Patent US2679497A successfully refreshed from Google Patents.
US2679497A
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Treatment of rosin soaps and use of treated rosin soaps in emulsion polymerization
Assignee: Phillips Petroleum Co
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Filing: 1949-07-14
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Granted: 1954-05-25
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Expires: 1969-07-14
Abstract
No abstract record available.
Inventors
- 👤 Carl A Uraneck
- 👤 Spencer H Landes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:24
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN THE POLYMERIZATION OF A MONOMERIC MATERIAL COMPRISING 1,3-BUTADIENE WHILE DISPERSED IN AN AQUEOUS EMULSION IN THE PRESENCE OF AN EMULSIFYING AGENT UNDER POLYMERIZATION CONDITIONS TO PRODUCE SYNTHETIC RUBBER, IN THE PRESENCE OF AN INITIATOR COMPOSITION COMPRISING AN ORGANIC HYDROIPEROXIDE AND AN ACTIVATOR-REDUCTANT COMPOSITION, THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN SAID AQUEOUS MEDIUM PRIOR TO SAID POLYMERIZATION AS AN EMULSIFYING AGENT POTASSIUM ABIETATE WHICH HAS BEEN TREATED IN AQUEOUS SOLUTION AT A TEMPERATURE OF 65 TO 80* F. WITH 0.2 TO 2 MILLIMOLS OF POTASSIUM HYPOCHLORITE PER PART BY WEIGHT OF SAID POTASSIUM ABIETATE.
Claim 2
Dependent Claim
94 words
IN THE POLYMERIZATION OF A MONOMERIC MATERIAL COMPRISING 1,3-BUTADIENE WHILE DISPERSED IN AN AQUEOUS EMULSION IN THE PRESENCE OF AN EMULSIFYING AGENT UNDER POLYMERIZATION CONDITIONS TO PRODUCE SYNTHETIC RUBBER, IN THE PRESENCE OF AN INITIATOR COMPOSITION COMPRISING AN ORGANIC HYDROIPEROXIDE AND AN ACTIVATOR-REDUCTANT COMPOSITION, THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN SAID AQUEOUS MEDIUM PRIOR TO SAID POLYMERIZATION AS AN EMULSIFYING AGENT POTASSIUM ABIETATE WHICH HAS BEEN TREATED IN AQUEOUS SOLUTION AT A TEMPERATURE OF 65 TO 80* F. WITH 0.2 TO 2 MILLIMOLS OF POTASSIUM HYPOCHLORITE PER PART BY WEIGHT OF SAID POTASSIUM ABIETATE.
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) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |