US3094512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of low vinyl low trans content random copolymer
Assignee: Phillips Petroleum Co
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Filing: 1959-12-31
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Granted: 1963-06-18
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Expires: 1979-12-31
Abstract
No abstract record available.
Inventors
- 👤 James N Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:33
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F236/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS FOR PREPARING A RANDOM COPOLYMER WHICH COMPRISES CHARGING TO A POLYMERIZATION ZONE CONTAINING A CATALYST OF THE FORMULA R(LI)X WHERE X IS AN INEGER FROM 1 TO 4, R IS A HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, CYCLOALIPHATIC, AND AROMATIC RADICALS AND A HYDROCARBON DILUENT, A CONJUGATED DIENE OF 4 TO 5 CARBON ATOMS AND SIMULTANEOUSLY A VINYLSUBSTITUTED AROMATIC HYDROCARBON IN WHICH SAID VINYL GROUP IS ATTACHED TO A NUCLEAR CARBON ATOM, SAID MONOMERS BEING CHARGED AT A RATE LESS THAN THE NORMAL POLYMERIZATION RATE OF THE SYSTEM UNDER THE CONDITIONS EMPOLYED.
Claim 2
Dependent Claim
97 words
A PROCESS FOR PREPARING A RANDOM COPOLYMER WHICH COMPRISES CHARGING TO A POLYMERIZATION ZONE CONTAINING A CATALYST OF THE FORMULA R(LI)X WHERE X IS AN INEGER FROM 1 TO 4, R IS A HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, CYCLOALIPHATIC, AND AROMATIC RADICALS AND A HYDROCARBON DILUENT, A CONJUGATED DIENE OF 4 TO 5 CARBON ATOMS AND SIMULTANEOUSLY A VINYLSUBSTITUTED AROMATIC HYDROCARBON IN WHICH SAID VINYL GROUP IS ATTACHED TO A NUCLEAR CARBON ATOM, SAID MONOMERS BEING CHARGED AT A RATE LESS THAN THE NORMAL POLYMERIZATION RATE OF THE SYSTEM UNDER THE CONDITIONS EMPOLYED.
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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |