US2629708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion polymerization of vinylidene compounds in the presence of hydrazine-polyaminecarbamate compositions
Assignee: Phillips Petroleum Co
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Filing: 1950-06-29
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Granted: 1953-02-24
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Expires: 1970-06-29
Abstract
No abstract record available.
Inventors
- 👤 Carl A Uraneck
- 👤 Richard J Goertz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:29
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10S; Y10S526/00; Y10S526/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A PROCESS FOR THE PRODUCTION OF SYNTHETIC RUBBER, WHICH COMPRISES POLYMERIZING A MONOMERIC MATERIAL COMPRISING A MAJOR PORTION OF 1,3-BUTADIENE AND A MINOR PORTION OF STYRENE WHILE DISPERSED IN THE MINOR PORTION OF STYRENE AGENT IN AN AQUEOUS MEDIUM HAVING A PH BETWEEN 9 AND 12 AT A POLYMERIZATION TEMPERATURE BETWEEN 30 AND -40* C. IN THE PRESENCE OF A POLYMERIZATION CATALYST COMPOSITION COMPRISING 0.1 TO 10 MILLIMOLS OF A MONOHYDROPEROXIDE OF TERT-BUTYLISOPROPYLBENZENE AND 0.02 TO 5 PARTS BY WEIGHT OF DIETHYLENETRIAMINEMONOCARBAMATE AND AN EQUIMOLAR AMOUNT OF HYDRAZINE, SAID AMOUNTS BEING PER 100 PARTS BY WEIGHT OF SAID MONOMERIC MATERIAL.
Claim 2
Dependent Claim
100 words
A PROCESS FOR THE PRODUCTION OF SYNTHETIC RUBBER, WHICH COMPRISES POLYMERIZING A MONOMERIC MATERIAL COMPRISING A MAJOR PORTION OF 1,3-BUTADIENE AND A MINOR PORTION OF STYRENE WHILE DISPERSED IN THE MINOR PORTION OF STYRENE AGENT IN AN AQUEOUS MEDIUM HAVING A PH BETWEEN 9 AND 12 AT A POLYMERIZATION TEMPERATURE BETWEEN 30 AND -40* C. IN THE PRESENCE OF A POLYMERIZATION CATALYST COMPOSITION COMPRISING 0.1 TO 10 MILLIMOLS OF A MONOHYDROPEROXIDE OF TERT-BUTYLISOPROPYLBENZENE AND 0.02 TO 5 PARTS BY WEIGHT OF DIETHYLENETRIAMINEMONOCARBAMATE AND AN EQUIMOLAR AMOUNT OF HYDRAZINE, 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 |