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US4892853A
Expired / Lapsed
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Ethylene polymerization catalyst
Assignee: Union Carbide Chemicals and Plastics Technology LLC
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Filing: 1988-09-30
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Granted: 1990-01-09
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Expires: 2008-09-30
Abstract
Abstract A vanadium catalyst composition comprising: (i) the reaction product of a vanadium compound and an electron donor, which is a liquid, organic Lewis base in which the vanadium compound is soluble; (ii) a hydrocarbyl aluminum cocatalyst; and (iii) a promoter having the following formula: C.sub.3 (X).sub.a (F).sub.b (H).sub.c wherein X is chlorine, bromine, or iodine, and each X can be alike or different a=an integer from 6 to 8 b=an integer from 0 to 2 c=an integer from 0 to 2 a+b+c=8
Inventors
- 👤 Kevin J. Cann
- 👤 Frederick J. Karol
- 👤 Kiu H. Lee
- 👤 Arthur E. Marcinkowsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:31
CPC Classifications
C; C08; C08F; C08F4/00; C08F10/00; C08F10/02
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
119 words
A vanadium catalyst composition comprising: (i) the reaction product of a vanadium compound and an electron donor, which is a liquid, organic Lewis base in which the vanadium compound is soluble; (ii) a hydrocarbyl aluminum cocatalyst; and (iii) a promoter having the following formula; C.sub.3 (X).sub.a (F).sub.b (H).sub.c where X is chlorine, bromine, or iodine, and each X can be alike or different a=an integer from 6 to 8 b=an integer from 0 to 2 c=an integer from 0 to 2 a+b+c=8 and wherein the molar ratio of promoter to vanadium has an upper limit of about 4:1, said composition exhibiting enhanced catalytic activity in the polymerization of ethylene alone or together with one or more other alpha olefins.
Claim 2
Dependent Claim
119 words
A vanadium catalyst composition comprising: (i) the reaction product of a vanadium compound and an electron donor, which is a liquid, organic Lewis base in which the vanadium compound is soluble; (ii) a hydrocarbyl aluminum cocatalyst; and (iii) a promoter having the following formula; C.sub.3 (X).sub.a (F).sub.b (H).sub.c where X is chlorine, bromine, or iodine, and each X can be alike or different a=an integer from 6 to 8 b=an integer from 0 to 2 c=an integer from 0 to 2 a+b+c=8 and wherein the molar ratio of promoter to vanadium has an upper limit of about 4:1, said composition exhibiting enhanced catalytic activity in the polymerization of ethylene alone or together with one or more other alpha olefins.
Claim 3
Dependent Claim
25 words
The vandium catalyst composition of claim 1 wherein the molar ratio of promoter to vanadium is in the range of about 1:1 to about 4:1.
Claim 4
Dependent Claim
40 words
The vanadium catalyst composition of claim 1 wherein the Lewis base is an alkyl ester of an aliphatic or aromatic carboxylic acid, an aliphatic ketone, an aliphatic amine, an aliphatic alcohol, an alkyl or cycloalkyl ether, or a mixture thereof.
Claim 5
Dependent Claim
19 words
The vanadium catalyst composition of claim 1 wherein the vanadium compound is a halide, an oxyhalide, or an acetylacetonate.
Claim 6
Dependent Claim
29 words
The vanadium catalyst composition of claim 1 wherein the vanadium compound is a trihalide, a tetrahalide, or a trioxyhalide, said halide being a chloride, bromide, iodide, or mixtures thereof.
Claim 7
Dependent Claim
14 words
The vanadium catalyst composition of claim 1 wherein the vanadium compound is an acetylacetonate.
Claim 8
Dependent Claim
13 words
The vanadium catalyst composition of claim 1 wherein the cocatalyst is triisobutyl aluminum.
Claim 9
Dependent Claim
12 words
The vanadium catalyst composition of claim 1 wherein the oocatalyst is triethylaluminum.
Claim 10
Dependent Claim
16 words
The vanadium catalyst composition of claim 1 wherein component (i) is impregnated into an anic support.
Claim 11
Dependent Claim
52 words
The vanadium catalyst composition of claim 9 and a modifier of the formula BX 3 or AlR.sub.(3-a) X a wherein each R is an alkyl radical having 1 to 14 carbon atoms and is alike or different; each X is individually chlorine, bromine, or iodine; and a is 0, 1, or 2.
Claim 12
Dependent Claim
14 words
The vanadium catalyst composition of claim 9 wherein the support is a silica support.
Claim 13
Dependent Claim
13 words
The vanadium catalyst composition of claim 2 wherein the cocatalyst is triisobutyl aluminum.
Claim 14
Dependent Claim
12 words
The vanadium catalyst composition of claim 2 wherein the cocatalyst is triethylaluminum.
Claim 15
Dependent Claim
13 words
The vanadium catalyst composition of claim 10 wherein the modifier is diethylaluminum chloride.
Claim 16
Dependent Claim
27 words
The vanadium catalyst composition of claim 10 wherein the modifier is present in an amount of about 0.1 to about 10 moles per mole of electron donor.
Claim 17
Dependent Claim
27 words
The vanadium catalyst composition of claim 15 wherein the modifier is present in an amount of about 0.2 to about 2.5 moles per mole of electron donor.
Claim 18
Dependent Claim
16 words
The vanadium catalyst composition of claim 2 wherein component (i) is impregnated into an inorganic support.
Claim 19
Dependent Claim
14 words
The vanadium catalyst composition of claim 17 wherein the support is a silica support.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-08 | 1993-07-10 | 1994-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-08 | 1997-07-10 | 1998-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-08 | 2001-07-10 | 2002-01-09 | $7700.00 | Window Closed / Lapsed |