Patent US2734877A successfully refreshed from Google Patents.
US2734877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acceleration of the dimethylol phenol
Assignee: —
•
Filing: 1952-06-18
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Granted: 1956-02-14
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Expires: 1972-06-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:10
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20; C08L23/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN THE METHOD OF VULCANIZING A RUBBERY COPOLYMER OF AN ISOOLEFIN HAVING FROM 4 TO 7 CARBON ATOMS WITH FROM 0.5 TO 10% OF A CONJUGATED DIOLEFIN HAVING FROM 4 TO 14 CARBON ATOMS BY HEATING THE SAID RUBBERY COPOLYMER IN ADMIXTURE WITH A RESINOUS 2,6-DIMETHYLOL-4HYDROCARBON SUBSTITED PHENOL AS THE VULCANIXING AGENT, THE IMPROVEMENT WHICH COMPRISES THE STEP OF ACCELERATING THE SAID VULCANIZATION BY CARRYING OUT THE SAID VULCANIZATION IN THE PRESENCE OF FROM 1 TO 15 PARTS OF RUBBERY POLYCHLOROPRENE, PER 100 PARTS OF SAID RUBBERY COPOLYMER.
Claim 2
Dependent Claim
88 words
IN THE METHOD OF VULCANIZING A RUBBERY COPOLYMER OF AN ISOOLEFIN HAVING FROM 4 TO 7 CARBON ATOMS WITH FROM 0.5 TO 10% OF A CONJUGATED DIOLEFIN HAVING FROM 4 TO 14 CARBON ATOMS BY HEATING THE SAID RUBBERY COPOLYMER IN ADMIXTURE WITH A RESINOUS 2,6-DIMETHYLOL-4HYDROCARBON SUBSTITED PHENOL AS THE VULCANIXING AGENT, THE IMPROVEMENT WHICH COMPRISES THE STEP OF ACCELERATING THE SAID VULCANIZATION BY CARRYING OUT THE SAID VULCANIZATION IN THE PRESENCE OF FROM 1 TO 15 PARTS OF RUBBERY POLYCHLOROPRENE, PER 100 PARTS OF SAID RUBBERY COPOLYMER.
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) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |