PL167899B1 - Sposób wytwarzania stalego skladnika katalizatora do polimeryzacji olefin PL PL PL - Google Patents

Sposób wytwarzania stalego skladnika katalizatora do polimeryzacji olefin PL PL PL

Info

Publication number
PL167899B1
PL167899B1 PL90288512A PL28851290A PL167899B1 PL 167899 B1 PL167899 B1 PL 167899B1 PL 90288512 A PL90288512 A PL 90288512A PL 28851290 A PL28851290 A PL 28851290A PL 167899 B1 PL167899 B1 PL 167899B1
Authority
PL
Poland
Prior art keywords
olefin
catalyst component
titanium
polymerization
solid
Prior art date
Application number
PL90288512A
Other languages
English (en)
Polish (pl)
Other versions
PL288512A1 (en
Inventor
Mamoru Kioka
Masao Nakano
Takashi Ueda
Original Assignee
Mitsui Petrochemical Ind
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=18341422&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=PL167899(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mitsui Petrochemical Ind filed Critical Mitsui Petrochemical Ind
Publication of PL288512A1 publication Critical patent/PL288512A1/xx
Publication of PL167899B1 publication Critical patent/PL167899B1/pl

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00Polymerisation catalysts
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
PL90288512A 1989-12-29 1990-12-28 Sposób wytwarzania stalego skladnika katalizatora do polimeryzacji olefin PL PL PL PL167899B1 (pl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1340909A JP2940684B2 (ja) 1989-12-29 1989-12-29 オレフィン重合用固体状触媒成分およびこの触媒成分を用いたオレフィンの重合方法

Publications (2)

Publication Number Publication Date
PL288512A1 PL288512A1 (en) 1991-09-09
PL167899B1 true PL167899B1 (pl) 1995-12-30

Family

ID=18341422

Family Applications (3)

Application Number Title Priority Date Filing Date
PL90288512A PL167899B1 (pl) 1989-12-29 1990-12-28 Sposób wytwarzania stalego skladnika katalizatora do polimeryzacji olefin PL PL PL
PL90300679A PL167913B1 (pl) 1989-12-29 1990-12-28 Sposób wytwarzania katalizatora polimeryzacji olefin PL PL PL
PL90300678A PL167905B1 (pl) 1989-12-29 1990-12-28 Sposób polimeryzacji a-olefin w obecnosci katalizatora PL PL PL

Family Applications After (2)

Application Number Title Priority Date Filing Date
PL90300679A PL167913B1 (pl) 1989-12-29 1990-12-28 Sposób wytwarzania katalizatora polimeryzacji olefin PL PL PL
PL90300678A PL167905B1 (pl) 1989-12-29 1990-12-28 Sposób polimeryzacji a-olefin w obecnosci katalizatora PL PL PL

Country Status (16)

Country Link
US (1) US5153158A (enExample)
EP (1) EP0435332B2 (enExample)
JP (1) JP2940684B2 (enExample)
KR (1) KR940010963B1 (enExample)
CN (2) CN1038685C (enExample)
AT (1) ATE151782T1 (enExample)
CA (1) CA2033404C (enExample)
CZ (1) CZ283582B6 (enExample)
DE (2) DE435332T1 (enExample)
DK (1) DK0435332T3 (enExample)
ES (1) ES2031800T3 (enExample)
GR (2) GR920300075T1 (enExample)
MY (1) MY105326A (enExample)
PL (3) PL167899B1 (enExample)
RU (1) RU2092495C1 (enExample)
TW (1) TW201763B (enExample)

Families Citing this family (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69032347T2 (de) * 1989-12-28 1998-09-24 Idemitsu Petrochemical Co Verfahren zur herstellung eines katalysators zur olefinpolymerisation und von polyolefin
IT1246614B (it) 1991-06-03 1994-11-24 Himont Inc Procedimento per la polimerizzazione in fase gas delle olefine
US6291384B1 (en) 1991-11-06 2001-09-18 Mobil Oil Corporation High activity catalyst prepared with alkoxysilanes
US5470812A (en) * 1991-11-06 1995-11-28 Mobil Oil Corporation High activity polyethylene catalysts prepared with alkoxysilane reagents
US5939348A (en) * 1991-11-06 1999-08-17 Mobil Oil Corporation Catalyst for the manufacture of polythylene with a narrow molecular weight distribution
FR2689133A1 (fr) * 1992-03-27 1993-10-01 Atochem Elf Sa Catalyseur de polymérisation des oléfines, son procédé d'obtention.
US5308818A (en) * 1992-06-08 1994-05-03 Fina Technology, Inc. Catalyst system for the polymerization of olefins
JP3156213B2 (ja) * 1993-02-23 2001-04-16 日石三菱株式会社 ポリオレフィンの製造方法
US5376743A (en) * 1993-03-11 1994-12-27 Union Carbide Chemicals & Plastics Technology Corporation Process for the production of sticky polymers
US5518973A (en) * 1993-10-15 1996-05-21 Exxon Chemical Patents Inc. Titanium trichloride catalyst system for polymerizing olefins
DE69415829T2 (de) * 1993-11-18 1999-05-20 Mobil Oil Corp., Fairfax, Va. Katalysatorzusammensetzung für die copolymerisation von ethylen
US6034189A (en) * 1994-05-19 2000-03-07 Mitsui Petrochemical Industries, Ltd. Solid titanium catalyst component for olefin polymerization, process for preparation of the same, olefin polymerization catalyst and process for olefin polymerization
TW412546B (en) * 1994-05-19 2000-11-21 Mitsui Petrochemical Ind Solid titanium catalyst component for olefin polymerization, process for preparation of the same, olefin polymerization catalyst and process for olefin polymerization
IT1275867B1 (it) * 1995-03-07 1997-10-24 Enichem Elastomers Procedimento per l'ottenimento di copolimeri elastomerici etilene- propilene ad alta purezza e distribuzione dei pesi molecolari
US5849655A (en) * 1996-12-20 1998-12-15 Fina Technology, Inc. Polyolefin catalyst for polymerization of propylene and a method of making and using thereof
US5948720A (en) * 1997-01-07 1999-09-07 Huntsman Polymers Corporation Catalyst for the production of flexible polyolefin compositions, methods for making and using same, and products thereof
US6100351A (en) * 1997-01-07 2000-08-08 Huntsman Polymers Corporation Olefin polymerization process and products thereof
US6930071B2 (en) * 1997-01-28 2005-08-16 Fina Technology, Inc. Ziegler-natta catalyst for polyolefins
US6864207B2 (en) * 1997-01-28 2005-03-08 Fina Technology, Inc. Ziegler-Natta catalyst for polyolefins
US6080818A (en) * 1997-03-24 2000-06-27 Huntsman Polymers Corporation Polyolefin blends used for non-woven applications
EP1418186B1 (en) * 1998-03-23 2011-05-18 Basell Poliolefine Italia S.r.l. Prepolymerized catalyst components for the polymerization of olefins
EP1094083A3 (en) * 1999-10-19 2001-12-12 Idemitsu Petrochemical Co., Ltd. Catalyst for olefin polymerization, method for producing olefin polymer, and olefin polymer
US6358372B1 (en) 2000-07-11 2002-03-19 Union Carbide Chemicals & Plastics Technology Corporation Method of reducing formation of precipitates in solvent recovery system
WO2002096957A1 (en) 2001-05-29 2002-12-05 Union Carbide Chemicals & Plastics Technology Corporation Olefin polymerization catalyst compositions and method of preparation
US6825146B2 (en) * 2001-05-29 2004-11-30 Union Carbide Chemicals & Plastics Technology Corporation Olefin polymerization catalyst compositions and method of preparation
MY136330A (en) * 2001-12-12 2008-09-30 Basell Poliolefine Spa Process for the polymerization of olefins
KR100530795B1 (ko) * 2001-12-26 2005-11-23 삼성토탈 주식회사 에틸렌 중합 및 공중합 방법
CN1169845C (zh) * 2002-02-07 2004-10-06 中国石油化工股份有限公司 用于烯烃聚合的固体催化剂组分和含该催化剂组分的催化剂及其应用
US7141635B2 (en) * 2002-06-14 2006-11-28 Union Carbide Chemicals And Plastics Tech Catalyst composition and polymerization process using mixtures of selectivity control agents
EP1548035A4 (en) * 2002-09-11 2006-08-09 Japan Polypropylene Corp CATALYST FOR THE POLYMERIZATION OF AN α-OLEFIN AND METHOD FOR THE PREPARATION OF α-OLEFIN POLYMER BY USING THE SAME
WO2005012371A2 (en) * 2003-05-12 2005-02-10 Union Carbide Chemicals & Plastics Technology Corporation Process for control of polymer fines in a gas-phase polymerization
CA2527357A1 (en) * 2003-05-29 2004-12-09 Basell Poliolefine Italia S.R.L. Process for the preparation of a catalyst component and components therefrom obtained
WO2005005489A1 (en) * 2003-06-24 2005-01-20 Union Carbide Chemicals & Plastics Technology Corporation Catalyst composition and polymerization process using mixture of silane electron donors
CN1845940A (zh) * 2003-08-29 2006-10-11 陶氏环球技术公司 用于制造部分干燥的易分散的烯烃聚合前催化剂的方法
WO2005030815A1 (en) * 2003-09-23 2005-04-07 Dow Global Technologies Inc. Self limiting catalyst composition and propylene polymerization process
EP1668044B1 (en) 2003-09-23 2014-05-07 W.R. Grace & CO. - CONN. Self limiting catalyst composition with dicarboxylic acid ester internal donor and propylene polymerization process
US7393910B2 (en) 2003-09-23 2008-07-01 Dow Global Technologies Inc. Catalyst composition for ethylene polymerization
RU2349604C2 (ru) * 2003-09-23 2009-03-20 Юнион Карбайд Кемикалз Энд Пластикс Текнолоджи Ллс Самозатухающаяся композиция катализатора, включающая внутренний донор в виде сложного эфира монокарбоновой кислоты, и способ полимеризации пропилена
US20060223956A1 (en) * 2003-09-23 2006-10-05 Linfeng Chen Catalyst composition with mixed sca and propylene polymerization process
US7135531B2 (en) * 2004-01-28 2006-11-14 Basf Catalysts Llc Spherical catalyst for olefin polymerization
RU2006139061A (ru) * 2004-04-07 2008-05-20 Юнион Карбайд Кемикалз энд Пластикс Текнолоджи Корпорейшн (US) Композиции прокатализаторов для полимеризации олефинов и способ получения
JP2008503602A (ja) * 2004-06-16 2008-02-07 ダウ グローバル テクノロジーズ インコーポレイティド チーグラー・ナッタ研究のための装置および方法
CN1968972A (zh) 2004-06-16 2007-05-23 陶氏环球技术公司 确定齐格勒-纳塔助催化剂的方法
JP2008509276A (ja) * 2004-08-09 2008-03-27 ユニオン・カーバイド・ケミカルズ・アンド・プラスティックス・テクノロジー・コーポレイション スプレー乾燥された頑丈なチーグラー・ナッタプロカタリスト、およびこれを用いた重合方法
RU2377256C2 (ru) * 2004-08-09 2009-12-27 Юнион Карбайд Кемикалз Энд Пластикс Текнолоджи Ллс Твердый высушенный распылением прокатализатор циглера-натта и способ полимеризации, в котором он используется
KR100640275B1 (ko) * 2004-10-14 2006-11-01 대한유화공업 주식회사 에틸렌 중합 및/또는 에틸렌 공중합용 고체 촉매의 제조방법
US7776979B2 (en) * 2007-01-26 2010-08-17 Lg Chem, Ltd. Prepolymerized catalyst for olefin polymerization, process for polymerizing olefin by using the catalyst and polyolefin produced by the process
US7817819B1 (en) * 2007-04-03 2010-10-19 Nanostellar, Inc. Characterization of metal particle distributions in a supported catalyst
ATE509967T1 (de) * 2007-06-14 2011-06-15 Borealis Tech Oy Verfahren zur herstellung von propylen- copolymeren mit hilfe eines vorpolymerisierten katalysators
US7981517B2 (en) * 2007-08-28 2011-07-19 Dow Global Technologies Inc. Bituminous compositions and methods of making and using same
US8003741B2 (en) 2008-02-07 2011-08-23 Fina Technology, Inc. Ziegler-Natta catalyst
US8003559B2 (en) * 2008-05-13 2011-08-23 Basf Corporation Internal donor for olefin polymerization catalysts
US7638585B2 (en) 2008-05-13 2009-12-29 Basf Catalysts, Llc Catalyst flow
US8003558B2 (en) * 2008-07-29 2011-08-23 Basf Corporation Internal donor for olefin polymerization catalysts
KR20110047234A (ko) * 2008-08-19 2011-05-06 다우 글로벌 테크놀로지스 엘엘씨 분류된 촉매 조성물, 장치 및 방법
BRPI0919385B1 (pt) 2008-09-26 2019-06-04 Basell Poliolefine Italia S.R.L. Componentecatalisador pré-polimerizado, sistema catalisador e processo em fase gasosa para a polimerização de olefinas
MY162815A (en) * 2008-11-25 2017-07-31 W R Grace & Co -Conn Procatalyst composition multiple internal donor having silyl ester and method
US8088872B2 (en) * 2008-11-25 2012-01-03 Dow Global Technologies Llc Procatalyst composition including silyl ester internal donor and method
US8288585B2 (en) 2008-12-31 2012-10-16 Dow Global Technologies Llc Procatalyst composition with substitute 1,2-phenylene aromatic diester internal donor and method
RU2518065C2 (ru) 2008-12-31 2014-06-10 ДАУ ГЛОБАЛ ТЕКНОЛОДЖИЗ ЭлЭлСи Композиции и изделия из статистического сополимера пропилена и способ их получения
US8247341B2 (en) * 2009-04-17 2012-08-21 Dow Global Technologies Llc Procatalyst composition with silyl glutarate and method
CN101864008B (zh) * 2009-04-17 2011-11-02 中国石油化工股份有限公司 一种用于烯烃聚合反应的催化剂
SG175340A1 (en) * 2009-04-23 2011-11-28 Dow Global Technologies Llc Procatalyst composition with adamantane and method
DK2464675T3 (en) 2009-11-10 2016-12-12 Total Res & Technology Feluy USE OF bimodal POLYETHYLENE FOR INJECTION MOLDING BLOWER DRIVE APPLICATIONS
MY158466A (en) * 2009-12-02 2016-10-14 Grace W R & Co Three and four atom bridged dicarbonate compounds as internal donors in catalysts for polypropylene manufacture
SG181482A1 (en) * 2009-12-02 2012-07-30 Dow Global Technologies Llc Two atom bridged dicarbonate compounds as internal donors in catalysts for polypropylene manufacture
HUE056588T2 (hu) 2010-02-05 2022-02-28 Total Res & Technology Feluy Eljárás poliolefinek elõállítására
MX2013007356A (es) 2010-12-21 2014-01-23 Dow Global Technologies Llc Proceso para producir polimeros basados en propileno con alto indice de fluidez y productos preparados a partir de los mismos.
HUE036002T2 (hu) 2011-03-04 2018-06-28 Total Res & Technology Feluy Eljárás poliolefin keverékek elõállítására a keverékek folyamatos fizikai olvasztására és összekeverésére szolgáló készülékben
US9109105B2 (en) 2011-03-04 2015-08-18 Total Research & Technology Feluy Process for preparing Ziegler-Natta produced polyethylene blends
US9359493B2 (en) 2011-09-30 2016-06-07 Total Research & Technology Feluy High-density polyethylene for caps and closures
EP2607387A1 (en) * 2011-12-23 2013-06-26 Basell Poliolefine Italia S.r.l. Pre-polymerized catalyst components for the polymerization of olefins
EP2607386A1 (en) * 2011-12-23 2013-06-26 Basell Poliolefine Italia S.r.l. Pre-polymerized catalyst components for the polymerization of olefins
KR20160042925A (ko) 2013-08-12 2016-04-20 토탈 리서치 앤드 테크놀로지 펠루이 사출 연신 취입 성형 적용을 위한 폴리에틸렌
WO2016005265A1 (en) 2014-07-10 2016-01-14 Total Research & Technology Feluy Process for producing high density polyethylene composition having high environmental stress crack resistance from post consumer plastic and articles made of said composition
EP3507312A4 (en) 2016-08-30 2020-06-03 W.R. Grace & Co.-Conn. LOW ASH POLYOLEFINS AND PROCESS FOR PRODUCING THE SAME
CN109206547B (zh) * 2017-07-03 2021-02-05 中国石化扬子石油化工有限公司 一种Ziegler-Natta型的丙烯聚合催化剂的外给电子体及包含它的催化剂

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5634709A (en) 1979-08-31 1981-04-07 Mitsui Petrochem Ind Ltd Gas phase polymerization or copolymerization of olefin
JPS6042806B2 (ja) * 1979-12-26 1985-09-25 日石三菱株式会社 共重合体の製造方法
JPS56133303A (en) * 1980-03-22 1981-10-19 Chisso Corp Production of alpha-olefin polymer
US4410671A (en) * 1980-08-12 1983-10-18 Phillips Petroleum Company Catalyst, method of producing the catalyst, and polymerization process employing the catalyst
US4326988A (en) * 1980-08-12 1982-04-27 Phillips Petroleum Company Catalyst, method of producing the catalyst, and polymerization process employing the catalyst
US4325837A (en) * 1980-08-12 1982-04-20 Phillips Petroleum Company Catalyst, method of producing the catalyst, and polymerization process employing the catalyst
JPS5898315A (ja) * 1981-12-07 1983-06-11 Chisso Corp ポリオレフイン共重合体の粉体流動性改良法
DE3366573D1 (en) * 1982-06-24 1986-11-06 Bp Chimie Sa Process for the polymerization and copolymerization of alpha-olefins in a fluidized bed
FR2541683B1 (fr) * 1983-02-28 1986-05-09 Ato Chimie Procede pour la preparation d'un solide hydrocarbone actif utilisable pour polymeriser des olefines, et procede de synthese d'un polymere ou copolymere olefinique faisant appel audit solide hydrocarbone actif comme systeme
CA1284549C (en) 1986-09-26 1991-05-28 Fathi David Hussein Process for the polymerization of propylene
ATE201216T1 (de) 1987-02-02 2001-06-15 Fina Technology Verfahren zur verbesserung der effektivität eines prepolymerisierten katalysators
FR2629461B1 (fr) * 1988-03-31 1993-05-07 Bp Chimie Sa Catalyseur de (co)polymerisation du propylene, supporte sur des particules spheriques de chlorure de magnesium et enrobe par du polypropylene, et procedes de preparation
FR2651234B1 (fr) * 1989-08-29 1993-03-12 Bp Chem Int Ltd Procede de fabrication en phase gazeuse de copolymeres du propylene a l'aide d'un systeme catalytique de haute activite.

Also Published As

Publication number Publication date
MY105326A (en) 1994-09-30
EP0435332A2 (en) 1991-07-03
EP0435332B2 (en) 2005-08-10
DE69030489D1 (de) 1997-05-22
KR940010963B1 (ko) 1994-11-21
CN1038685C (zh) 1998-06-10
ES2031800T3 (es) 1997-09-16
EP0435332A3 (en) 1992-02-26
DK0435332T3 (da) 1997-05-12
PL167905B1 (pl) 1995-12-30
PL167913B1 (pl) 1995-12-30
CZ283582B6 (cs) 1998-05-13
DE69030489T3 (de) 2006-03-16
ATE151782T1 (de) 1997-05-15
TW201763B (enExample) 1993-03-11
US5153158A (en) 1992-10-06
CZ694290A3 (en) 1996-07-17
DE435332T1 (de) 1992-09-03
JP2940684B2 (ja) 1999-08-25
EP0435332B1 (en) 1997-04-16
CN1052870A (zh) 1991-07-10
CA2033404C (en) 1995-09-05
KR910011920A (ko) 1991-08-07
DE69030489T2 (de) 1997-09-04
ES2031800T1 (es) 1993-01-01
JPH03203908A (ja) 1991-09-05
CA2033404A1 (en) 1991-06-30
RU2092495C1 (ru) 1997-10-10
GR3023309T3 (en) 1997-08-29
CN1174204A (zh) 1998-02-25
GR920300075T1 (en) 1992-10-08
PL288512A1 (en) 1991-09-09

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