US4097663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low fusion copolymer comprising vinyl chloride, vinyl acetate, and bis(hydrocarbyl)vinylphosphonate
Assignee: Stauffer Chemical Co
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Filing: 1976-01-29
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Granted: 1978-06-27
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Expires: 1996-01-29
Abstract
Abstract An emulsion copolymer resin which contains from about 75% to about 90% by weight vinyl chloride, from about 5% to about 15% vinyl acetate and from about 5% to about 15% of a bis(hydrocarbyl)vinylphosphonate, has a fusion temperature of from about 200 DEG F. to about 300 DEG F. and has utility as a low fusion resin in the formation of cellular polyvinyl chloride products.
Inventors
- 👤 Ruth E. Gallagher
- 👤 Jagadish C. Goswami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:53
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08J9/101; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
93 words
An emulsion copolymer having a fusion temperature of from about 200° F. to about 300° F. formed by emulsion polymerizing: a. from about 75% to about 90%, by weight, vinyl chloride; b. from about 5% to about 15%, by weight, vinyl acetate; and c. from about 5% to about 15% by weight of a bis(hydrocarbyl) vinylphosphonate of the formula ##STR2## where X is selected from the group consisting of hydrogen, halogen, cyano, aryl and C 1 -C 18 alkyl, and R and R' are unsubstituted and substituted C 1 -C 12 alkyl groups.
Claim 2
Dependent Claim
93 words
An emulsion copolymer having a fusion temperature of from about 200° F. to about 300° F. formed by emulsion polymerizing: a. from about 75% to about 90%, by weight, vinyl chloride; b. from about 5% to about 15%, by weight, vinyl acetate; and c. from about 5% to about 15% by weight of a bis(hydrocarbyl) vinylphosphonate of the formula ##STR2## where X is selected from the group consisting of hydrogen, halogen, cyano, aryl and C 1 -C 18 alkyl, and R and R' are unsubstituted and substituted C 1 -C 12 alkyl groups.
Claim 3
Dependent Claim
13 words
A copolymer as claimed in claim 1 wherein X is chlorine or bromine.
Claim 4
Dependent Claim
17 words
A copolymer as claimed in claim 1 wherein R is a C 1 -C 18 alkyl group.
Claim 5
Dependent Claim
13 words
A copolymer as claimed in claim 1 wherein the vinylphosphonate is bis(beta-chloroethyl) vinylphosphonate.
Claim 6
Dependent Claim
48 words
A copolymer as claimed in claim 1 in which the monomers being polymerized are (a) from about 75% to about 90%, by weight, vinyl chloride, (b) from about 5% to about 15%, by weight, vinyl acetate, and (c) from about 5% to about 15%, by weight, bis(beta-chloroethyl) vinylphosphonate.
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) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |