Patent EP0120501B1 successfully refreshed from Google Patents.
EP0120501B1
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EP
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Ethylene polymerization using supported vanadium catalyst
Assignee: Union Carbide Corp
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Filing: 1984-03-28
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Granted: 1989-05-31
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Expires: 2004-03-28
Abstract
No abstract record available.
Inventors
- 👤 Debra Lyn Beran
- 👤 Kevin Joseph Cann
- 👤 Robert James Jorgensen
- 👤 Frederick John Karol
- 👤 Norma Jean Maraschin
- 👤 Arthur Ernest Marcinkowsky
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 16:01
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/02; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/642; C08F210/00; C08F210/16
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
213 words
A process for producing polyethylene which comprises polymerizing ethylene with or without at least one C 3 to C 10 alpha-olefin monomer in the gas phase at a temperature between about 10°C to about 115°C, by contacting the monomers with a catalyst composition comprising: (A) a supported precursor consisting essentially of: (1) a vanadium compound which is the reaction product of: (a) a vanadium trihalide of chlorine, bromine or iodine; and (b) an electron donor which is a liquid, organic Lewis base in which said vanadium trihalide is soluble; (2) a modifier having the formula: wherein: M is either boron or AIR (3-a) and wherein each R is independently alkyl, provided that the total number of aliphatic carbon atoms in any one R group may not exceed 14; X is chlorine, bromine or iodine; and a is 0, 1 or 2, with the provision that when M is boron a is 3; and (3) wherein said vanadium compound and said modifier are on a solid, inert carrier which consists essentially of silica or alumina; (B) a cocatalyst having the formula wherein R is as previously defined; and (C) a promoter having the formula: wherein: R' is hydrogen or unsubstituted or halosubstituted lower alkyl; X' is halogen; and b is 0, 1 or 2.
Claim 2
Dependent Claim
213 words
A process for producing polyethylene which comprises polymerizing ethylene with or without at least one C 3 to C 10 alpha-olefin monomer in the gas phase at a temperature between about 10°C to about 115°C, by contacting the monomers with a catalyst composition comprising: (A) a supported precursor consisting essentially of: (1) a vanadium compound which is the reaction product of: (a) a vanadium trihalide of chlorine, bromine or iodine; and (b) an electron donor which is a liquid, organic Lewis base in which said vanadium trihalide is soluble; (2) a modifier having the formula: wherein: M is either boron or AIR (3-a) and wherein each R is independently alkyl, provided that the total number of aliphatic carbon atoms in any one R group may not exceed 14; X is chlorine, bromine or iodine; and a is 0, 1 or 2, with the provision that when M is boron a is 3; and (3) wherein said vanadium compound and said modifier are on a solid, inert carrier which consists essentially of silica or alumina; (B) a cocatalyst having the formula wherein R is as previously defined; and (C) a promoter having the formula: wherein: R' is hydrogen or unsubstituted or halosubstituted lower alkyl; X' is halogen; and b is 0, 1 or 2.
Claim 3
Dependent Claim
39 words
The process of claim 1 wherein the electron donor is selected from the group consisting of alkyl esters of aliphatic and aromatic carboxylic acids, aliphatic esters, aliphatic ketones, aliphatic amines, aliphatic alcohols, alkyl and cycloalkyl ethers, and mixtures thereof.
Claim 4
Dependent Claim
64 words
The process of claim 1, wherein said vanadium trihalide contains chlorine; said electron donor is an alkyl or cycloalkyl ether; said modifier is a C 1 to C 6 alkylaluminum mono- or di- chloride, or boron trichloride; said carrier is silica; said cocatalyst is a C 2 to C 8 trialkylaluminum; and said promoter is a fluoro, chloro or bromo substituted ethane or methane.
Claim 5
Dependent Claim
37 words
The process of claim 1 wherein said vanadium trihalide is vanadium trichloride; said electron donor is tetrahydrofuran; said modifier is diethylaluminum chloride; said carrier is silica; said cocatalyst is triisobutylaluminium or triethylaluminium; and said promoter is chloroform.
Claim 6
Dependent Claim
33 words
The process of any one of claims 1 to 4 wherein polyethylene having a density of greater than about 0.94 g/cc is produced at a temperature of between about 85°C to about 115°C.
Claim 7
Dependent Claim
17 words
The process of claim 5 wherein said polyethylene is an ethylene homopolymer, propylene/ethylene, butene-1/ethylene or hexene-1/ethylene copolymer.
Claim 8
Dependent Claim
36 words
The process of any one of claims 1 to 4 wherein polyethylene having a density of from about 0.91 g/cc to about 0.94 g/cc is produced at a temperature of between about 75°C to about 90°C.
Claim 9
Dependent Claim
33 words
The process of any one of claims 1 to 4 wherein polyethylene having a density of less than about 0.91 g/cc is produced at a temperature of between about 10°C to about 80°C.
Claim 10
Dependent Claim
16 words
The process of claim 7 or 8 wherein said polyethylene is propylene/ethylene, butene-1/ethylene or hexene-1/ethylene copolymer.
Claim 11
Dependent Claim
132 words
A supported catalyst precursor for producing polyethylene consisting essentially of: (1) a vanadium compound which is the reaction product of: (a) a vanadium trihalide of chlorine, bromine or iodine; and (b) an electron donor which is a liquid, organic Lewis base in which said vanadium trihalide is soluble; (2) a modifier having the formula: wherein: M is either boron or AIR(3-a) and wherein each R is independently alkyl, provided that the total number of aliphatic carbon atoms in any one R group may not exceed 14; X is chlorine, bromine or iodine; and a is 0, 1 or 2, with the provision that when M is boron a is 3; and (3) wherein said vanadium compound and said modifier are on a solid, inert carrier which consists essentially of silica or alumina.
Claim 12
Dependent Claim
132 words
A supported catalyst precursor for producing polyethylene consisting essentially of: (1) a vanadium compound which is the reaction product of: (a) a vanadium trihalide of chlorine, bromine or iodine; and (b) an electron donor which is a liquid, organic Lewis base in which said vanadium trihalide is soluble; (2) a modifier having the formula: wherein: M is either boron or AIR(3-a) and wherein each R is independently alkyl, provided that the total number of aliphatic carbon atoms in any one R group may not exceed 14; X is chlorine, bromine or iodine; and a is 0, 1 or 2, with the provision that when M is boron a is 3; and (3) wherein said vanadium compound and said modifier are on a solid, inert carrier which consists essentially of silica or alumina.
Claim 13
Dependent Claim
39 words
The precursor of claim 10 wherein the electron donor is selected from the group consisting of alkyl esters of aliphatic and aromatic carboxylic acids, aliphatic esters, aliphatic ketones, aliphatic amines, aliphatic alcohols, alkyl and cycloalkyl ethers, and mixtures thereof.
Claim 14
Dependent Claim
42 words
The precursor of claim 10 wherein said vanadium trihalide contains chlorine; said electron donor is an alkyl or cycloalkyl ether; said modifier is a C 1 to C 6 alkylaluminum mono- or di- chloride, or boron trichloride; and said carrier is silica.
Claim 15
Dependent Claim
27 words
The precursor of claim 10 wherein said vanadium trihalide is vanadium trichloride; said electron donor is tetrahydrofuran; said modifier is diethylaluminum chloride; and said carrier is silica.
Claim 16
Dependent Claim
53 words
A catalyst composition comprising: (a) the supported precursor of any one of claims 10-13; (b) a cocatalyst having the formula: wherein R is as previously defined; and (c) a promoter having the formula: wherein: R' is hydrogen or unsubstituted or halosubstituted lower alkyl; X' is halogen; and b is 0, 1 or 2.
Claim 17
Dependent Claim
30 words
The catalyst composition of claim 14 wherein said cocatalyst is a C 2 to C 8 trialkylaluminum; and said promoter is a fluoro, chloro or bromo substituted ethane or methane.
Claim 18
Dependent Claim
17 words
The catalyst composition of 14 wherein said cocatalyst is trisobutylaluminum or triethylaluminum; and said promoter is chloroform.
Claim 19
Dependent Claim
17 words
The catalyst composition of 14 wherein said cocatalyst is trisobutylaluminum or triethylaluminum; and said promoter is chloroform.
References Cited (Backward Citations)
No citation records indexed.
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