ES2145357T3 - Polimeros de etileno bimodales producidos en reactores en tandem. - Google Patents

Polimeros de etileno bimodales producidos en reactores en tandem.

Info

Publication number
ES2145357T3
ES2145357T3 ES96113388T ES96113388T ES2145357T3 ES 2145357 T3 ES2145357 T3 ES 2145357T3 ES 96113388 T ES96113388 T ES 96113388T ES 96113388 T ES96113388 T ES 96113388T ES 2145357 T3 ES2145357 T3 ES 2145357T3
Authority
ES
Spain
Prior art keywords
polymer
sub
ethylene
soil
proportion
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES96113388T
Other languages
English (en)
Inventor
Ahmed Hussein Ali
Robert Olds Hagerty
Shihmay Christine Ong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mobil Oil AS
Original Assignee
Mobil Oil AS
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=24668525&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2145357(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mobil Oil AS filed Critical Mobil Oil AS
Application granted granted Critical
Publication of ES2145357T3 publication Critical patent/ES2145357T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • C08F10/00Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F10/02Ethene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/24Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
    • B01J8/26Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations
    • 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
    • C08F297/00Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
    • C08F297/06Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type
    • C08F297/08Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins
    • C08F297/083Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins the monomers being ethylene or propylene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/06Polyethylene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/08Copolymers of ethene
    • C08L23/0807Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms
    • C08L23/0815Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms with aliphatic 1-olefins containing one carbon-to-carbon double bond
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00002Chemical plants
    • B01J2219/00027Process aspects
    • B01J2219/0004Processes in series
    • 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
    • C08F210/00Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/16Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2308/00Chemical blending or stepwise polymerisation process with the same catalyst
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2314/00Polymer mixtures characterised by way of preparation
    • C08L2314/02Ziegler natta catalyst

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Graft Or Block Polymers (AREA)
  • Polymerisation Methods In General (AREA)

Abstract

SE PROPORCIONA UN PROCEDIMIENTO PARA PRODUCIR UNA MEZCLA DE POLIMERO DE ETILENO BIMODAL QUE COMPRENDE LA PUESTA EN CONTACTO EN UNA PRIMERA FASE GASEOSA, ZONA DE REACCION DE LECHO FLUIDIZADO BAJO CONDICIONES POLIMERICAS, UNA COMPOSICION MONOMERICA GASEOSA QUE COMPRENDE UNA PROPORCION MAYOR DE ETILENO Y, OPCIONALMENTE, HIDROGENO, CON UN CATALIZADOR ZIEGLER-NATTA, LA PROPORCION MOLAR DE HIDROGENO/ETILENO (PROPORCION H{SUB,2}/C{SUB,2}) SIENDO NO SUPERIOR A ALREDEDOR DE 0,3 Y LA PRESION PARCIAL DE ETILENO SIENDO NO SUPERIOR A ALREDEDOR DE 100 PSIA, PARA PRODUCIR UN POLIMERO DE PESO MOLECULAR RELATIVAMENTE ALTO (HMW) ASOCIADO A PARTICULAS CATALIZADORAS EN UNA SECUNDA FASE GASEOSA, ZONA DE REACCION DE LECHO FLUIDIZADO EN LA QUE TAMBIEN ES ALIMENTADO HIDROGENO Y UNA COMPOSICION MONOMERICA GASEOSA QUE COMPRENDE UNA PROPORCION MAYOR DE ETILENO, BAJO CONDICIONES DE POLIMERIZACION INCLUYENDO UNA PROPORCION DE H{SUB,2}/C{SUB,2} DE AL MENOS 1,7 VECES QUE EN DICHA PRIMERA ZONA DE REACCION, PARA PRODUCIR UN POLIMERO DE PESO MOLECULAR BAJO (LMW) DEPOSITADO Y DENTRO DE LOS HUECOS DE LAS PARTICULAS DE POLIMERO/CATALIZADOR DE HMW, LA MEZCLA DE POLIMERO BIMODAL RESULTANTE OBTENIDA DE LA SEGUNDA ZONA DE REACCION TENIENDO UNA FRACCION DE POLIMERO DE HMW DE AL MENOS ALREDEDOR DE 0,35.
ES96113388T 1991-03-06 1992-02-24 Polimeros de etileno bimodales producidos en reactores en tandem. Expired - Lifetime ES2145357T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66505491A 1991-03-06 1991-03-06

Publications (1)

Publication Number Publication Date
ES2145357T3 true ES2145357T3 (es) 2000-07-01

Family

ID=24668525

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96113388T Expired - Lifetime ES2145357T3 (es) 1991-03-06 1992-02-24 Polimeros de etileno bimodales producidos en reactores en tandem.

Country Status (6)

Country Link
EP (2) EP0503791B1 (es)
JP (1) JP3335659B2 (es)
AU (1) AU642076B2 (es)
CA (1) CA2062098A1 (es)
DE (2) DE69230919T2 (es)
ES (1) ES2145357T3 (es)

Families Citing this family (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5688865A (en) * 1991-03-06 1997-11-18 Mobil Oil Corporation Process and system for preventing pressure tap fouling in tandem polymerization reactors
EP0533452A1 (en) * 1991-03-21 1993-03-24 Mobil Oil Corporation Production of bimodal ethylene polymers in tandem reactors
EP0528523B1 (en) * 1991-07-24 2001-10-10 Mobil Oil Corporation Improved ethylene polymer film resins
US5847053A (en) * 1991-10-15 1998-12-08 The Dow Chemical Company Ethylene polymer film made from ethylene polymer blends
US5284613A (en) * 1992-09-04 1994-02-08 Mobil Oil Corporation Producing blown film and blends from bimodal high density high molecular weight film resin using magnesium oxide-supported Ziegler catalyst
DE4241530C2 (de) * 1992-12-10 1999-03-25 Buna Sow Leuna Olefinverb Gmbh Verfahren zur Herstellung von Polyethylen hoher Dichte
DE4241533C2 (de) * 1992-12-10 1999-03-25 Buna Sow Leuna Olefinverb Gmbh Verfahren zur Herstellung von Polyethylen hoher Dichte
BE1006439A3 (fr) * 1992-12-21 1994-08-30 Solvay Societe Annonyme Procede de preparation d'une composition de polymeres d'ethylene, composition de polymeres d'ethylene et son utilisation.
US5405901A (en) * 1994-07-06 1995-04-11 Union Carbide Chemicals & Plastics Technology Corporation Process of producing ethylene polymer blends in gas phase
US5503914A (en) * 1994-07-08 1996-04-02 Union Carbide Chemicals & Plastics Technology Corporation Film extruded from an in situ blend of ethylene copolymers
US5514455A (en) * 1994-07-08 1996-05-07 Union Carbide Chemicals & Plastics Technology Corporation Film extruded from an in situ blend of ethylene copolymers
US5548042A (en) * 1994-08-19 1996-08-20 Union Carbide Chemical & Plastics Technology Corporation Process for the production of polypropylene
CA2163465A1 (en) * 1994-11-23 1996-05-24 Arkalgud Venkatapathia Ramamurthy In situ polyethylene blend
US5589539A (en) * 1994-11-23 1996-12-31 Union Carbide Chemicals & Plastics Technology Corporation Process for preparing an in situ polyethylene blend
CN1285624C (zh) * 1994-12-16 2006-11-22 三菱化学株式会社 乙烯聚合物
IT1275573B (it) * 1995-07-20 1997-08-07 Spherilene Spa Processo ed apparecchiatura per la pomimerizzazione in fase gas delle alfa-olefine
US5677375A (en) * 1995-07-21 1997-10-14 Union Carbide Chemicals & Plastics Technology Corporation Process for producing an in situ polyethylene blend
SE9504539D0 (sv) 1995-12-19 1995-12-19 Borealis As Procatalyst and process for the preparation of a multimodal ethylene homopolymer and/or ethylene/ 1-olefin copolymer by gas-phase polymerisation
US5665818A (en) * 1996-03-05 1997-09-09 Union Carbide Chemicals & Plastics Technology Corporation High activity staged reactor process
US5696203A (en) * 1996-07-19 1997-12-09 Montell North America Inc. Process for producing polyolefin grafted copolymers
US6319989B1 (en) 1997-07-21 2001-11-20 The Dow Chemical Company Broad MWD, compositionally uniform ethylene interpolymer compositions, process for making the same and article made therefrom
ZA986434B (en) 1997-07-21 2000-01-20 Dow Chemical Co Broad mwd, compositionally uniform ethylene interpolymer compositions, process for making the same and article made therefrom.
ATE223445T1 (de) * 1997-07-21 2002-09-15 Dow Chemical Co Ethyleninterpolymerzusammensetzungen mit breiter molekulargewichtsverteilung und einheitlicher zusammensetzung, verfahren zu dessen herstellung und daraus hergestellte artikel
BE1011333A3 (fr) * 1997-08-20 1999-07-06 Solvay Procede de fabrication d'une composition de polymeres d'ethylene.
FI980308A0 (fi) 1998-02-10 1998-02-10 Borealis Polymers Oy Polymerfilmer och foerfarande framstaellning daerav
IL138733A0 (en) 1998-04-06 2001-10-31 Borealis Tech Oy High density polyethylene compositions, a process for the production thereof and films prepared thereof
US6184299B1 (en) * 1999-03-31 2001-02-06 Union Carbide Chemicals & Plastics Technology Corporation Staged reactor process
US6187866B1 (en) * 1999-06-04 2001-02-13 Union Carbide Chemicals & Plastics Technology Corporation Staged reactor process
GB9919718D0 (en) 1999-08-19 1999-10-20 Borealis As Process
US6486270B1 (en) * 2000-08-25 2002-11-26 Equistar Chemicals, Lp High molecular weight, medium density polyethylene
US6355733B1 (en) * 2000-10-13 2002-03-12 Equistar Chemicals, Lp Polyethylene blends and films
CA2457430C (en) 2001-08-31 2011-10-18 Dow Global Technologies Inc. Multimodal polyethylene material
EP1764390A1 (en) * 2002-06-04 2007-03-21 Union Carbide Chemicals & Plastics Technology Corporation Polymer compositions and method of making pipes thereof
ATE369396T1 (de) * 2002-06-04 2007-08-15 Union Carbide Chem Plastic Polymerzusammensetzungen und verfahren zum herstellen von rohren daraus
TW200504093A (en) * 2003-05-12 2005-02-01 Dow Global Technologies Inc Polymer composition and process to manufacture high molecular weight-high density polyethylene and film therefrom
BRPI0413229B1 (pt) 2003-08-20 2015-05-05 Basell Poliolefine Srl Processo para preparar um polietileno de larga distribuição de pesos moleculares
WO2005058982A1 (en) 2003-12-19 2005-06-30 Basell Polyolefine Gmbh Process for the (co)polymerization of ethylene
RU2358988C2 (ru) * 2003-12-19 2009-06-20 Базелль Полиолефине Гмбх Способ (со)полимеризации этилена
CN100447168C (zh) * 2004-02-13 2008-12-31 托塔尔石油化学产品研究弗吕公司 催化剂在双峰聚烯烃制备中的运用
DE602005008203D1 (de) * 2005-05-06 2008-08-28 Borealis Tech Oy Polyethylenharz mit enger Korngrössenverteilung
JP5016258B2 (ja) * 2005-05-23 2012-09-05 日本ポリエチレン株式会社 ポリエチレン樹脂・その製造方法並びにその樹脂を用いたパイプおよび継手
EP1780225A1 (en) * 2005-11-01 2007-05-02 Borealis Technology Oy Ziegler-Natta catalyst and its use to prepare multimodal polyolefin
JP2007284660A (ja) * 2006-03-22 2007-11-01 Asahi Kasei Chemicals Corp ポリオレフィンの製造方法
WO2007130553A2 (en) * 2006-05-02 2007-11-15 Dow Global Technologies Inc. High-density polyethylene compositions, method of making the same, wire and cable jackets made therefrom, and method of making such wire and cable jackets
US7592395B2 (en) 2006-08-01 2009-09-22 Exxonmobil Chemical Patents Inc. Multimodal polyethylene for use in single piece beverage bottle caps and closures
BRPI0718752B1 (pt) * 2006-11-15 2018-04-10 Basell Poliolefine Italia S.R.L. Processo multiestágio para a polimerização de olefinas.
EP2052026B2 (en) 2007-05-02 2021-07-14 Dow Global Technologies LLC High-density polyethylene compositions, method of making the same, injection molded articles made therefrom, and method of making such articles
US8138264B2 (en) * 2007-05-04 2012-03-20 Fina Technology, Inc. Bimodal polyethylene resins that have high stiffness and high ESCR
BRPI0816967B1 (pt) * 2007-09-19 2019-01-22 Basell Poliolefine Italia Srl processo multiestágios para polimerização de olefinas e aparelho de polimerização
EP2067799A1 (en) 2007-12-05 2009-06-10 Borealis Technology OY Polymer
EP2130863A1 (en) 2008-06-02 2009-12-09 Borealis AG High density polymer compositions, a method for their preparation and pressure-resistant pipes made therefrom
EP2130862A1 (en) 2008-06-02 2009-12-09 Borealis AG Polymer compositions and pressure-resistant pipes made thereof
EP2130859A1 (en) 2008-06-02 2009-12-09 Borealis AG Polymer compositions having improved homogeneity and odour, a method for making them and pipes made thereof
EP2182524A1 (en) 2008-10-31 2010-05-05 Borealis AG Cable and Polymer composition comprising a multimodal ethylene copolymer
EP2182526A1 (en) 2008-10-31 2010-05-05 Borealis AG Cable and polymer composition comprising an multimodal ethylene copolymer
EP2182525A1 (en) 2008-10-31 2010-05-05 Borealis AG Cable and polymer composition comprising a multimodal ethylene copolymer
EP2417195B1 (en) 2009-04-09 2013-03-20 Borealis AG Thermoplastic polyolefin composition
EP2256159A1 (en) 2009-05-26 2010-12-01 Borealis AG Polymer composition for crosslinked pipes
PL2256158T3 (pl) 2009-05-26 2014-09-30 Borealis Ag Kompozycja polimerowa do usieciowanych wyrobów
WO2011058089A1 (en) 2009-11-13 2011-05-19 Borealis Ag Process for producing a polymerization catalyst
CN102686613B (zh) 2009-11-13 2014-08-13 博瑞立斯有限公司 用于回收过渡金属化合物的方法
EP2322568B1 (en) 2009-11-13 2013-05-15 Borealis AG Process for producing an olefin polymerization catalyst
ES2424958T3 (es) 2009-11-13 2013-10-10 Borealis Ag Proceso para polimerización de olefinas
BR112013025617B1 (pt) 2011-04-19 2020-04-22 Basell Polyolefine Gmbh composição polimérica, processo para sua produção, seu uso e recipiente
US9096752B2 (en) 2011-08-19 2015-08-04 Borealis Ag Heterophasic system with improved surface properties
EP2818509A1 (en) 2013-06-25 2014-12-31 Basell Polyolefine GmbH Polyethylene composition for blow molding having high stress cracking resistance
JP6906517B2 (ja) 2015-12-10 2021-07-21 ダウ グローバル テクノロジーズ エルエルシー 光ファイバーケーブルバッファチューブのための高弾性率オレフィン化合物
EP3749707A1 (en) 2018-02-05 2020-12-16 ExxonMobil Chemical Patents Inc. Enhanced processability of lldpe by addition of ultra-high molecular weight high density polyethylene
AR125871A1 (es) 2021-05-19 2023-08-23 Dow Global Technologies Llc Composiciones de polietileno de alta densidad que tienen mejor procesabilidad y artículos moldeados fabricados a partir de las mismas
BR112023022376A2 (pt) 2021-05-19 2024-01-09 Dow Global Technologies Llc Composição de polietileno, e, artigo moldado
KR20230083820A (ko) 2021-12-03 2023-06-12 에스케이이노베이션 주식회사 폴리올레핀 제조 장치
WO2025017061A1 (en) 2023-07-19 2025-01-23 Basell Poliolefine Italia S.R.L. Multistage process for the polymerization of olefins

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59179508A (ja) * 1983-03-29 1984-10-12 Toa Nenryo Kogyo Kk エチレン共重合体の製造法
JPS59179507A (ja) * 1983-03-29 1984-10-12 Toa Nenryo Kogyo Kk エチレン共重合体の製造方法
US5047468A (en) * 1988-11-16 1991-09-10 Union Carbide Chemicals And Plastics Technology Corporation Process for the in situ blending of polymers
EP0533452A1 (en) * 1991-03-21 1993-03-24 Mobil Oil Corporation Production of bimodal ethylene polymers in tandem reactors

Also Published As

Publication number Publication date
DE69230919D1 (de) 2000-05-18
EP0503791A1 (en) 1992-09-16
JP3335659B2 (ja) 2002-10-21
EP0503791B1 (en) 1997-04-16
AU642076B2 (en) 1993-10-07
EP0778289B1 (en) 2000-04-12
DE69230919T2 (de) 2000-08-17
EP0778289A1 (en) 1997-06-11
AU1125692A (en) 1992-09-10
CA2062098A1 (en) 1992-09-07
DE69218995D1 (de) 1997-05-22
DE69218995T2 (de) 1997-10-16
JPH0586122A (ja) 1993-04-06

Similar Documents

Publication Publication Date Title
ATE263196T1 (de) Herstellung von polyäthylen mit einer breiten molekulargewichtsverteilung
ATE58383T1 (de) Einsatz von antistatika zur vermeidung von belagbildung bei der herstellung von ethylenpolymerisaten in gasphasenreakatoren.
CA1164596A (en) Process for multi-step gas-phase polymerization of olefins
ATE375367T1 (de) Herstellung von polyethylen mit breiter molekulargewichtsverteilung
DE58906248D1 (de) Vermeidung von farbigen Verunreinigungen bei der Herstellung von ultrahochmolekularen Ethylenpolymerisaten mittels eines Titan enthaltenden Katalysatorsystems.
NO307522B1 (no) FremgangsmÕte for fremstilling av bimodale olefinpolymerer og slike polymerprodukter
PL313493A1 (en) Polymerisation of olefins in gaseous phase
NO930910L (no) Fremgangsmaate for gassfasepolymerisering av olefiner
KR930021658A (ko) 올레핀 중합용 촉매, 이의 제조방법 및 용도
DE58906250D1 (de) Vermeidung von farbigen Verunreinigungen bei der Herstellung von ultrahochmolekularen Ethylenpolymerisaten mittels eines Titan enthaltenden Katalysatorsystems.
EP0527221A1 (en) PROCESS FOR THE PREPARATION OF POLYOLEFINS HAVING A BIMODAL DISTRIBUTION OF MOLECULAR WEIGHT.
MY112607A (en) Process for preparing polyethylene
KR940011493A (ko) α-올레핀 중합체의 제조방법
ES8605542A1 (es) Procedimiento para preparar poliolefinas
KR930701491A (ko) 올레핀의 기체상 중합 방법
MX9602864A (es) Proceso para producir una mezcla de polietileno in situ.
ES2163428T3 (es) Procedimiento de produccion de polietileno que tiene una amplia distribucion de peso molecular.
KR900007877A (ko) 과량의 촉매잔류물을 분해하는 바나듐-함유 지글러 촉매시스템을 사용한 에틸렌 중합체의 제법, 및 상기 방법으로 제조된 에틸렌 중합체
KR890701643A (ko) 중합시 동일 반응계에서의 활성 메탈로센-알룸옥산 촉매의 제조방법
EP0232701A3 (en) Use of anti-statics to prevent the formation of deposits during the manufacture of polyethylene of ultra-high molecular weight in a gas-phase reactor
GB0217520D0 (en) Product
ATE40389T1 (de) Verfahren zum herstellen von propylen-ethylenpolymerisaten vom typ der sogenannten ''blockcopolymerisate''.
ATE44036T1 (de) Herstellung koerniger stereoregulaerer 1-butenpolymere in einem fliessbett.
US5322910A (en) Ethylene polymerization
Ali et al. Process for producing bimodal ethylene polymers in tandem reactors

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 778289

Country of ref document: ES