US2945834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanizable rubber composition and process for vulcanizing same
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1957-02-04
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Granted: 1960-07-19
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Expires: 1977-02-04
Abstract
No abstract record available.
Inventors
- 👤 Coulter David James Bryans
- 👤 Kerrigan Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:36
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/43
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS FOR VULCANIZING A RUBBERY POLYMER OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF BUTADIENE1:3 AND 2-METHYL BUTADIENE-1:3 WHICH COMPRISES HEATING SAID POLYMER AT A VULCANIZILNG TEMPERATURE IN THE PRESENCE OF BETWEEN ABOUT 1 AND ABOUT 3 PERCENT OF A RUBBER VULCANIZING AGENT, UP TO ABOUT 2 PERCENT OF A RUBBER VULCANIZING ACCELERATOR CONTAINING THE THIAZOLE NUCLEUS AND BETWEEN ABOUT 0.2 AND 3 PERCENT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SULPHAMIC ACID, SALTS OF SULPHAMIC ACID, 4:4-SULPHONYLDIMORPHOLINE, 1:4-BIS (DIMETHYLSULPHAMYL) PIPERAZINE, 2:4-DICHLOROPHENYL DIMETHYLSULPHAMATE, P-CYCLOHEXYLPHENYL DIMETHYLSULPHAMATE AND CYCLOHEXYL SULPHAMIC ACID.
Claim 2
Dependent Claim
93 words
A PROCESS FOR VULCANIZING A RUBBERY POLYMER OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF BUTADIENE1:3 AND 2-METHYL BUTADIENE-1:3 WHICH COMPRISES HEATING SAID POLYMER AT A VULCANIZILNG TEMPERATURE IN THE PRESENCE OF BETWEEN ABOUT 1 AND ABOUT 3 PERCENT OF A RUBBER VULCANIZING AGENT, UP TO ABOUT 2 PERCENT OF A RUBBER VULCANIZING ACCELERATOR CONTAINING THE THIAZOLE NUCLEUS AND BETWEEN ABOUT 0.2 AND 3 PERCENT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SULPHAMIC ACID, SALTS OF SULPHAMIC ACID, 4:4-SULPHONYLDIMORPHOLINE, 1:4-BIS (DIMETHYLSULPHAMYL) PIPERAZINE, 2:4-DICHLOROPHENYL DIMETHYLSULPHAMATE, P-CYCLOHEXYLPHENYL DIMETHYLSULPHAMATE AND CYCLOHEXYL SULPHAMIC ACID.
References Cited (Backward Citations)
US2704761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |