Patent DE645882C successfully refreshed from Google Patents.
Patent US4389334A successfully refreshed from Google Patents.
US4389334A
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Supported catalysts useful for the polymerization of alpha-olefins
Assignee: Standard Oil Co
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Filing: 1980-12-31
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Granted: 1983-06-21
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Expires: 2000-12-31
Abstract
Abstract This invention relates to a supported catalyst and to the use of this catalyst in a process for the polymerization of alpha-olefins. The catalyst comprises a transition metal complex supported on an interpolymer comprising an alpha, beta-unsaturated dicarboxylic acid, anhydride or lower alkyl ester thereof, and one or more monomers copolymerizable therewith which has been treated with a Group IIA halide or alkyl halide. Preferred supports comprise maleic anhydride copolymers which have been treated with a magnesium compound.
Inventors
- 👤 Raymond J. Weinert, Jr.
- 👤 Kenneth C. Benton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:57
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/904
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
48 words
A catalyst comprising a Ziegler-type transition metal complex and a non-rubber support which has been treated with a Group IIA metal halide or Group IIA metal alkyl halide, the support comprising an interpolymer of an alpha, beta-unsaturated dicarboxylic acid, anhydride or ester thereof and a monomer copolymerizable therewith.
Claim 2
Dependent Claim
48 words
A catalyst comprising a Ziegler-type transition metal complex and a non-rubber support which has been treated with a Group IIA metal halide or Group IIA metal alkyl halide, the support comprising an interpolymer of an alpha, beta-unsaturated dicarboxylic acid, anhydride or ester thereof and a monomer copolymerizable therewith.
Claim 3
Dependent Claim
18 words
The composition of claim 1 wherein the alpha, beta-unsaturated dicarboxylic acid, anhydride or ester thereof is maleic anhydride.
Claim 4
Dependent Claim
20 words
The composition of claim 1 wherein the Group IIA metal is selected from the group consisting of beryllium and magnesium.
Claim 5
Dependent Claim
32 words
The composition of claim 1 wherein the Ziegler-type complex comprises a compound of a transition metal from Groups IV to VIII and an organo metallic compound selected from Groups I to III.
Claim 6
Dependent Claim
20 words
The composition of claim 4 wherein the transition metal is titanium and the organo metallic compound is an aluminum compound.
Claim 7
Dependent Claim
15 words
The composition of claim 1 wherein the monomer copolymerizable therewith contains an olefinic cyclic structure.
Claim 8
Dependent Claim
13 words
The composition of claim 6 wherein the olefinic cyclic monomer is a styrene.
Claim 9
Dependent Claim
13 words
The composition of claim 6 wherein the olefinic cyclic monomer is a norbornene.
Claim 10
Dependent Claim
16 words
The composition of claim 1 wherein the interpolymer is treated with a Group IIA metal halide.
Claim 11
Dependent Claim
17 words
The process of claim 1 wherein the interpolymer is treated with an Group IIA metal alkyl halide.
References Cited (Backward Citations)
US4161462A
Cited
US4268418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-20 | 1986-12-20 | 1987-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-20 | 1990-12-20 | 1991-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-20 | 1994-12-20 | 1995-06-21 | $7700.00 | Window Closed / Lapsed |