US3796762A
Expired / Lapsed
US
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Low molecular weight diene polymers using aqueous hydrogen peroxide and cyclohexanol(one)medium
Assignee: Atlantic Richfield Co
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Filing: 1971-04-05
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Granted: 1974-03-12
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Expires: 1991-04-05
Abstract
Abstract THERE IS DISCLOSED A PROCESS FOR POLYMERIZING CONJUGATED DIENE MONOMERS TO FORM RELATIVELY LOW MOLECULAR WEIGHT POLYMERS. THE REACTION CAN BE CONDUCTED AT TEMPERATURES OF ABOVE 100*C. TO ABOUT 200*C. IN THE PRESENCE OF A HYDROGEN PEROXIDE CATALYST AND A REACTION MEDIUM WHICH IS AN ESSENTIALLY WATER-INSOLUBLE, ALICYCLIC, MONOCYCLIC ALCOHOL OR KETONE HAVING AT LEAST SIX CARBON ATOMS IN A CARBOCYCLIC RING. THE REACTION SYSTEM HAS AT LEAST TWO LIQUID PHASES FORMED BY THE MONOMER, CATALYST AND REACTION MEDIUM. CYCLOHEXANOL IS A PREFERRED REACTION MEDIUM.
Inventors
- 👤 J Verdol
- 👤 P Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:52
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; C08F; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10S; Y10S260/00; Y10S260/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |