US3240841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preventing cold flow in cispolybutadiene by adding a polyepoxide
Assignee: Phillips Petroleum Co
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Filing: 1962-07-09
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Granted: 1966-03-15
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Expires: 1982-07-09
Abstract
No abstract record available.
Inventors
- 👤 Henry L Hsieh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:27
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08L; C08L9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A METHOD FOR REDUCING THE TENDENCY OF CIS-POLYBUTADIENE CONTAINING AT LEAST 85 PERCENT CIS-1,4-ADDITION TO COLD FLOW PRIOR TO COMPOUNDING AND CURING SAID CISPOLYBUTADIENE WHICH COMPRISES BLENDING A SOLUTION OF SAID CIS-POLYBUTADIENE IN A HYDROCARBON SOLVENT WITH A SOLUTION OF A POLYEPOXY COMPOUND, SAID POLYEPOXY COMPOUND BEING ONE SELECTED FROM THE GROUP CONSISTING OF DIEPOXYBUTANE, 1,2,5,6 - DIEPOXYHEXANE, TRIEPOXYHEXANE, 1,2,5,6,9,10 - TRIEPOXYDECANE, 2,3,6,7,11,12-TRIEPOXYDODECANE, 2,3,5,6-DIEPOXY-9-EPOXYETHYLDODECANE, PENTAEPOXYEICOSANE, 2,3,5 - TRIEPOXYETHYL -9- EPOXYHEXADECANE, BIS(EPOXYDICYCLOPENTYL) ETHER OF ETHYLENE GLYCOL, LIMONENE DIOXIDE, VINYLCYCLOHEXENE DIOXIDE, AND EPOXIDIZED POLYBUTADIENE, IN A HYDROCARBON SOLVENT, THE AMOUNT OF SAID POLYEPOXY COMPOUND BEING IN THE RANGE OF 0.25 TO 10 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF SAID CIS-POLY BUTADIENE; RECOVERING SAID CIS-POLYBUTADIENE FROM THE RESULTING BLENDED SOLUTION, AND HEATING SAID RECOVERED CISPOLYBUTADIENE AT A TEMPERATURE IN THE RANGE OF 30-150* C. FOR A PERIOD OF FROM 5 MINUTES TO 2 HOURS.
Claim 2
Independent Claim
144 words
A METHOD FOR REDUCING THE TENDENCY OF CIS-POLYBUTADIENE CONTAINING AT LEAST 85 PERCENT CIS-1,4-ADDITION TO COLD FLOW PRIOR TO COMPOUNDING AND CURING SAID CISPOLYBUTADIENE WHICH COMPRISES BLENDING A SOLUTION OF SAID CIS-POLYBUTADIENE IN A HYDROCARBON SOLVENT WITH A SOLUTION OF A POLYEPOXY COMPOUND, SAID POLYEPOXY COMPOUND BEING ONE SELECTED FROM THE GROUP CONSISTING OF DIEPOXYBUTANE, 1,2,5,6 - DIEPOXYHEXANE, TRIEPOXYHEXANE, 1,2,5,6,9,10 - TRIEPOXYDECANE, 2,3,6,7,11,12-TRIEPOXYDODECANE, 2,3,5,6-DIEPOXY-9-EPOXYETHYLDODECANE, PENTAEPOXYEICOSANE, 2,3,5 - TRIEPOXYETHYL -9- EPOXYHEXADECANE, BIS(EPOXYDICYCLOPENTYL) ETHER OF ETHYLENE GLYCOL, LIMONENE DIOXIDE, VINYLCYCLOHEXENE DIOXIDE, AND EPOXIDIZED POLYBUTADIENE, IN A HYDROCARBON SOLVENT, THE AMOUNT OF SAID POLYEPOXY COMPOUND BEING IN THE RANGE OF 0.25 TO 10 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF SAID CIS-POLY BUTADIENE; RECOVERING SAID CIS-POLYBUTADIENE FROM THE RESULTING BLENDED SOLUTION, AND HEATING SAID RECOVERED CISPOLYBUTADIENE AT A TEMPERATURE IN THE RANGE OF 30-150* C. FOR A PERIOD OF FROM 5 MINUTES TO 2 HOURS.
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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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |