US2625537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diazothioethers in emulsion polymerization
Assignee: Phillips Petroleum Co
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Filing: 1947-06-02
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Granted: 1953-01-13
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Expires: 1967-06-02
Abstract
No abstract record available.
Inventors
- 👤 Izaak M Kolthoff
- 👤 Wesley J Dale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:12
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/04; Y; Y10; Y10S; Y10S526/00; Y10S526/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
IN THE POLYMERIZATION OF A MONOMERIC MATERIAL COMPRISING A MAJOR AMOUNT OF 1,3-BUTADIENE AND A MINOR AMOUNT OF STYRENE IN AN AQUEOUS EMULSION TO PRODUCE A SYNTHETIC RUBBER, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID POLYMERIZATION AT A POLYMERIZATION TEMPERATURE BETWEEN ABOUT 0* C. AND ABOUT 50* C. IN THE PRESENCE OF A COMPOSITION COMPRISING 0.05 TO 2 PARTS OF A DIAZO THIOETHER HAVING THE FORMULA
Claim 2
Dependent Claim
65 words
IN THE POLYMERIZATION OF A MONOMERIC MATERIAL COMPRISING A MAJOR AMOUNT OF 1,3-BUTADIENE AND A MINOR AMOUNT OF STYRENE IN AN AQUEOUS EMULSION TO PRODUCE A SYNTHETIC RUBBER, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID POLYMERIZATION AT A POLYMERIZATION TEMPERATURE BETWEEN ABOUT 0* C. AND ABOUT 50* C. IN THE PRESENCE OF A COMPOSITION COMPRISING 0.05 TO 2 PARTS OF A DIAZO THIOETHER HAVING THE FORMULA
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) | 1956-01-13 | 1956-07-14 | 1957-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-13 | 1960-07-14 | 1961-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-13 | 1964-07-14 | 1965-01-13 | $7700.00 | Window Closed / Lapsed |