US4018750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable compositions containing chloroprene rubber
Assignee: Sanyo Trading Co Ltd
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Filing: 1976-01-29
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Granted: 1977-04-19
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Expires: 1996-01-29
Abstract
Abstract A vulcanizable composition comprising a chloroprene rubber and at least one amino acid selected from the group consisting of arginine, lysine, hydroxylysine, ornithine, cystine, asparagine, glutamine and citrulline, and further optionally, at least one metal oxide selected from the group consisting of magnesium oxide and zinc oxide. This invention provides also a vulcanizable composition comprising a chloroprene rubber, at least one amino acid selected from the group consisting of tyrosine, threonine, tryptophan, proline and hydroxyproline, and at least one metal oxide selected from the group consisting of magnesium oxide and zinc oxide.
Inventors
- 👤 Masao Onizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:32
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/175
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
28 words
A vulcanizable composition comprising a chloroprene rubber and at least one amino acid selected from the group consisting or arginine, lysine, hydroxylysine, ornithine, cystine, asparagine, glutamine and citrulline.
Claim 2
Dependent Claim
28 words
A vulcanizable composition comprising a chloroprene rubber and at least one amino acid selected from the group consisting or arginine, lysine, hydroxylysine, ornithine, cystine, asparagine, glutamine and citrulline.
Claim 3
Dependent Claim
29 words
The composition of claim 1 wherein the total amount of the amino acid is 0.01 to 50 parts by weight per 100 parts by weight of the chloroprene rubber.
Claim 4
Dependent Claim
12 words
A vulcanized rubber obtained by vulcanizing the vulcanizable composition of claim 1.
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) | 1980-04-18 | 1980-10-18 | 1981-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-18 | 1984-10-18 | 1985-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-18 | 1988-10-18 | 1989-04-19 | $7700.00 | Window Closed / Lapsed |