US2776295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic rubber paste latices
Assignee: Phillips Petroleum Co
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Filing: 1951-10-26
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Granted: 1957-01-01
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Expires: 1971-10-26
Abstract
No abstract record available.
Inventors
- 👤 John E Wicklatz
- 👤 Thomas J Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:27
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN THE PRODUCTION OF A SYNTHETIC RUBBER LAXTER BY THE POLYMERIZATION IN AQUEOUS EMULSION OF A MONOMERIC MATERIAL COMPRISING A CONJUGATED DIENE, THE IMPROVEMENT COMPRISING MAINTAING FROM 15 TO NOT MORE THAN 40 PARTS BY WEIGHT OF WATER IN SAID MEMULSION PER 100 PARTS BY WEIGHT OF SAID MONOMERIC MATERIAL CHARGED, WHEREBY A SYNTHETI RUBBER PASTE LAXTEX IS FORMED, SAID PASTE LATEX HAVING A SOLIDS CONTENT OF AT LEAST 70 WEIGHT PERCENT AND BEING SUITABLE FOR VULCANIZATION WITHOUT REQUIRING PROCESS STEPS FOR FIRST EFFECTING COAGULATION OF SAME TO PRODUCE POLYMER CRUMB WITH SUBSEQUENT SEPARATION AND DRYING OF SAID CRUMB, AND RECOVERING SYNTHETIC RUBBER PASTE LATEX THUS FORMED AS A PRODUCT OF THE PROCESS.
Claim 2
Dependent Claim
113 words
IN THE PRODUCTION OF A SYNTHETIC RUBBER LAXTER BY THE POLYMERIZATION IN AQUEOUS EMULSION OF A MONOMERIC MATERIAL COMPRISING A CONJUGATED DIENE, THE IMPROVEMENT COMPRISING MAINTAING FROM 15 TO NOT MORE THAN 40 PARTS BY WEIGHT OF WATER IN SAID MEMULSION PER 100 PARTS BY WEIGHT OF SAID MONOMERIC MATERIAL CHARGED, WHEREBY A SYNTHETI RUBBER PASTE LAXTEX IS FORMED, SAID PASTE LATEX HAVING A SOLIDS CONTENT OF AT LEAST 70 WEIGHT PERCENT AND BEING SUITABLE FOR VULCANIZATION WITHOUT REQUIRING PROCESS STEPS FOR FIRST EFFECTING COAGULATION OF SAME TO PRODUCE POLYMER CRUMB WITH SUBSEQUENT SEPARATION AND DRYING OF SAID CRUMB, AND RECOVERING SYNTHETIC RUBBER PASTE LATEX THUS FORMED AS A PRODUCT OF THE PROCESS.
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) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |