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Patent US3336280A successfully refreshed from Google Patents.
US3336280A
Expired / Lapsed
US
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Process for production of rubbery polymers
Assignee: Phillips Petroleum Co
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Filing: 1960-10-14
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Granted: 1967-08-15
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Expires: 1980-10-14
Abstract
No abstract record available.
Inventors
- 👤 Floyd E Naylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:12
CPC Classifications
C; C08; C08F; C08F136/00; C08F136/02; C08F136/04; C08F136/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR PREPARING A RUBBERY POLYBUTADIENE CONTAINING AT LEAST 80 PERCENT OF 1,2-ADDITION WHICH COMPRISES CONTACTING, 1,3-BUTADIENE UNDER POLYMERIZATION CONDITIONS WITH A CATALYST COMPRISING MOLYBDENUM PENTACHLORIDE AND A COMPOUND HAVING THE FORMULA R3AL, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL, ALKARYL, ARALKYL AND CYCLOALKY RADICALS, SAID CONTACTING OCCURRING IN THE PRESENCE OF A PROMOTER COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIALKYL ETHERS, CYCLIC ETHERS, ETHERS OF ETHYLENE GLYCOL, TERTIARY AMINES CONTAINING NOT MORE THAN ONE ARYL GROUP, N,N-DIALKYL-SUBSTITUTED AMIDES, AND ALKYLIDENEAMINES.
Claim 2
Dependent Claim
87 words
A PROCESS FOR PREPARING A RUBBERY POLYBUTADIENE CONTAINING AT LEAST 80 PERCENT OF 1,2-ADDITION WHICH COMPRISES CONTACTING, 1,3-BUTADIENE UNDER POLYMERIZATION CONDITIONS WITH A CATALYST COMPRISING MOLYBDENUM PENTACHLORIDE AND A COMPOUND HAVING THE FORMULA R3AL, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL, ALKARYL, ARALKYL AND CYCLOALKY RADICALS, SAID CONTACTING OCCURRING IN THE PRESENCE OF A PROMOTER COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIALKYL ETHERS, CYCLIC ETHERS, ETHERS OF ETHYLENE GLYCOL, TERTIARY AMINES CONTAINING NOT MORE THAN ONE ARYL GROUP, N,N-DIALKYL-SUBSTITUTED AMIDES, AND ALKYLIDENEAMINES.
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |