US4434253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low density closed-cell foamed articles from ethylene copolymer/vinyl or vinylidene halide blends
Assignee: Bata Shoe Co Inc
•
Filing: 1983-02-22
•
Granted: 1984-02-28
•
Expires: 2003-02-22
Abstract
Abstract The subject invention is a foamable composition based on a blend of a carbon monoxide- or sulfur dioxide-containing ethylene copolymer and a vinyl or vinylidene halide polymer, and the closed-cell foamed article produced therefrom.
Inventors
- 👤 John Rys-Sikora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:10
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08L; C08L73/00; C08J2327/00; C08J2327/02; C08J2357/00; C08J2427/00; C08J2457/00; C08L27/00; C08L27/02; C08L27/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
139 words
A closed-cell foamed article comprising a crosslinked blend of (a) 5 to 95 weight percent based on the blend of a copolymer of (i) ethylene; (ii) 1 to 60 weight percent based on copolymer of a softening monomer selected from the group consisting of unsaturated mono- or dicarboxylic acids of 3-20 carbon atoms, esters of said unsaturated mono- or dicarboxylic acids, vinyl esters of saturated carboxylic acids where the acid group has 2-18 carbon atoms, vinyl alkyl ethers wherein the alkyl group has 1-18 carbon atoms, vinyl or vinylidene halides, acrylonitrile, methacrylonitrile, norbornene, alpha olefins of 3-12 carbon atoms and vinyl aromatic compounds; and (iii) 1 to 30 weight percent based on copolymer of a member of the group consisting of carbon monoxide or sulfur dioxide; (b) 5 to 95 weight percent of a vinyl or vinylidene halide polymer.
Claim 2
Dependent Claim
139 words
A closed-cell foamed article comprising a crosslinked blend of (a) 5 to 95 weight percent based on the blend of a copolymer of (i) ethylene; (ii) 1 to 60 weight percent based on copolymer of a softening monomer selected from the group consisting of unsaturated mono- or dicarboxylic acids of 3-20 carbon atoms, esters of said unsaturated mono- or dicarboxylic acids, vinyl esters of saturated carboxylic acids where the acid group has 2-18 carbon atoms, vinyl alkyl ethers wherein the alkyl group has 1-18 carbon atoms, vinyl or vinylidene halides, acrylonitrile, methacrylonitrile, norbornene, alpha olefins of 3-12 carbon atoms and vinyl aromatic compounds; and (iii) 1 to 30 weight percent based on copolymer of a member of the group consisting of carbon monoxide or sulfur dioxide; (b) 5 to 95 weight percent of a vinyl or vinylidene halide polymer.
Claim 3
Dependent Claim
16 words
The article of claim 1 wherein (a) and (b) are compatible as evidenced by optical transparency.
Claim 4
Dependent Claim
10 words
The article of claim 1 wherein (a)(iii) is carbon monoxide.
Claim 5
Dependent Claim
11 words
The article of claim 2 wherein (a) (iii) is carbon monoxide.
Claim 6
Dependent Claim
10 words
The article of claim 1 wherein (a)(iii) is sulfur dioxide.
Claim 7
Dependent Claim
10 words
The article of claim 2 wherein (a)(iii) is sulfur dioxide.
Claim 8
Dependent Claim
25 words
The article of claim 1 wherein (a)(ii) is selected from the group consisting of methyl acrylate, butyl acrylate, vinyl acetate and maleic acid monoethyl ether.
Claim 9
Dependent Claim
25 words
The article of claim 2 wherein (a)(ii) is selected from the group consisting of methyl acrylate, butyl acrylate, vinyl acetate and maleic acid monoethyl ether.
Claim 10
Dependent Claim
25 words
The article of claim 3 wherein (a)(ii) is selected from the group consisting of methyl acrylate, butyl acrylate, vinyl acetate and maleic acid monoethyl ether.
Claim 11
Dependent Claim
25 words
The article of claim 4 wherein (a)(ii) is selected from the group consisting of methyl acrylate, butyl acrylate, vinyl acetate and maleic acid monoethyl ether.
Claim 12
Dependent Claim
25 words
The article of claim 5 wherein (a)(ii) is selected from the group consisting of methyl acrylate, butyl acrylate, vinyl acetate and maleic acid monoethyl ether.
Claim 13
Dependent Claim
25 words
The article of claim 6 wherein (a)(ii) is selected from the group consisting of methyl acrylate, butyl acrylate, vinyl acetate and maleic acid monoethyl ether.
Claim 14
Dependent Claim
26 words
The article of claim 7, 8, 9, 10, 11 or 12 wherein the weight percent of the vinyl or vinylidene halide polymer is at least 50.
Claim 15
Dependent Claim
26 words
The article of claim 7, 8, 9, 10, 11 or 12 wherein the weight percent of the vinyl or vinylidene halide polymer is up to 50.
Claim 16
Dependent Claim
15 words
The article of claim 13 wherein the vinyl or vinylidene halide polymer is polyvinyl chloride.
Claim 17
Dependent Claim
15 words
The article of claim 14 wherein the vinyl or vinylidene halide polymer is polyvinyl chloride.
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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) | 1987-02-27 | 1987-08-29 | 1988-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-27 | 1991-08-29 | 1992-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-27 | 1995-08-29 | 1996-02-28 | $7700.00 | Window Closed / Lapsed |