US3947527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerizates of olefinic nitriles and diene rubbers
Assignee: Standard Oil Co
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Filing: 1975-02-21
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Granted: 1976-03-30
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Expires: 1995-02-21
Abstract
Abstract Polymeric compositions having good impact resistance, low permeability to gases, and high-softening temperatures which are composed of a conjugated diene monomer, such as butadiene, an olefinically unsaturated nitrile, such as acrylonitrile, and indene are described.
Inventors
- 👤 George S. Li
- 👤 Gerald P. Coffey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:32
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C08K; C08K5/00; C08K5/01; C08K5/04; C08K5/15; C08K5/16; Y; Y10; Y10S; Y10S525/00; Y10S525/915; Y10S525/933
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
127 words
The polymeric composition resulting from the copolymerization of 100 parts by weight of A. about 50 to 90% by weight of at least one nitrile having the structure ##EQU4## wherein R is hydrogen, a lower alkyl group having from 1 to 4 carbon atoms or a halogen, and B. from 10 to 50% by weight of at least one member selected from the group consisting of indene and coumarone in the presence of from 1 to 40 parts by weight of C. a rubbery polymer of at least 50% by weight of a conjugated diene monomer selected from the group consisting of butadiene and isoprene and up to 50% by weight of at least one member selected from the group consisting of styrene, acrylonitrile, and ethyl acrylate.
Claim 2
Dependent Claim
127 words
The polymeric composition resulting from the copolymerization of 100 parts by weight of A. about 50 to 90% by weight of at least one nitrile having the structure ##EQU4## wherein R is hydrogen, a lower alkyl group having from 1 to 4 carbon atoms or a halogen, and B. from 10 to 50% by weight of at least one member selected from the group consisting of indene and coumarone in the presence of from 1 to 40 parts by weight of C. a rubbery polymer of at least 50% by weight of a conjugated diene monomer selected from the group consisting of butadiene and isoprene and up to 50% by weight of at least one member selected from the group consisting of styrene, acrylonitrile, and ethyl acrylate.
Claim 3
Dependent Claim
9 words
The composition of claim 1 wherein (A) is acrylonitrile.
Claim 4
Dependent Claim
9 words
The composition of claim 2 wherein (B) is indene.
Claim 5
Dependent Claim
11 words
The composition of claim 3 wherein (C) is a butadiene-acrylonitrile copolymer.
Claim 6
Dependent Claim
27 words
The composition of claim 4 wherein there are 60 to 90% by weight of (A) and 10 to 40% by weight of (B) employed in the copolymerization.
Claim 7
Dependent Claim
179 words
The process comprising polymerization in aqueous emulsion with free radical initiation at a temperature in the range of from 0° to 100°C 100 parts by weight of A. about 50 to 90% by weight of at least one nitrile having the structure ##EQU5## wherein R is hydrogen, a lower alkyl group having from 1 to 4 carbon atoms or a halogen, and B. from 10 to 50% by weight of at least one member selected from the group consisting of indene and coumarone in the presence of from 1 to 40 parts by weight of C. a rubbery polymer of at least 50% by weight of a conjugated diene monomer selected from the group consisting of butadiene and isoprene and up to 50% by weight of at least one member selected from the group consisting of styrene, acrylonitrile, and ethyl acrylate wherein all or part of (A) and part of (B) are present when the polymerization reaction is initiated and the remainder of (B) or (A) plus (B) is added continuously or incrementally during the course of the polymerization.
Claim 8
Dependent Claim
179 words
The process comprising polymerization in aqueous emulsion with free radical initiation at a temperature in the range of from 0° to 100°C 100 parts by weight of A. about 50 to 90% by weight of at least one nitrile having the structure ##EQU5## wherein R is hydrogen, a lower alkyl group having from 1 to 4 carbon atoms or a halogen, and B. from 10 to 50% by weight of at least one member selected from the group consisting of indene and coumarone in the presence of from 1 to 40 parts by weight of C. a rubbery polymer of at least 50% by weight of a conjugated diene monomer selected from the group consisting of butadiene and isoprene and up to 50% by weight of at least one member selected from the group consisting of styrene, acrylonitrile, and ethyl acrylate wherein all or part of (A) and part of (B) are present when the polymerization reaction is initiated and the remainder of (B) or (A) plus (B) is added continuously or incrementally during the course of the polymerization.
Claim 9
Dependent Claim
9 words
The process of claim 6 wherein (A) is acrylonitrile.
Claim 10
Dependent Claim
9 words
The process of claim 7 wherein (B) is indene.
Claim 11
Dependent Claim
11 words
The process of claim 8 wherein (C) is a butadiene-acrylonitrile copolymer.
Claim 12
Dependent Claim
27 words
The process of claim 9 wherein there are 60 to 90% by weight of (A) and 10 to 40% by weight of (B) employed in the polymerization.
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) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |