US4261870A
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Peroxyester-monosaccharide redox catalyst system for vinyl chloride polymerization
Assignee: Vibrantz Corp
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Filing: 1979-12-21
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Granted: 1981-04-14
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Expires: 1999-12-21
Abstract
Abstract A process for the bulk or suspension polymerization of vinyl chloride in the presence of a redox catalyst system consisting of a peroxyester and a monosaccharide or a carboxylic acid ester of a monosaccharide.
Inventors
- 👤 Norman G. Gaylord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:38
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
52 words
A process for the preparation of polymers and copolymers of vinyl chloride, which consists in polymerization in bulk or suspension, in the presence of a redox catalyst system consisting of a peroxyester and a reducing agent selected from the class consisting of a monosaccharide and a carboxylic acid ester of a monosaccharide.
Claim 2
Dependent Claim
52 words
A process for the preparation of polymers and copolymers of vinyl chloride, which consists in polymerization in bulk or suspension, in the presence of a redox catalyst system consisting of a peroxyester and a reducing agent selected from the class consisting of a monosaccharide and a carboxylic acid ester of a monosaccharide.
Claim 3
Dependent Claim
32 words
The process of claim 1 wherein the polymerization is carried out at a temperature where the peroxyester has a half-life of more than 50 hours in the absence of the reducing agent.
Claim 4
Dependent Claim
18 words
The process of claim 2 wherein said polymerization temperature is in the range from -50° to +70° C.
Claim 5
Dependent Claim
15 words
The process of claim 2 wherein said polymerization temperature is between 20° and 60° C.
Claim 6
Dependent Claim
27 words
The process of claim 1 wherein said peroxyester is selected from the class consisting of alkyl peroxyesters of aliphatic carboxylic acids, aromatic carboxylic acids and carbonic acid.
Claim 7
Dependent Claim
18 words
The process of claim 1 wherein said monosaccharide is selected from the class consisting of aldoses and ketoses.
Claim 8
Dependent Claim
10 words
The process of claim 6 wherein said aldose is glucose.
Claim 9
Dependent Claim
10 words
The process of claim 6 wherein said ketose is fructose.
Claim 10
Dependent Claim
20 words
The process of claim 1 wherein said carboxylic acid ester of a monosaccharide is an ester of an aliphatic acid.
Claim 11
Dependent Claim
19 words
The process of claim 9 wherein said carboxylic acid ester of a monosaccharide is an ester of acetic acid.
Claim 12
Dependent Claim
16 words
The process of claim 1 wherein said carboxylic acid ester of a monosaccharide is glucose pentaacetate.
Claim 13
Dependent Claim
11 words
The process of claim 5 wherein said peroxyester is t-butyl peroxyoctoate.
Claim 14
Dependent Claim
50 words
A process for the preparation of polymers and copolymers of vinyl chloride, which consists in polymerization in suspension, in the presence of a redox catalyst system consisting of a peroxyester and a reducing agent selected from the class consisting of a disaccharide and a carboxylic acid ester of a disaccharide.
Claim 15
Dependent Claim
50 words
A process for the preparation of polymers and copolymers of vinyl chloride, which consists in polymerization in suspension, in the presence of a redox catalyst system consisting of a peroxyester and a reducing agent selected from the class consisting of a disaccharide and a carboxylic acid ester of a disaccharide.
Claim 16
Dependent Claim
38 words
A process for the preparation of polymers and copolymers of vinyl chloride, which consists in polymerization in bulk, in the presence of a redox catalyst system consisting of a peroxyester and a carboxylic acid ester of a disaccharide.
Claim 17
Dependent Claim
38 words
A process for the preparation of polymers and copolymers of vinyl chloride, which consists in polymerization in bulk, in the presence of a redox catalyst system consisting of a peroxyester and a carboxylic acid ester of a disaccharide.
Claim 18
Dependent Claim
58 words
A process for the preparation of polymers and copolymers of vinyl chloride, which consists in polymerization in bulk or suspension, in the presence of a redox catalyst system consisting of a peroxyester, a reducing agent selected from the class consisting of a monosaccharide and a carboxylic acid ester of a monosaccharide, and a stannous or antimony (III) carboxylate.
Claim 19
Dependent Claim
58 words
A process for the preparation of polymers and copolymers of vinyl chloride, which consists in polymerization in bulk or suspension, in the presence of a redox catalyst system consisting of a peroxyester, a reducing agent selected from the class consisting of a monosaccharide and a carboxylic acid ester of a monosaccharide, and a stannous or antimony (III) carboxylate.
Claim 20
Dependent Claim
21 words
The process of claim 15 wherein said stannous carboxylate is selected from the class consisting of stannous laurate and stannous octoate.
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) | 1984-04-13 | 1984-10-13 | 1985-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-13 | 1988-10-13 | 1989-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-13 | 1992-10-13 | 1993-04-14 | $7700.00 | Window Closed / Lapsed |