US2629709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion polymerization of vinylidene compounds in the presence of carbamates of polyamines
Assignee: Phillips Petroleum Co
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Filing: 1950-09-05
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Granted: 1953-02-24
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Expires: 1970-09-05
Abstract
No abstract record available.
Inventors
- 👤 Carl A Uraneck
- 👤 Alvin C Rothlisberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:04
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN THE PRODUCTION OF SYNTHETIC RUBBER BY THE POLYMERIZATION OF A MONOMERIC MATERIAL COMPRISING A MAJOR PORTION OF 1,3-BUTADIENE AND A MINOR PORTION OF STYRENE WHILE DISPERSED IN AN AQUEOUS EMULSION IN THE PRESENCE OF A CATALYST COMPOSITION AT A POLYMERIZATION TEMPERATURE, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID POLYMERIZATION WITH THE PH OF SAID AQUEOUS EMULSION BETWEEN 9 AND 12 AND USING AS SAID CATALYST COMPOSITION 0.1 TO 10 MILLIMOLS OF T-C4H9C6H4C(CH3)2O2H TOGETHER WITH 0.02 TO 5 PARTS OF A CARBAMATE OF TETRAETHYLENEPENTAMINE, SAID AMOUNTS BEING PER 100 PARTS BY WEIGHT OF SAID MONOMERIC MATERIAL.
Claim 2
Dependent Claim
95 words
IN THE PRODUCTION OF SYNTHETIC RUBBER BY THE POLYMERIZATION OF A MONOMERIC MATERIAL COMPRISING A MAJOR PORTION OF 1,3-BUTADIENE AND A MINOR PORTION OF STYRENE WHILE DISPERSED IN AN AQUEOUS EMULSION IN THE PRESENCE OF A CATALYST COMPOSITION AT A POLYMERIZATION TEMPERATURE, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID POLYMERIZATION WITH THE PH OF SAID AQUEOUS EMULSION BETWEEN 9 AND 12 AND USING AS SAID CATALYST COMPOSITION 0.1 TO 10 MILLIMOLS OF T-C4H9C6H4C(CH3)2O2H TOGETHER WITH 0.02 TO 5 PARTS OF A CARBAMATE OF TETRAETHYLENEPENTAMINE, SAID AMOUNTS BEING PER 100 PARTS BY WEIGHT OF SAID MONOMERIC MATERIAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-24 | 1956-08-25 | 1957-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-24 | 1960-08-25 | 1961-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-24 | 1964-08-25 | 1965-02-24 | $7700.00 | Window Closed / Lapsed |