US2584773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion polymerization of vinylidene compounds in the presence of hydroperoxides of alkyltetrahydronaphthalenes
Assignee: Phillips Petroleum Co
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Filing: 1949-12-12
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Granted: 1952-02-05
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Expires: 1969-12-12
Abstract
No abstract record available.
Inventors
- 👤 William B Reynolds
- 👤 John E Wicklatz
- 👤 Thomas J Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:29
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
AN IMPROVED PROCESS FOR THE PRODUCTION OF SYNTHETIC RUBBER, WHICH COMPRISES ESTABLISHING AND MAINTAINING AT A POLYMERIZATION TEMPERATURE BETWEEN 10 AND-40* C. AN EMULSION OF AN AQUEOUS PHASE HAVING A PH BETWEEN 9 AND 12, A LIQUID MONOMERIC MATERIAL COMPRISING A MAJOR AMOUNT OF 1,3-BUTADINE AND A MINOR AMOUNT OF STYRENE AN ALKALI METAL SOAP EMULSIFYING AGENT, AN ALKYL MERCAPTAN HAVING BETWEEN EIGHT AND SIXTEEN CARBON ATOMS PER MOLECULE, AND A POLYMERIZATION CATALYST COMPOSITION COMPRISING 0.1 TO 10 MILLIMOLS OF 1-METHYL-1,2,3,4-TETRAHYDRONAPHTHALENE1-HYDROPEROXIDE TOGETHER WITH 0.1 TO 3 MILLIMOLS OF AN ALKALI METAL FERROUS PYROPHOSPHATE COMPLEX AND A REDUCING SUGAR, SAID PARTS BEING PARTS BY WEIGHT PER 100 PARTS OF SAID MONOMERIC MATERIAL.
Claim 2
Dependent Claim
111 words
AN IMPROVED PROCESS FOR THE PRODUCTION OF SYNTHETIC RUBBER, WHICH COMPRISES ESTABLISHING AND MAINTAINING AT A POLYMERIZATION TEMPERATURE BETWEEN 10 AND-40* C. AN EMULSION OF AN AQUEOUS PHASE HAVING A PH BETWEEN 9 AND 12, A LIQUID MONOMERIC MATERIAL COMPRISING A MAJOR AMOUNT OF 1,3-BUTADINE AND A MINOR AMOUNT OF STYRENE AN ALKALI METAL SOAP EMULSIFYING AGENT, AN ALKYL MERCAPTAN HAVING BETWEEN EIGHT AND SIXTEEN CARBON ATOMS PER MOLECULE, AND A POLYMERIZATION CATALYST COMPOSITION COMPRISING 0.1 TO 10 MILLIMOLS OF 1-METHYL-1,2,3,4-TETRAHYDRONAPHTHALENE1-HYDROPEROXIDE TOGETHER WITH 0.1 TO 3 MILLIMOLS OF AN ALKALI METAL FERROUS PYROPHOSPHATE COMPLEX AND A REDUCING SUGAR, SAID PARTS BEING PARTS BY WEIGHT PER 100 PARTS OF SAID MONOMERIC MATERIAL.
References Cited (Backward Citations)
US2209246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |