US2706192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for increasing polymerization rate in salt-antifreeze emulsion polymerization systems
Assignee: Phillips Petroleum Co
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Filing: 1951-11-16
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Granted: 1955-04-12
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Expires: 1971-11-16
Abstract
No abstract record available.
Inventors
- 👤 Edward H Hoag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:40
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN THE PRODUCTION OF SYNTHETIC RUBBER BY POLYMERIZATION OF MONOMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF BUTADIENE AND BUTADIENE-STYRENE IN AQUEOUS EMULSION AT A TEMPERATURE BELOW 5* C., THE STEPS WHICH COMPRISE PROVIDING AN AQUEOUS SOLUTION OF SODIUM CHLORIDE, PROVIDING AN AQUEOUS EMULSIFIER SOLUTION OF SODIUM CAPRYLATE, CHARGING SAID SOLUTIONS TO A POLYMERIZATION REACTOR MAINTAINED AT A TEMPERATURE BELOW 5*C., CHARGING AN IRON PYROPHOSPHATE ACTIVATOR, AN OXIDIZING AGENT SELECTED FROM THE GROUP CONSISTING OF TERTIARY BUTYLISOPROPYLBENZENE HYDROPEROXIDE AND DIISOPROPYLBENZENE HYDROPEROXIDE, AND A TERTIARY C6 MERCAPTAN TO SAID POLYMERIZATION REACTOR, AND RECOVERING THE RESULTING POLYMER FROM SAID REACTOR.
Claim 2
Dependent Claim
98 words
IN THE PRODUCTION OF SYNTHETIC RUBBER BY POLYMERIZATION OF MONOMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF BUTADIENE AND BUTADIENE-STYRENE IN AQUEOUS EMULSION AT A TEMPERATURE BELOW 5* C., THE STEPS WHICH COMPRISE PROVIDING AN AQUEOUS SOLUTION OF SODIUM CHLORIDE, PROVIDING AN AQUEOUS EMULSIFIER SOLUTION OF SODIUM CAPRYLATE, CHARGING SAID SOLUTIONS TO A POLYMERIZATION REACTOR MAINTAINED AT A TEMPERATURE BELOW 5*C., CHARGING AN IRON PYROPHOSPHATE ACTIVATOR, AN OXIDIZING AGENT SELECTED FROM THE GROUP CONSISTING OF TERTIARY BUTYLISOPROPYLBENZENE HYDROPEROXIDE AND DIISOPROPYLBENZENE HYDROPEROXIDE, AND A TERTIARY C6 MERCAPTAN TO SAID POLYMERIZATION REACTOR, AND RECOVERING THE RESULTING POLYMER FROM SAID REACTOR.
References Cited (Backward Citations)
US2615009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-11 | 1958-10-11 | 1959-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-11 | 1962-10-11 | 1963-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-11 | 1966-10-11 | 1967-04-12 | $7700.00 | Window Closed / Lapsed |