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US4273897A
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Vulcanizable rubber compositions with amino acids
Assignee: Sanyo Trading Co Ltd
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Filing: 1979-05-23
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Granted: 1981-06-16
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Expires: 1999-05-23
Abstract
Abstract A vulcanizable composition comprising a bromobutyl rubber and a specific amino acid.
Inventors
- 👤 Masao Onizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:11
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
52 words
A vulcanizable composition comprising bromobutyl rubber and at least one amino acid selected from the group consisting of arginine, lysine, hydroxylysine, ornithine, cystine, asparagine, glutamine and citrulline, the amino acid component being present in an amount of 0.1 to 50 parts by weight per 100 parts by weight of the bromobutyl rubber.
Claim 2
Dependent Claim
52 words
A vulcanizable composition comprising bromobutyl rubber and at least one amino acid selected from the group consisting of arginine, lysine, hydroxylysine, ornithine, cystine, asparagine, glutamine and citrulline, the amino acid component being present in an amount of 0.1 to 50 parts by weight per 100 parts by weight of the bromobutyl rubber.
Claim 3
Dependent Claim
27 words
The composition of claim 1 which contains 0.1 to 10 parts by weight of the amino acid component per 100 parts by weight of the bromobutyl rubber.
Claim 4
Dependent Claim
28 words
The composition of claim 2 or 1 which contains at least one amino acid selected from the group consisting of arginine, lysine, hydroxylysine, ornithine, asparagine, glutamine and citrulline.
Claim 5
Dependent Claim
21 words
The composition of claim 2 or 1 wherein the amino acid component is the only vulcanizing agent present in the composition.
Claim 6
Dependent Claim
19 words
The composition of claim 3 wherein the amino acid component is the only vulcanizing agent present in the composition.
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) | 1984-06-15 | 1984-12-15 | 1985-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-15 | 1988-12-15 | 1989-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-15 | 1992-12-15 | 1993-06-16 | $7700.00 | Window Closed / Lapsed |