomo Chemical Co Ltd 放射線照射用包装材、包装食品の殺虫又は殺菌方法、包装農作物の発芽抑制方法、包装食品、及び、包装農作物
AU2014215964B2 (en) * 2008-12-18 2015-05-28 Chevron Phillips Chemical Company Lp Process for producing broader molecular weight distribution polymers with a reverse comonomer distribution and low levels of long chain branches
WO2010071798A1 (en) 2008-12-18 2010-06-24 Univation Technologies, Llc Method for seed bed treatment for a polymerization reaction
US8114946B2 (en) 2008-12-18 2012-02-14 Chevron Phillips Chemical Company Lp Process for producing broader molecular weight distribution polymers with a reverse comonomer distribution and low levels of long chain branches
RU2527945C2 (ru) 2009-01-08 2014-09-10 Юнивейшн Текнолоджиз, Ллк Добавка для процессов полимеризации полиолефинов
WO2010080871A1 (en) 2009-01-08 2010-07-15 Univation Technologies, Llc Additive for gas phase polymerization processes
EP2417195B1 (en) 2009-04-09 2013-03-20 Borealis AG Thermoplastic polyolefin composition
EP2456796B1 (en) 2009-07-23 2013-07-17 Univation Technologies, LLC Polymerization reaction system
RU2549541C2 (ru) * 2009-07-28 2015-04-27 Юнивейшн Текнолоджиз, Ллк Способ полимеризации с использованием нанесенного катализатора с затрудненной геометрией
WO2011078923A1 (en) 2009-12-23 2011-06-30 Univation Technologies, Llc Methods for producing catalyst systems
EP2348057A1 (en) 2010-01-21 2011-07-27 INEOS Manufacturing Belgium NV Novel polymers
EP2354183B1 (en) 2010-01-29 2012-08-22 Borealis AG Moulding composition
RU2540073C2 (ru) 2010-01-29 2015-01-27 Бореалис Аг Повышение однородности смесей полиэтиленов
PL2354184T3 (pl) 2010-01-29 2013-01-31 Borealis Ag Tłoczywo polietylenowe o ulepszonym stosunku odporność na pękanie /sztywność i ulepszone udarności
US8383754B2 (en) 2010-04-19 2013-02-26 Chevron Phillips Chemical Company Lp Catalyst compositions for producing high Mz/Mw polyolefins
EP2410011A1 (en) 2010-07-23 2012-01-25 INEOS Manufacturing Belgium NV Polyethylene composition
US8623980B2 (en) * 2010-12-21 2014-01-07 Exxonmobil Research And Engineering Company Process for making a saturated dendritic hydrocarbon polymer
US8703884B2 (en) 2010-12-22 2014-04-22 Univation Technologies, Llc Additive for polyolefin polymerization processes
US9096752B2 (en) 2011-08-19 2015-08-04 Borealis Ag Heterophasic system with improved surface properties
WO2013029223A1 (en) * 2011-08-26 2013-03-07 Dow Global Technologies Llc Bioriented polyethylene film
BR112014012268B1 (pt) * 2011-11-23 2020-09-29 Dow Global Technologies Llc Polímero a base de etileno, composição e artigo
WO2013079654A1 (en) 2011-12-01 2013-06-06 Ineos Europe Ag Polymer blends
CN104105722B (zh) * 2011-12-14 2016-11-09 英尼奥斯欧洲股份公司 聚合物
EP2610269A1 (en) 2011-12-28 2013-07-03 Saudi Basic Industries Corporation Catalyst composition and method for preparing the same
US20150030852A1 (en) * 2012-01-26 2015-01-29 Ineos Europe Ag Copolymers for wire and cable applications
US9115233B2 (en) 2012-06-21 2015-08-25 Nova Chemicals (International) S.A. Ethylene copolymer compositions, film and polymerization processes
CA2798855C (en) 2012-06-21 2021-01-26 Nova Chemicals Corporation Ethylene copolymers having reverse comonomer incorporation
US8895679B2 (en) 2012-10-25 2014-11-25 Chevron Phillips Chemical Company Lp Catalyst compositions and methods of making and using same
US8937139B2 (en) 2012-10-25 2015-01-20 Chevron Phillips Chemical Company Lp Catalyst compositions and methods of making and using same
CA2835740C (en) 2012-12-14 2020-12-29 Nova Chemicals Corporation Ethylene copolymer compositions, film and polymerization processes
EP2746320A1 (en) 2012-12-20 2014-06-25 Basell Polyolefine GmbH Polyethylene composition having high mechanical properties
CA2800056A1 (en) 2012-12-24 2014-06-24 Nova Chemicals Corporation Polyethylene blend compositions
US9650453B2 (en) 2012-12-28 2017-05-16 Univation Technologies, Llc Methods of integrating aluminoxane production into catalyst production
KR102214265B1 (ko) 2013-01-14 2021-02-10 유니베이션 테크놀로지즈, 엘엘씨 증가된 생산성을 갖는 촉매 시스템의 제조 방법
US8877672B2 (en) 2013-01-29 2014-11-04 Chevron Phillips Chemical Company Lp Catalyst compositions and methods of making and using same
US9034991B2 (en) 2013-01-29 2015-05-19 Chevron Phillips Chemical Company Lp Polymer compositions and methods of making and using same
SG11201509210UA (en) 2013-05-09 2015-12-30 Borealis Ag Hdpe
EP3296330A1 (en) * 2013-07-09 2018-03-21 Dow Global Technologies Llc Ethylene/alpha-olefin interpolymers with improved pellet flowability
KR101657680B1 (ko) 2013-09-30 2016-09-19 주식회사 엘지화학 폴리올레핀
BR112016008827B1 (pt) 2013-10-25 2021-02-23 Dsm Ip Assets B.V polietileno particulado de peso molecular muito elevado (puhmwpe), processos para preparar o referido polietileno e para produzir artigos de puhmwpe moldados e produto compreendendo os referidos artigos moldados
EP2878623B1 (en) 2013-11-28 2018-07-11 Abu Dhabi Polymers Company Limited (Borouge) Multimodal polymer
ES2621732T3 (es) 2014-01-06 2017-07-05 Borealis Ag Mezcla de polímero: HDPE con copolímero de etileno-norborneno o propileno-norborneno
US9765164B2 (en) 2014-06-27 2017-09-19 Dow Global Technologies Llc Polyolefin compositions and uses thereof
EP3040375B2 (en) 2014-12-30 2025-06-18 Abu Dhabi Polymers Co. Ltd (Borouge) LLC. Hdpe
ES2646937T5 (es) 2014-12-30 2021-05-07 Abu Dhabi Polymers Company Ltd Borouge L L C Polietileno multimodal
EP3247548B1 (en) 2015-01-21 2021-09-01 Univation Technologies, LLC Methods for controlling polymer chain scission
CA2974122C (en) 2015-01-21 2023-09-19 Univation Technologies, Llc Methods for gel reduction in polyolefins
BR112017022520B1 (pt) 2015-04-23 2022-06-14 Univation Technologies, Llc Copolímero de polietileno
US10570228B2 (en) 2015-07-20 2020-02-25 Exxonmobil Chemical Patents Inc. High softening point hydrocarbon resins
EP3327072B1 (en) 2016-11-24 2019-08-14 Abu Dhabi Polymers Co. Ltd (Borouge) Llc. Polyethylene composition for drip irrigation pipes or tapes
EP3335874A1 (en) 2016-12-15 2018-06-20 Borealis AG Biaxially oriented articles comprising multimodal polyethylene polymer
CN110636938A (zh) 2017-03-24 2019-12-31 博里利斯股份公司 取向多层阻挡膜
CA2969627C (en) * 2017-05-30 2024-01-16 Nova Chemicals Corporation Ethylene copolymer having enhanced film properties
EP3710500A1 (en) 2017-11-15 2020-09-23 ExxonMobil Chemical Patents Inc. Polymerization processes
EP3710502A1 (en) 2017-11-15 2020-09-23 ExxonMobil Chemical Patents Inc. Polymerization processes
US10954328B2 (en) 2017-11-15 2021-03-23 Exxonmobil Chemical Patents Inc. Polymerization processes
EP3728350B1 (en) 2017-12-18 2024-03-13 Dow Global Technologies LLC Zirconocene-titanocene catalyst system
KR102671695B1 (ko) 2018-11-29 2024-06-05 롯데케미칼 주식회사 우수한 용융 특성을 지닌 폴리프로필렌 수지 및 그 제조 방법
CN113661062B (zh) 2019-04-09 2023-05-23 博里利斯股份公司 整理收缩薄膜
EP3980265B1 (en) 2019-06-07 2025-05-14 Borealis AG Multilayer machine direction oriented films for sealing
CA3185818A1 (en) * 2020-07-14 2022-01-20 Nova Chemicals Corporation Solution phase polymerization process
CN116323196B (zh) 2020-08-12 2026-03-24 博里利斯股份公司 具有低密封起始温度的多层膜
KR102611798B1 (ko) 2020-11-23 2023-12-12 한화솔루션 주식회사 올레핀계 중합체, 그로부터 제조된 필름 및 그 제조방법
EP4112491A1 (en) 2021-06-29 2023-01-04 Abu Dhabi Polymers Company Limited (Borouge) LLC Bottle closure assembly
EP4151677A1 (en) 2021-09-21 2023-03-22 Borealis AG Biaxially oriented film
EP4163323B1 (en) 2021-10-07 2024-05-29 Borealis AG Biaxially oriented film
EP4163309A1 (en) 2021-10-07 2023-04-12 Borealis AG Hdpe
EP4239014A1 (en) 2022-03-02 2023-09-06 Borealis AG Film comprising a polyethylene composition
EP4239015B1 (en) 2022-03-02 2024-05-22 Borealis AG Monoaxially oriented film comprising a polyethylene composition
WO2023194335A1 (en) 2022-04-06 2023-10-12 Borealis Ag Multilayered film
EP4306442B1 (en) 2022-07-14 2025-05-07 Borealis AG Composition
EP4306444B1 (en) 2022-07-14 2025-03-05 Borealis AG Composition
EP4386046A1 (en) 2022-12-16 2024-06-19 Borealis AG Composition
EP4389776A1 (en) 2022-12-20 2024-06-26 Borealis AG Process
EP4431552B1 (en) 2023-03-14 2025-07-30 Borealis GmbH Biaxially oriented polyethylene film with improved stiffness
EP4455171A1 (en) 2023-04-28 2024-10-30 Borealis AG Moulded articles
WO2025003435A1 (en) 2023-06-30 2025-01-02 Borealis Ag Process

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5264405A (en) * 1989-09-13 1993-11-23 Exxon Chemical Patents Inc. Monocyclopentadienyl titanium metal compounds for ethylene-α-olefin-copolymer production catalysts
US5382631A (en) * 1988-09-30 1995-01-17 Exxon Chemical Patents Inc. Linear ethylene interpolymer blends of interpolymers having narrow molecular weight and composition distributions
US5382630A (en) * 1988-09-30 1995-01-17 Exxon Chemical Patents Inc. Linear ethylene interpolymer blends of interpolymers having narrow molecular weight and composition distribution
FI902679A0 (fi) * 1988-09-30 1990-05-29 Exxon Chemical Patents Inc Lineaera etylenkopolymerer av kopolymerer med smal molekylvikt- och kompositionsdistribution.
NZ235032A (en) * 1989-08-31 1993-04-28 Dow Chemical Co Constrained geometry complexes of titanium, zirconium or hafnium comprising a substituted cyclopentadiene ligand; use as olefin polymerisation catalyst component
IT1243430B (it) * 1990-09-28 1994-06-10 Himont Inc Composizioni di polimeri cristallini del propilene aventi bassa temperatura
US5281679A (en) * 1991-11-07 1994-01-25 Exxon Chemical Patents Inc. Catalyst and method of broadening polymer molecular weight distribution and increasing polymer tensile impact strength and products made thereof
WO1994003909A1 (fr) * 1992-07-30 1994-02-17 Kabushiki Kaisha Komatsu Seisakusho Thermistance a coefficient de temperature positif
CA2141616A1 (en) * 1992-08-05 1994-02-17 Gregory G. Hlatky Gas phase polymerization of ethylene and c to c olefins
DE69312306T2 (de) * 1992-10-02 1997-11-13 Dow Chemical Co Aufträger homogener komplexkatalysator für olefinpolymerisation
ES2156153T3 (es) * 1993-06-15 2001-06-16 Idemitsu Kosan Co Procedimiento de produccion de polimero olefinico, y catalizador para la polimerizacion de una olefina.
CN1043648C (zh) * 1993-09-17 1999-06-16 陶氏化学公司 烯烃的气相聚合法
CA2138572C (en) * 1993-12-21 1999-08-24 Univation Technologies Llc Production of polyolefins containing long chain branches by a gas phase process
ATE304025T1 (de) * 1994-04-07 2005-09-15 Innovene Europ Ltd Copolymere
BR9509196A (pt) * 1994-09-07 1997-10-21 Dow Chemical Co Polímero de etileno processo para preparar um polímero de etileno produto polímerico composição polímérica e artigo fabricado

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