US3950238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation cured acrylonitrile-butadiene elastomers
Assignee: Motors Liquidation Co
•
Filing: 1974-08-09
•
Granted: 1976-04-13
•
Expires: 1994-08-09
Abstract
Abstract In accordance with a preferred embodiment of this invention, the ultimate elongation of an electron beam radiation cured acrylonitrile-butadiene elastomer is significantly increased by the incorporation of a preferred noncrosslinking monomer, glycidyl methacrylate, in combination with the conventional crosslinking monomer, trimethylolpropanetrimethacrylate, prior to the radiation curing process.
Inventors
- 👤 Roger J. Eldred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:29
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/103; C08F; C08F279/00; C08F279/02; C08F285/00; C08F291/00; C08F291/02; C08F8/00; C08K5/05; C08K5/053; C08K5/15; C08K5/151; C08K5/1515
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
126 words
An acrylonitrile-butadiene elastomeric composition having improved elongation properties comprising the high energy electron beam radiation-induced reaction product of, by weight: a. 100 parts of an acrylonitrile-butadiene random compolymer consisting of from 30 to 45% acrylonitrile, b. from 15 to 80 parts of carbon black, c. from 4 to 16 parts of trimethylolpropanetrimethacrylate, and d. a polymerizable noncrosslinking monomer selected from the group consisting of ##EQU2## wherein R 1 may be --H or --CH 3 , and R 2 may be --H or an alkyl group having up to 10 carbon atoms wherein the mole ratio of noncrosslinking monomer to trimethylolpropanetrimethacrylate is within the range of 1.0 to 1.4, and wherein said trimethylolpropanetrimethacrylate, said noncrosslinking monomer and said carbon black are initially uniformly dispersed throughout said copolymer.
Claim 2
Dependent Claim
126 words
An acrylonitrile-butadiene elastomeric composition having improved elongation properties comprising the high energy electron beam radiation-induced reaction product of, by weight: a. 100 parts of an acrylonitrile-butadiene random compolymer consisting of from 30 to 45% acrylonitrile, b. from 15 to 80 parts of carbon black, c. from 4 to 16 parts of trimethylolpropanetrimethacrylate, and d. a polymerizable noncrosslinking monomer selected from the group consisting of ##EQU2## wherein R 1 may be --H or --CH 3 , and R 2 may be --H or an alkyl group having up to 10 carbon atoms wherein the mole ratio of noncrosslinking monomer to trimethylolpropanetrimethacrylate is within the range of 1.0 to 1.4, and wherein said trimethylolpropanetrimethacrylate, said noncrosslinking monomer and said carbon black are initially uniformly dispersed throughout said copolymer.
Claim 3
Dependent Claim
81 words
An acrylonitrile-butadiene elastomeric composition having improved elongation properties comprising the high energy electron beam radiation-induced reaction product of, by weight: a. 100 parts of an acrylonitrile-butadiene random copolymer having from 31% to 39% acrylonitrile, b. from 20 to 60 parts carbon black, c. from 6 to 12 parts trimethylolpropanetrimethacrylate, and d. from 1.15 to 1.25 moles of glycidyl methacrylate per each mole of trimethylolpropanetrimethacrylate, wherein said trimethylolpropanetrimethacrylate, said glycidyl methacrylate and said carbon black are initially uniformly dispersed throughout said copolymer.
Claim 4
Dependent Claim
81 words
An acrylonitrile-butadiene elastomeric composition having improved elongation properties comprising the high energy electron beam radiation-induced reaction product of, by weight: a. 100 parts of an acrylonitrile-butadiene random copolymer having from 31% to 39% acrylonitrile, b. from 20 to 60 parts carbon black, c. from 6 to 12 parts trimethylolpropanetrimethacrylate, and d. from 1.15 to 1.25 moles of glycidyl methacrylate per each mole of trimethylolpropanetrimethacrylate, wherein said trimethylolpropanetrimethacrylate, said glycidyl methacrylate and said carbon black are initially uniformly dispersed throughout said copolymer.
Claim 5
Dependent Claim
79 words
An acrylonitrile-butadiene elastomeric composition having improved elongation properties comprising the high energy electron beam radiation-induced reaction product of, by weight: a. 100 parts of an acrylonitrile-butadiene random copolymer having from 31 to 39% acrylonitrile, b. from 20 to 60 parts carbon black, c. from 6 to 12 parts trimethylolpropanetrimethacrylate, and d. from 1.15 to 1.25 moles of 2-hydroxypropylacrylate per each mole of trimethylolpropanetrimethacrylate, wherein said trimethylolpropanetrimethacrylate, said 2-hydroxypropylacrylate and said carbon black are initially uniformly dispersed throughout said copolymer.
Claim 6
Dependent Claim
79 words
An acrylonitrile-butadiene elastomeric composition having improved elongation properties comprising the high energy electron beam radiation-induced reaction product of, by weight: a. 100 parts of an acrylonitrile-butadiene random copolymer having from 31 to 39% acrylonitrile, b. from 20 to 60 parts carbon black, c. from 6 to 12 parts trimethylolpropanetrimethacrylate, and d. from 1.15 to 1.25 moles of 2-hydroxypropylacrylate per each mole of trimethylolpropanetrimethacrylate, wherein said trimethylolpropanetrimethacrylate, said 2-hydroxypropylacrylate and said carbon black are initially uniformly dispersed throughout said copolymer.
References Cited (Backward Citations)
US3551311A
Cited
US3809569A
Cited
US3770490A
Cited
US3751378A
Cited
US3758439A
Cited
US3783006A
Cited
US3840448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |