KR910016782A - 올레핀 중합에 사용된 촉매 및 예비 중합체 및 그로부터 수득가능한 에틸렌의 (공) 중합체 - Google Patents

올레핀 중합에 사용된 촉매 및 예비 중합체 및 그로부터 수득가능한 에틸렌의 (공) 중합체 Download PDF

Info

Publication number
KR910016782A
KR910016782A KR1019910003943A KR910003943A KR910016782A KR 910016782 A KR910016782 A KR 910016782A KR 1019910003943 A KR1019910003943 A KR 1019910003943A KR 910003943 A KR910003943 A KR 910003943A KR 910016782 A KR910016782 A KR 910016782A
Authority
KR
South Korea
Prior art keywords
amount
ethylene
compound
solid catalyst
support
Prior art date
Application number
KR1019910003943A
Other languages
English (en)
Inventor
앙드레 벨리 쟝-끌로드
쟉끌린 샤브랑 크리스틴
Original Assignee
케이트 와아윅 덴바이
비피케미칼스 리미티드
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
Application filed by 케이트 와아윅 덴바이, 비피케미칼스 리미티드 filed Critical 케이트 와아윅 덴바이
Publication of KR910016782A publication Critical patent/KR910016782A/ko

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/72—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from metals not provided for in group C08F4/44
    • C08F4/74—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from metals not provided for in group C08F4/44 selected from refractory metals
    • C08F4/76—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from metals not provided for in group C08F4/44 selected from refractory metals selected from titanium, zirconium, hafnium, vanadium, niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/65904—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with another component of C08F4/64
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/65912—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an organoaluminium compound
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/65916—Component covered by group C08F4/64 containing a transition metal-carbon bond supported on a carrier, e.g. silica, MgCl2, polymer
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/6592—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
    • C08F4/65922—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not

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)
  • Polymerization Catalysts (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Graft Or Block Polymers (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

내용 없음

Description

올레핀 중합에 사용된 촉매 및 예비 중합체 및 그로부터 수득가능한 에틸렌의 (공)중합체
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따라 제조된 촉매를 사용하여 수득된 폴리에틸렌의 분자량 분포곡선을 나타낸다.

Claims (8)

  1. 지르코늄 메탈로센을 염화 마그네슘 지지체와 접촉시켜서 제조되는, 하나 또는 그 이상의 올레핀을 중합하는 불균질 방법에 적합한 고체 촉매에 있어서 : (i) 이염화 마그네슘 80~99.5몰% 및 불안정한 수소가 없는 적어도 하나의 유기 전자공여체 화합물 D1 0.5~20몰%를 함유하는, 10~100미크론의 질량평균 직경 Dm 및 입자의 수평균 직경 Dn에 대한 Dm의 비가 3이하인 입자크기 분포를 갖는 구형입자 형태의 고체 지지체 (A)를 불안정한 수소를 함유하는 적어도 하나의 전자공여체 화합물 D2와 접촉시켜서 지지체(A')를 형성하는 제1단계, 및 (ii) 지지체(A')를 지르코늄 메탈로센(B), 및 티타늄 및 바나듐에서 선택된 전이금속(TM)의 적어도 하나의 할라이드 (C)와 접촉시키고 임의로 유기 알루미늄 화합물 (E), 바람직하게는 알루민옥산과 접촉시키는 제2단계로 구성되는 방법에 의해 수득될 수 있음을 특징으로 하는 고체 촉매.
  2. 제1항에 있어서, 불안정한 수소가 없는 유기 전자공여체 화합물 D1이 에테르, 에스테르, 티오에테르, 술폰, 술폭시드, 2차 아미드, 3차 아민, 3차 포스핀 및 포스포르아미드에서 선택됨을 특징으로하는 고체 촉매.
  3. 제1항에 있어서, 불안정한 수소를 함유하는 전자공여체 화합물 D2가 알코올, 페놀, 1차 아미드, 1차 또는 2차 아미, 1차 또는 2차 포스핀, 및 카르복실산에서 선택됨을 특징으로 하는 고체 촉매.
  4. (i) 제1단계에서 화합물 D2를 지지체 마그네슘 양에 대한 D2양의 몰비가 0.05~2.5인 양으로 사용하고 (ii) 제2단계에서 사용된 화합물양은, 지지체의 Mg양에 대한 지르코늄 메탈로센 (B)의 Zr양의 원자비가 0.001~1이고, 지지체의 Mg양에 대한 할라이드 (C)의 Ti및/또는 V양의 원자비가 0.01~10이며, 지르코늄 메탈라센 (B)의 Zr양에 대한 화합물 (E)Al양의 원자비가 0~1,000, 바람직하게는 1~500이 되는 양임을 특징으로 하는, 제1항에 따른 고체 촉매의 제조방법.
  5. (i) 폴리에틸렌, 또는 에틸렌과 10중량%이하의 적어도 하나의 C3~C8α-올레핀과의 공중합체 및 (ii) 마그네슘, 염소, 알루미늄, 지르코늄, 티타늄 및/또는 바나늄의 원자들을 주로 함유하며, 조촉매로서의 유기 알루미늄 화합물 및 제1항에 따른 고체 촉매를 함유하는, 올레핀(공)중합용 활성 촉매를, 예비 중합체가 Zr 및 전이금속(TM) 밀리몰당 0.1~500g의 폴리에틸렌 또는 에틸렌의 공중합체를 함유하며 Al(Zr+TM) 원자비가 10~1,000인 양으로 함유함을 특징으로 하는 예비 중합체 입자.
  6. 제5항에 있어서, 10~500미크론의 질량평균 직경 Dm 및 입자의 수평균 직경 Dn에 대한 Dm의 비가 3이하인 입자크기 분포를 갖는 구형 입자로 구성됨을 특징으로 하는 예비 중합체 입자.
  7. 제1항에 따른 고체 촉매를 액체 탄화수소 중의 또는 기체상 중의 에틸렌 또는 에틸렌과 적어도 하나의 C3~C8α-올레핀의 혼합물과 Al(Zr+TM) 원자비가 10~1,000인 양의 유기알루미늄 화합물 존재하에 0~100℃온도에서 0.1~5MPa의 총 압력하에 접촉시킴을 특징으로 하는, 제5항에 따른 예비 중합체 입자의 제조방법.
  8. 제1항에 따른 고체 촉매 또는 제5항에 따른 예비 중합체 입자를 에틸렌 또는 에틸렌과 적어도 하나의 C3~C8α-올레핀의 혼합물과 Al(Zr+TM) 원자비가 10~1,000인 양의 유기알루미늄 화합물 존재하에 10~110℃온도에서 0.1~5MPa의 총 압력하에 접촉시킴을 특징으로 하는, 에틸렌의 중합 또는 에틸렌과 적어도 하나의 C3~C8α-올레핀의 공중합 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019910003943A 1990-03-12 1991-03-12 올레핀 중합에 사용된 촉매 및 예비 중합체 및 그로부터 수득가능한 에틸렌의 (공) 중합체 KR910016782A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9003368 1990-03-12
FR9003368A FR2659337B1 (fr) 1990-03-12 1990-03-12 Procede de preparation d'un catalyseur a base de zirconium, de titane et/ou de vanadium supporte sur du chlorure de magnesium, et utilisation du catalyseur dans la polymerisation des olefines.

Publications (1)

Publication Number Publication Date
KR910016782A true KR910016782A (ko) 1991-11-05

Family

ID=9394799

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910003943A KR910016782A (ko) 1990-03-12 1991-03-12 올레핀 중합에 사용된 촉매 및 예비 중합체 및 그로부터 수득가능한 에틸렌의 (공) 중합체

Country Status (17)

Country Link
EP (1) EP0447070B1 (ko)
JP (1) JPH04220406A (ko)
KR (1) KR910016782A (ko)
CN (1) CN1054776A (ko)
AT (1) ATE121758T1 (ko)
AU (1) AU640452B2 (ko)
CA (1) CA2036767A1 (ko)
CS (1) CS63391A2 (ko)
DE (1) DE69109161T2 (ko)
ES (1) ES2071211T3 (ko)
FI (1) FI911215A (ko)
FR (1) FR2659337B1 (ko)
HU (1) HUT60296A (ko)
NO (1) NO177389C (ko)
PL (1) PL289376A1 (ko)
PT (1) PT97007B (ko)
ZA (1) ZA911294B (ko)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2659336B1 (fr) * 1990-03-12 1993-05-07 Bp Chemicals Snc Catalyseur a base de zirconium, de titane et/ou de vanadium, supporte sur un chlorure de magnesium, procede de preparation et utilisation du catalyseur dans la polymerisation des olefines.
EP0578838A1 (en) * 1992-04-29 1994-01-19 Hoechst Aktiengesellschaft Olefin polymerization catalyst, process for its preparation, and its use
AU2486292A (en) * 1992-05-28 1994-03-15 Idemitsu Petrochemical Co., Ltd. Process for producing polyolefin
TW298593B (ko) * 1993-02-12 1997-02-21 Hoechst Ag
EP0724604B2 (en) * 1993-10-21 2005-12-14 Exxonmobil Oil Corporation Polyolefin blends of bimodal molecular weight distribution
IT1269931B (it) * 1994-03-29 1997-04-16 Spherilene Srl Componenti e catalizzatori per la polimerizzazione di olefine
ATE194993T1 (de) * 1994-04-07 2000-08-15 Bp Chem Int Ltd Polymerisationsverfahren
IT1270070B (it) * 1994-07-08 1997-04-28 Spherilene Srl Componenti e catalizzatori per la polimerizzazione di olefine
US5622906A (en) * 1994-09-16 1997-04-22 Phillips Petroleum Company Compositions useful for olefin polymerization and processes therefor and therewith
US5529965A (en) * 1994-10-28 1996-06-25 Exxon Chemical Patents Inc. Polymerization catalyst systems, their production and use
US5714424A (en) * 1995-01-09 1998-02-03 W. R. Grace & Co.-Conn. Multi-component polyolefin catalysts
US5882750A (en) * 1995-07-03 1999-03-16 Mobil Oil Corporation Single reactor bimodal HMW-HDPE film resin with improved bubble stability
FR2738829B1 (fr) 1995-09-19 1997-10-17 Atochem Elf Sa Prepolymere pour la polymerisation des olefines, associant plusieurs composantes catalytiques solides
ES2129323B1 (es) 1996-04-18 2000-09-16 Repsol Quimica Sa Procedimiento para la obtencion de un sistema catalitico para la polimerizacion de alpha-olefinas en suspension en fase gas a bajas y altas temperaturas o en masa a altas presiones y altas o bajas temperaturas
WO1997042237A1 (en) * 1996-05-03 1997-11-13 Dsm N.V. A process for making polyolefins having broad molecular weight distributions
US6136747A (en) * 1998-06-19 2000-10-24 Union Carbide Chemicals & Plastics Technology Corporation Mixed catalyst composition for the production of olefin polymers
CN1096474C (zh) * 1998-12-30 2002-12-18 化学工业部北京化工研究院 用于合成宽分布乙烯聚合物的复合催化剂及其制法和应用
US6265037B1 (en) 1999-04-16 2001-07-24 Andersen Corporation Polyolefin wood fiber composite
DE19962129A1 (de) 1999-12-21 2001-06-28 Targor Gmbh Verfahren zur Herstellung eines Katalysatorfeststoffs zur Olefinpolymerisation
EP1265933B1 (en) * 2000-12-22 2008-08-13 Basell Polyolefine GmbH Catalyst components for the polymerization of olefins
CA2874344C (en) 2014-12-15 2021-08-31 Nova Chemicals Corporation Spheroidal catalyst for olefin polymerization
CA2890606C (en) 2015-05-07 2022-07-19 Nova Chemicals Corporation Process for polymerization using dense and spherical ziegler-natta type catalyst

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1268754A (en) * 1985-06-21 1990-05-08 Howard Curtis Welborn, Jr. Supported polymerization catalyst
US4659685A (en) * 1986-03-17 1987-04-21 The Dow Chemical Company Heterogeneous organometallic catalysts containing a supported titanium compound and at least one other supported organometallic compound
IT1221654B (it) * 1987-11-27 1990-07-12 Ausimont Spa Catalizzatori per la polimerizzazione delle olefine
FR2656314B1 (fr) * 1989-12-22 1992-04-17 Bp Chemicals Snc Catalyseur a base de zirconium supporte sur du chlorure de magnesium, procede de preparation et utilisation du catalyseur dans la polymerisation des olefines.
FR2656315B1 (fr) * 1989-12-22 1992-04-17 Bp Chemicals Snc Procede de preparation d'un catalyseur a base de zirconium supporte sur du chlorure de magnesium, et utilisation du catalyseur dans la polymerisation des olefines.
FR2659336B1 (fr) * 1990-03-12 1993-05-07 Bp Chemicals Snc Catalyseur a base de zirconium, de titane et/ou de vanadium, supporte sur un chlorure de magnesium, procede de preparation et utilisation du catalyseur dans la polymerisation des olefines.

Also Published As

Publication number Publication date
NO177389C (no) 1995-09-06
AU7134591A (en) 1991-09-12
ZA911294B (en) 1992-10-28
FR2659337A1 (fr) 1991-09-13
NO177389B (no) 1995-05-29
PL289376A1 (en) 1992-03-09
JPH04220406A (ja) 1992-08-11
CN1054776A (zh) 1991-09-25
ATE121758T1 (de) 1995-05-15
NO910954D0 (no) 1991-03-11
DE69109161T2 (de) 1995-08-31
CS63391A2 (en) 1991-10-15
FI911215A0 (fi) 1991-03-12
CA2036767A1 (en) 1991-09-13
EP0447070B1 (en) 1995-04-26
DE69109161D1 (de) 1995-06-01
PT97007B (pt) 1998-07-31
HU910791D0 (en) 1991-09-30
FI911215A (fi) 1991-09-13
EP0447070A1 (en) 1991-09-18
ES2071211T3 (es) 1995-06-16
HUT60296A (en) 1992-08-28
FR2659337B1 (fr) 1992-06-05
AU640452B2 (en) 1993-08-26
PT97007A (pt) 1991-10-31
NO910954L (no) 1991-09-13

Similar Documents

Publication Publication Date Title
KR910016782A (ko) 올레핀 중합에 사용된 촉매 및 예비 중합체 및 그로부터 수득가능한 에틸렌의 (공) 중합체
JP3553069B2 (ja) 広い分子量分布を有するポリエチレンを製造するための方法
US6303698B1 (en) Propylene copolymer and process for the production thereof
KR910011913A (ko) 폴리올레핀 제조용 촉매 및 예비 중합체
EP0515132B1 (en) Olefin polymerization catalyst and olefin polymerization
CA2107634C (en) Titanium catalyst component for ethylene polymerization, ethylene polymerization catalyst, and process for ethylene polymerization using the same
US5478898A (en) Process for the polymerization of olefins and block (co)polymers derived from at least one olefin
KR910011921A (ko) 폴리올레핀 제조용 촉매 및 예비중합체
KR0132760B1 (ko) 시클로올레핀 공중합체 조성물
JP2010513651A (ja) オレフィンを重合するためのポリマー担持型メタロセン触媒組成物
NO175062B (no) Fremgangsmåte for fremstilling av vanadium/titan-basert katalysator for polymerisering av olefiner samt fremgangsmåte for (ko-)polymerisering av olefiner
KR910004675A (ko) 프로필렌탄성 공중합체의 기체상 제조방법
KR910016776A (ko) 올레핀 중합에 사용되는 촉매및 예비 중합체, 및 그로 부터 수득 가능한 에틸렌(공)중합체
PL152519B1 (en) Catalytic solid to be used in stereospecific polymerization of alpha-olefins, process for its preparation and process for polymerizing alpha-olefins in its presence
JPH04500832A (ja) 弾性プロピレン共重合体及びこれらをガス相で製造する方法
JP3034219B2 (ja) 触媒成分と、そのオレフィン重合での利用
JP3160067B2 (ja) オレフィン重合用触媒およびオレフィンの重合方法
KR890014589A (ko) 지글러-나타형 촉매
JP3570809B2 (ja) ポリエチレンの製造方法
AU650814B2 (en) Vanadium-containing copolymer
JP3110155B2 (ja) オレフィン重合用触媒およびオレフィンの重合方法
KR920004432A (ko) 에틸렌중합체와 에틸렌중합체의 기체상 제법
KR970706320A (ko) 중합방법(polymerization process)
US5208303A (en) Process for preparing a vanadium-based catalyst suitable for olefin polymerization
NO177720B (no) Fremgangsmåte for fremstilling av en katalysator av Ziegler-Natta-typen og fremgangsmåte for (ko-)polymerisasjon av olefiner

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application