US2523596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion polymerization in the presence of a mercaptan modifier
Assignee: Phillips Petroleum Co
•
Filing: 1946-06-17
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Granted: 1950-09-26
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Expires: 1966-06-17
Abstract
No abstract record available.
Inventors
- 👤 Walter A Schulze
- 👤 James E Troyan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:02
CPC Classifications
C; C08; C08F; C08F4/00; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PROCESS FOR THE PRODUCTION OF A COPOLYMER OF BUTADIENE AND STYRENE WHICH COMPRISES FORMING AN AQUEOUS EMULSION OF BUTADIENE AND STYRENE, CARRYING OUT THE POLYMERIZATION OF SAID BUTADIENE AND STYRENE AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 80 TO ABOUT 125* F. IN THE PRESENCE OF A MINOR PROPORTION OF A TERTIARY HEXADECYL MERCAPTAN, AGITATING SAID EMULSION AT
Claim 2
Dependent Claim
61 words
A PROCESS FOR THE PRODUCTION OF A COPOLYMER OF BUTADIENE AND STYRENE WHICH COMPRISES FORMING AN AQUEOUS EMULSION OF BUTADIENE AND STYRENE, CARRYING OUT THE POLYMERIZATION OF SAID BUTADIENE AND STYRENE AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 80 TO ABOUT 125* F. IN THE PRESENCE OF A MINOR PROPORTION OF A TERTIARY HEXADECYL MERCAPTAN, AGITATING SAID EMULSION AT
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-25 | 1954-03-27 | 1954-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-25 | 1958-03-27 | 1958-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-25 | 1962-03-27 | 1962-09-26 | $7700.00 | Window Closed / Lapsed |