US4198330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane latices modified by a vinyl polymer
Assignee: Wyeth Holdings LLC
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Filing: 1975-11-12
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Granted: 1980-04-15
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Expires: 1995-11-12
Abstract
Abstract A composition of matter is provided comprising a polyurethane latex and a polymer of at least one vinyl monomer, said polymer having been obtained by free radical polymerization of said monomer in the presence of the latex and being characterized as a hard, resinous material at temperatures below about 60° C.
Inventors
- 👤 Samuel Kaizerman
- 👤 Romeo R. Aloia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:26
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/006; C08L; C08L75/00; C08L75/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
52 words
A composition of matter comprising a polyurethane latex and a polymer of at least one vinyl monomer, said composition prepared by free radical polymerization of said monomer in the presence of said latex, said monomer being characterized as capable of providing polymers having a glass transition temperature greater than about 60° C.
Claim 2
Dependent Claim
52 words
A composition of matter comprising a polyurethane latex and a polymer of at least one vinyl monomer, said composition prepared by free radical polymerization of said monomer in the presence of said latex, said monomer being characterized as capable of providing polymers having a glass transition temperature greater than about 60° C.
Claim 3
Dependent Claim
17 words
A composition according to claim 1 wherein the polyurethane latex is prepared from an isocyanate terminated prepolymer.
Claim 4
Dependent Claim
23 words
A composition according to claim 2 wherein the isocyanate terminated prepolymer has been prepared by reacting a polymeric diol with an organic diisocyanate.
Claim 5
Dependent Claim
13 words
A composition according to claim 3 wherein the polymeric diol is a polyester.
Claim 6
Dependent Claim
13 words
A composition according to claim 3 wherein the polymeric diol is a polyether.
Claim 7
Dependent Claim
13 words
A composition according to claim 5 wherein the polyether is polypropylene ether glycol.
Claim 8
Dependent Claim
13 words
A composition according to claim 3 wherein the polymeric diol is a polyformal.
Claim 9
Dependent Claim
36 words
A composition according to claim 1 wherein the polyurethane latex is prepared from an isocyanate terminated prepolymer prepared by reacting a polymeric diol, together with a minor amount of a polymeric triol with an organic diisocyanate.
Claim 10
Dependent Claim
31 words
A composition according to claim 8 wherein the isocyanate terminated prepolymer is prepared by reacting a polymeric diol, together with a minor amount of a polymeric tetrol with an organic diisocyanate.
Claim 11
Dependent Claim
12 words
A composition according to claim 1 wherein the vinyl monomer is styrene.
Claim 12
Dependent Claim
13 words
A composition according to claim 1 wherein the vinly monomer is methyl methacrylate.
Claim 13
Dependent Claim
17 words
A composition according to claim 1 wherein the vinyl monomer consists of two or more vinyl monomers.
Claim 14
Dependent Claim
18 words
A composition according to claim 1 wherein the vinyl monomer consists of a mixture of styrene and acrylonitrile.
Claim 15
Dependent Claim
19 words
A composition according to claim 1 wherein the vinyl monomer consists of a mixture of methyl methacrylate and acrylonitrile.
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) | 1983-04-15 | 1983-10-15 | 1984-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-15 | 1987-10-15 | 1988-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-15 | 1991-10-15 | 1992-04-15 | $7700.00 | Window Closed / Lapsed |