FI109705B - Förfarande för polymerisering av en olefin - Google Patents
Förfarande för polymerisering av en olefin Download PDFInfo
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- FI109705B FI109705B FI904506A FI904506A FI109705B FI 109705 B FI109705 B FI 109705B FI 904506 A FI904506 A FI 904506A FI 904506 A FI904506 A FI 904506A FI 109705 B FI109705 B FI 109705B
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- hydrocarbyl
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- C—CHEMISTRY; METALLURGY
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- 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
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- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F17/00—Metallocenes
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- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic System
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/10—Compounds having one or more C—Si linkages containing nitrogen having a Si-N linkage
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- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F10/04—Monomers containing three or four carbon atoms
- C08F10/06—Propene
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- C—CHEMISTRY; METALLURGY
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
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- 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
- C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F110/02—Ethene
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- C—CHEMISTRY; METALLURGY
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F110/04—Monomers containing three or four carbon atoms
- C08F110/06—Propene
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- 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
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/04—Monomers containing three or four carbon atoms
- C08F210/06—Propene
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- 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
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
- C08F210/18—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers with non-conjugated dienes, e.g. EPT rubbers
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- 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
- C08F4/65908—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an ionising compound other than alumoxane, e.g. (C6F5)4B-X+
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- 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
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- 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
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S526/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S526/943—Polymerization with metallocene catalysts
Claims (10)
1. Förfarande för polymerisering av en olefin, känneteck-nat av att etylen och en monomer vald bland C3-C2o-ot-olefi-ner eller C5-C2o_diolefiner polymeriseras i närvaro av ett 20 katalytsystem innefattande (A) en förening med den allmänna formeln: * • « · ; . · S' \ ^ S (Λ y\ m—Q 9 \ / \ V ‘ (JR’z-1-y) ^ :Ms eller * * · • · · /(^5H5-y-xRx) q q. (JR'z_i.y) 9 b/ \ / \|/ \ \ /M\ /B> : (ÄWQ \' \{AI 109705 i vilka: M är Zr, Hf eller Ti; (C5H5.y.xRx) är en cyklopentadienylring som substituerats med 0-5 substituentgrupper R, "x" är 0, l, 2, 3, 4, eller 5 5 vilket avser substitutionsgrad och varje substituentgrupp R är oberoende av varandra en radikal vald i gruppen bestäen-de av Cx - C2 o-hydrokarbyl radikal er, substituerade C1-C2o-hyd-rokarbylradikaler, i vilka en eller flera väteatomer er-satts med en halogenatom, metalloidradikaler substituerade 10 med Ci-C2o-hydrokarbyl, i vilka metalloiden valts i grupp IVA inom det periodiska elementsystemet, och halogenradika-ler; (JR'z-l.y) är en heteroatomligand i vilken J är ett grundämne inom grupp VA i det periodiska elementsystemet, 15 med koordinationstalet 3, eller ett grundämne i grupp VIA i det periodiska elementsystemet med koordinationstalet 2, och varje R' är oberoende av de övriga en radikal vald i gruppen bestäende av C-χ -C2o-hydrokarbyl radikal er, substituerade Ci-C2o_hydrokarbylradikaler i vilka en eller flera vä-20 teatomer ersatts med en halogenatom och "z" är grundäments J koordinationstal; ::: - varje grupp Q eller Q' är oberoende av de övriga en ha- logen, hydrid eller substituerad eller osubstituerad CJ.-C20- j ·*. hydrokarbyl, alkoxid, aryloxid, amid, arylamid, fosfid el- 25 ler arylfosfid, under förutsättning att, dä Q eller Q' är ,···\ en hydrokarbyl, är den annorlunda än gruppen C5H5-y-xRx el- !!! ler Q och Q' tillsammans bildar en alkyliden- eller cyklo- • · ‘ metalliserad hydrokarbylgrupp och M' avser det samma som M; "y" är 0 eller 1 da "w" är större än 0; "y" är 1 dä "w" * · • *3Γ0 är 0; dä "y" är 1, är B en grupp som bildar en kovalent * bindning som innehäller ett grundämne i gruppen IVA eller VA; och • · - L är en neutral Lewis-bas i vilken "w" är ett tai 0-3; '••35 samt (B) alumoxan, . .· med undantag av i) polymerisering av etylen och vinylaromatisk monomer samt 109705 ii) dä föreningen (A) är (N-t-butylamino)(dimetyl)(η5- 2,3,4,5-tetrametylcyklopentadienyl)silanzirkoniumdiklorid, polymerisering av etylen och 1-hexen eller 4-metyl-l-pen-ten. 5
2. Förfarande enligt patentkrav 1, kännetecknat av att po-lymeriseringen sker i vätskefas.
3. Förfarande enligt patentkrav 2, kännetecknat av att 10 etylen inmatas i reaktionszonen under ett tryck mellan -3 1,3-10 och 3445 bar, och vid en reaktionstemperatur mellan -100 °C och 300 °C.
4. Förfarande enligt patentkrav 1, kännetecknat av att a- 15 olefinen är l-buten eller l-okten.
5. Förfarande enligt patentkrav 1 eller 4, kännetecknat av att alumoxanet är metylalumoxan med en genomsnittlig oligo-meriseringsgrad mellan 4-25. 20
6. Förfarande enligt nägot av föregäende patentkrav, kän-netecknat av att Mw/Mn för polymeret som erhalls är 1,5- 3.5,0. 1 · « · * » · 1 · * · .25 7. Förfarande enligt nägot av föregäende patentkrav, kän- * ' I » netecknat av att den viktgenomsnittliga molekylvikten hos , polymeren som erhälls är 1000-5000000.
8. Användning av en förening med de allmänna formeln ; '30 /(C5H5-y-xRx) .,\ Lw Bv ^ y\ M-Q :;:S \ / \ „ 109705 eller /(ΑΗ5-γ-χΚχ) Q Q. .(JR'z-l-y) \ / \l/ \ \4\ /\ (JRz-!.,) Q' VsHs-y-xRx) 5. vilka M är ZR, Hf eller Ti; (C5H5.y.xRx) är en cyklopentadienylring som substituerats med 0-5 substituentgrupper R, "x" är 0, 1, 2, 3, 4, eller 5 vilket avser substitutionsgrad och varje substituentgrupp 10 R är oberoende av varandra en radikal vald i gruppen be- stäende av C1-C2o_hydrokarbylradikaler, substituerade Οχ-C2o~hydrokarbylradikaler, i vilka en eller flera väteatomer ersatts med en halogenatom, metalloidradikaler substituerade med Ci-C2o-hydrokarbyl, i vilka metalloiden valts i grupp 15 IVA inom det periodiska elementsystemet, och halogenradika- ler; - (JR'z.l.y) är en heteroatomligand i vilken J är ett ί *: grundämne inom grupp VA i det periodiska elementsystemet, ; med koordinationstalet 3, eller ett grundämne i grupp VIA i 30 det periodiska elementsystemet med koordinationstalet 2, ‘M» ··, och varje R' är oberoende av de övriga en radikal vald i .,*·, gruppen bestäende av Ci-C2o-hydrokarbylradikaler, substitue rade Ci-C2o_hydrokarbylradikaler i vilka en eller flera vä-,,, teatomer ersatts med en halogenatom och "z" är grundäments i I '25 J koordinationstal; s I ’ ' - varje grupp Q eller Q' är oberoende av de övriga en ha- ;· logen, hydrid eller substituerad eller osubstituerad Cx-C2o- hydrokarbyl, alkoxid, aryloxid, amid, arylamid, fosfid eller arylfosfid, under förutsättning att, dä Q eller Q' är "ίθ en hydrokarbyl, är den annorlunda än gruppen C5H5.y.xRx el ler Q och Q' tillsammans bildar en alkyliden- eller cyklo-metalliserad hydrokarbylgrupp och M' avser det samma som M; 109705 "y" är O eller 1 dä "w" är större än 0; "y" är 1 dä "w" är 0; da "y" är 1, är B en grupp som bildar en kovalent bindning som innehäller ett grundämne i gruppen IVA eller VA; och
5. L är en neutral Lewis-bas i vilken "w" är ett tai 0-3; vid polymerisering av olefiner med etylen och en monomer vald bland C3-C2o-a-olefiner eller C5-C2o-diolefiner, med undantag av 10 i) polymerisering av etylen och vinylaromatisk monomer s amt ii) dä föreningen (A) är (N-t-butylamino)(dimetyl)(η5- 2,3,4,5-tetrametylcyklopentadienyl)silanzirkoniumdiklorid, polymerisering av etylen och 1-hexen eller 4-metyl-l-pen-15 ten.
9. Användning av en förening enligt patentkrav 8 vid polymerisering i vätskefas.
10. Användning av en förening enligt patentkrav 9 vid poly merisering i vätskefas, i vilken etylen inmatas i reaktion-szonen under ett tryck mellan 1,3-10-3 och 3445 bar och vid : en reaktionstemperatur mellan -100 °C och 300 °C. li· * I · »II· I ♦ 1 • t 1 · IM» · · • t · I · i k ·
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US40694589A | 1989-09-13 | 1989-09-13 | |
US40694589 | 1989-09-13 | ||
US53324590 | 1990-06-04 | ||
US07/533,245 US5055438A (en) | 1989-09-13 | 1990-06-04 | Olefin polymerization catalysts |
Publications (2)
Publication Number | Publication Date |
---|---|
FI904506A0 FI904506A0 (fi) | 1990-09-12 |
FI109705B true FI109705B (sv) | 2002-09-30 |
Family
ID=27019705
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI904506A FI109705B (sv) | 1989-09-13 | 1990-09-12 | Förfarande för polymerisering av en olefin |
FI921077A FI113538B (sv) | 1989-09-13 | 1992-03-12 | På monocyklopentadienylövergångsmetaller baserade olefinpolymerisationskatalysatorer |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI921077A FI113538B (sv) | 1989-09-13 | 1992-03-12 | På monocyklopentadienylövergångsmetaller baserade olefinpolymerisationskatalysatorer |
Country Status (21)
Country | Link |
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US (4) | US5055438A (sv) |
EP (5) | EP0662484A3 (sv) |
JP (2) | JP2994746B2 (sv) |
KR (2) | KR100190735B1 (sv) |
AR (1) | AR244355A1 (sv) |
AT (2) | ATE141275T1 (sv) |
AU (1) | AU6248390A (sv) |
BR (2) | BR9004537A (sv) |
CA (2) | CA2024899C (sv) |
DD (1) | DD300233A5 (sv) |
DE (4) | DE662484T1 (sv) |
DK (2) | DK0420436T4 (sv) |
ES (2) | ES2091801T5 (sv) |
FI (2) | FI109705B (sv) |
GR (2) | GR3021539T3 (sv) |
HU (1) | HU214667B (sv) |
IL (1) | IL95549A0 (sv) |
NO (2) | NO178891C (sv) |
NZ (1) | NZ235095A (sv) |
PT (1) | PT95272B (sv) |
WO (1) | WO1991004257A1 (sv) |
Families Citing this family (703)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5621126A (en) * | 1987-01-30 | 1997-04-15 | Exxon Chemical Patents Inc. | Monocyclopentadienyl metal compounds for ethylene-α-olefin-copolymer production catalysts |
US5264405A (en) * | 1989-09-13 | 1993-11-23 | Exxon Chemical Patents Inc. | Monocyclopentadienyl titanium metal compounds for ethylene-α-olefin-copolymer production catalysts |
USRE37788E1 (en) * | 1987-01-30 | 2002-07-09 | Exxon Chemical Patents, Inc. | Monocyclopentadienyl metal compounds for ethylene-α-olefin-copolymer production catalysts |
US5055438A (en) * | 1989-09-13 | 1991-10-08 | Exxon Chemical Patents, Inc. | Olefin polymerization catalysts |
US5830087A (en) * | 1995-06-26 | 1998-11-03 | Lisco, Inc. | Multi-layer golf ball |
GB8914703D0 (en) * | 1989-06-27 | 1989-08-16 | Dow Europ Sa | Bioriented film |
US6025448A (en) | 1989-08-31 | 2000-02-15 | The Dow Chemical Company | Gas phase polymerization of olefins |
US6686488B2 (en) | 1989-08-31 | 2004-02-03 | The Dow Chemical Company | Constrained geometry addition polymerization catalysts |
US5763547A (en) * | 1992-10-02 | 1998-06-09 | The Dow Chemical Company | Supported catalyst complexes for olefin in polymerization |
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 |
US5547675A (en) * | 1989-09-13 | 1996-08-20 | Exxon Chemical Patents Inc. | Modified monocyclopentadienyl transition metal/alumoxane catalyst system for polymerization of olefins |
US5057475A (en) * | 1989-09-13 | 1991-10-15 | Exxon Chemical Patents Inc. | Mono-Cp heteroatom containing group IVB transition metal complexes with MAO: supported catalyst for olefin polymerization |
US5026798A (en) * | 1989-09-13 | 1991-06-25 | Exxon Chemical Patents Inc. | Process for producing crystalline poly-α-olefins with a monocyclopentadienyl transition metal catalyst system |
US6265338B1 (en) * | 1989-09-13 | 2001-07-24 | Exxon Chemical Patents, Inc. | Monocyclopentadienyl titanium metal compounds for ethylene-α-olefin copolymer production catalysts |
US6825369B1 (en) * | 1989-09-14 | 2004-11-30 | The Dow Chemical Company | Metal complex compounds |
US5064802A (en) * | 1989-09-14 | 1991-11-12 | The Dow Chemical Company | Metal complex compounds |
US6294625B1 (en) | 1990-03-20 | 2001-09-25 | Exxonmobil Chemical Patents Inc. | Catalyst system of enhanced productivity and its use in polymerization process |
US6538080B1 (en) | 1990-07-03 | 2003-03-25 | Bp Chemicals Limited | Gas phase polymerization of olefins |
US5272236A (en) * | 1991-10-15 | 1993-12-21 | The Dow Chemical Company | Elastic substantially linear olefin polymers |
JP2545006B2 (ja) * | 1990-07-03 | 1996-10-16 | ザ ダウ ケミカル カンパニー | 付加重合触媒 |
BR9104067A (pt) * | 1990-09-20 | 1992-05-26 | Dow Chemical Co | Composto,processo para preparacao de compostos cataliticos e processo para polimerizacao de um ou mais monomeros |
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