US3846509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylonitrile-acrylate copolymers reinforced with grafted butadiene rubber
Assignee: Wyeth Holdings LLC
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Filing: 1971-10-27
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Granted: 1974-11-05
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Expires: 1991-10-27
Abstract
Abstract Compositions of matter comprising from about 5 to about 30 percent, by weight, of polybutadiene grafted with acrylonitrile and an alkyl acrylate, said alkyl group having from 2-4 carbon atoms, inclusive, and from about 70 to about 95 percent, by weight, of a copolymer of acrylonitrile and a lower alkyl acrylate or methacrylate, said alkyl group having from 1-3 carbon atoms, inclusive, the number of carbon atoms in the alkyl group of the grafted acrylate being more than the number of carbon atoms in the alkyl group of the copolymerized acrylate or methacrylate and a process for the production thereof, are disclosed.
Inventors
- 👤 G Saluti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:51
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/18; C08L33/20; Y; Y10; Y10S; Y10S525/00; Y10S525/932; Y10S525/933
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
14 words
A composition according to claim 1 wherein the grafted alkyl acrylate is ethyl acrylate.
Claim 2
Dependent Claim
110 words
20-80 percent by weight of an acrylic ester, the alkyl group thereof having from 2 to 4 carbon atoms inclusive and from about 70 to about 95 percent by weight of II. A copolymer of A. from about 60 to about 80 percent by weight of acrylonitrile and B. from about 20 to about 40 percent by weight of an alkyl acrylate or methacrylate, the alkyl group having from 1 to 3 carbon atoms inclusive, the number of carbon atoms in the alkyl group of the grafted acrylate of I being more than the number of carbon atoms in the alkyl group of the copolymerized acrylate or methacrylate of II.
Claim 3
Dependent Claim
14 words
A composition according to claim 1 wherein the grafted alkyl acrylate is n-butyl acrylate.
Claim 4
Dependent Claim
15 words
A composition according to claim 1 wherein said copolymerized lower alkyl acrylate is methyl acrylate.
Claim 5
Dependent Claim
15 words
A composition according to claim 1 wherein said copolymerized lower alkyl methacrylate is methyl methacrylate.
Claim 6
Dependent Claim
15 words
A composition according to claim 2 wherein said copolymerized lower alkyl acrylate is methyl acrylate.
Claim 7
Dependent Claim
15 words
A composition according to claim 2 wherein said copolymerized lower alkyl methacrylate is methyl methacrylatE.
Claim 8
Dependent Claim
15 words
A composition according to claim 3 wherein said copolymerized lower alkyl acrylate is methyl acrylate.
Claim 9
Dependent Claim
15 words
A composition according to claim 3 wherein said copolymerized lower alkyl methacrylate is methyl methacrylate.
Claim 10
Dependent Claim
54 words
A composition comprising from about 5 to about 30 percent by weight of I. A graft copolymer, A. the trunk of the graft copolymer 33-75 parts by weight of a polymer consisting of a homopolymer of 1,3-butadiene B. the monomer mixture grafted onto the trunk polymer consisting essentially of, 25-67 parts by weight of
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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |