US2910451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blending polymers of 1-olefins with synthetic rubber
Assignee: Phillips Petroleum Co
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Filing: 1957-01-09
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Granted: 1959-10-27
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Expires: 1977-01-09
Abstract
No abstract record available.
Inventors
- 👤 Kenneth R Cantwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:16
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F255/00; C08L; C08L21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A METHOD FOR PREPARING MIXTURES OF 1-OLEFIN POLYMERS AND CONJUGATED DIENE POLYMERS WHICH COMPRISES POLYMERIZING A 1-OLEFIN OF 2 TO 8 CARBON ATOMS AND NO BRANCHING NEARER THE DOUBLE BOND THAN THE 4-POSITION IN THE PRESENCE OF A LIQUID NONPOLYMERIZABLE HYDROCARBON, ADDING A CONJUGATED DIENE TO THE RESULTING POLYMERHYDROCARBON MIXTURE, POLYMERIZING THE CONJUGATED DIENE IN SAID MIXTURE AND THEREAFTER RECOVERING THE MIXTURE OF POLYMER FROM THE HYDROCARBON.
Claim 2
Independent Claim
67 words
A METHOD FOR PREPARING MIXTURES OF 1-OLEFIN POLYMERS AND CONJUGATED DIENE POLYMERS WHICH COMPRISES POLYMERIZING A 1-OLEFIN OF 2 TO 8 CARBON ATOMS AND NO BRANCHING NEARER THE DOUBLE BOND THAN THE 4-POSITION IN THE PRESENCE OF A LIQUID NONPOLYMERIZABLE HYDROCARBON, ADDING A CONJUGATED DIENE TO THE RESULTING POLYMERHYDROCARBON MIXTURE, POLYMERIZING THE CONJUGATED DIENE IN SAID MIXTURE AND THEREAFTER RECOVERING THE MIXTURE OF POLYMER FROM THE HYDROCARBON.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |