US4513117A
Expired / Lapsed
US
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Process for conversion of vinyl copolymers to vinylic alcohol copolymers by homogeneous reaction with organometallic compounds
Assignee: Equistar Chemicals LP
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Filing: 1984-05-07
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Granted: 1985-04-23
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Expires: 2004-05-07
Abstract
Abstract A process as disclosed for producing vinylic alcohol copolymers by reacting vinyl ester or carbon monoxide copolymers with organometallic compounds in a homogeneous reaction medium.
Inventors
- 👤 Richard W. Fries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:27
CPC Classifications
C; C08; C08G; C08G67/00; C08G67/02; C08F; C08F8/00; C08F8/12; C08F2810/00; C08F2810/50
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
74 words
A process for producing vinylic alcohol copolymers by reacting an organometallic compound wherein the metal is selected from the group consisting of titanium, magnesium, aluminum, and zinc with a copolymer selected from the group consisting of (a) copolymers of a vinyl ester and a comonomer selected from the group consisting of alpha olefins and styrene and (b) copolymers of carbon monoxide and a comonomer selected from the group consisting of alpha olefins and styrene.
Claim 2
Dependent Claim
74 words
A process for producing vinylic alcohol copolymers by reacting an organometallic compound wherein the metal is selected from the group consisting of titanium, magnesium, aluminum, and zinc with a copolymer selected from the group consisting of (a) copolymers of a vinyl ester and a comonomer selected from the group consisting of alpha olefins and styrene and (b) copolymers of carbon monoxide and a comonomer selected from the group consisting of alpha olefins and styrene.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein the reaction takes place in a homogeneous reaction medium.
Claim 4
Dependent Claim
52 words
The process of claim 2 wherein the organometallic compound is selected from the group consisting of R m MX y where R can be an alkyl group or hydrogen, X is a halogen or hydrogen, M is a metal, m is between 4 and 0, and y is between 0 and 4.
Claim 5
Dependent Claim
32 words
The process of claim 2 wherein the temperature is not higher than the boiling point of the homogeneous reaction medium and the reaction takes place in an essentially anhydrous and oxygen-free atmosphere.
Claim 6
Dependent Claim
18 words
The process of claim 2 wherein the vinyl ester copolymer is a copolymer of ethylene and vinyl acetate.
Claim 7
Dependent Claim
18 words
The process of claim 2 wherein the carbon monoxide copolymer is a copolymer of ethylene and carbon monoxide.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |