US2687444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanizable rubbery polymer compositions comprising zinc mono alkylbenzene sulfonates as vulcanization retarders
Assignee: Phillips Petroleum Co
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Filing: 1950-01-04
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Granted: 1954-08-24
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Expires: 1970-01-04
Abstract
No abstract record available.
Inventors
- 👤 Willie W Crouch
- 👤 William B Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:33
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN THE PROCESS OF MAKING A NATURAL RUBBER PRODUCT WHEREIN THE RUBBER MIX, CONTAINING FROM 10 TO 65 PARTS BY WEIGHT OF A FURNACE CARBON BLACK HAVING A PH OF FROM 8 TO 10.5 FROM 0.1 TO 4 PARTS BY WEIGHT OF AN ORGANIC ACCELERATOR OF VULCANIZATION AND FROM 1 TO 3 PARTS BY WEIGHT OF SULFUR, EACH PER 100 PARTS BY WEIGHT OF SAID NATURAL RUBBER, IS FORMED AND VULCANIZED, THAT IMPROVEMENT WHICH COMPRISES ADDING TO SAID RUBBER MIX FROM 0.5 TO 6 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF SAID NATURAL RUBBER OF A ZINC SALT OF A MIXTURE OF MONOALKYLBENZENE SULFONATES CONTAINING 12 TO 14 CARBON ATOMS IN THE ALKYL GROUP.
Claim 2
Dependent Claim
116 words
IN THE PROCESS OF MAKING A NATURAL RUBBER PRODUCT WHEREIN THE RUBBER MIX, CONTAINING FROM 10 TO 65 PARTS BY WEIGHT OF A FURNACE CARBON BLACK HAVING A PH OF FROM 8 TO 10.5 FROM 0.1 TO 4 PARTS BY WEIGHT OF AN ORGANIC ACCELERATOR OF VULCANIZATION AND FROM 1 TO 3 PARTS BY WEIGHT OF SULFUR, EACH PER 100 PARTS BY WEIGHT OF SAID NATURAL RUBBER, IS FORMED AND VULCANIZED, THAT IMPROVEMENT WHICH COMPRISES ADDING TO SAID RUBBER MIX FROM 0.5 TO 6 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF SAID NATURAL RUBBER OF A ZINC SALT OF A MIXTURE OF MONOALKYLBENZENE SULFONATES CONTAINING 12 TO 14 CARBON ATOMS IN THE ALKYL GROUP.
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) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |