Patent US3074902A successfully refreshed from Google Patents.
US3074902A
Expired / Lapsed
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Process of polymerizing a conjugated diolefin polymer in the presence of an oily liquid hydrocarbon plasticizer and an alfin catalyst
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1955-05-27
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Granted: 1963-01-22
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Expires: 1975-05-27
Abstract
No abstract record available.
Inventors
- 👤 Emert S Pfau
- 👤 Gilbert H Swart
- 👤 Kermit V Weinstock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:51
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
THE PROCESS OF PRODUCTING A WORKABLE RUBBERY POLYMERIZATION PRODUCT THAT COMPRISES A POLYMER OF A CONJUGATED DIOLEFIN OF AT LEAST 90 MOONEY VISCOSITY THAT HAS A SUBSTANTIALLY UNDETERIORATED MOLECULAR STRUCTURE AND THAT CONTAINS AT LEAST 50% BY WEIGHT OF SAID CONJUGATED DIOLEFIN HAVING NOT IN EXCESS OF 8 CARBON ATOMS AND AT LEAST 20%M BASED ON THE WEIGHT OF SAID PRODUCT, OF AN OILY LIQUID HYDROCARBON PLASTICIZER THAT IS COMPATIBLE WITH SAID POLYMER THAT HAS A BOILING POINT ABOVE 450*F. AND THAT IS INTERSPERSED THROUGH IT WHICH COMPRISES MIXING SAID PLASTICIZED WITH COMPOUNDS THAT ARE POLYMERIZABLE TO FORM SAID POLYMER AND POLYMERIZING SAID COMPOUNDS IN THE PRESENCE OF SAID PLASTICIZER AND OF AN IONIC CATALYST WHICH IS A COMPLEX OF THE SODIUM COMPOUNDS OF AN ALCOHOL AND OLEFIN.
Claim 2
Dependent Claim
128 words
THE PROCESS OF PRODUCTING A WORKABLE RUBBERY POLYMERIZATION PRODUCT THAT COMPRISES A POLYMER OF A CONJUGATED DIOLEFIN OF AT LEAST 90 MOONEY VISCOSITY THAT HAS A SUBSTANTIALLY UNDETERIORATED MOLECULAR STRUCTURE AND THAT CONTAINS AT LEAST 50% BY WEIGHT OF SAID CONJUGATED DIOLEFIN HAVING NOT IN EXCESS OF 8 CARBON ATOMS AND AT LEAST 20%M BASED ON THE WEIGHT OF SAID PRODUCT, OF AN OILY LIQUID HYDROCARBON PLASTICIZER THAT IS COMPATIBLE WITH SAID POLYMER THAT HAS A BOILING POINT ABOVE 450*F. AND THAT IS INTERSPERSED THROUGH IT WHICH COMPRISES MIXING SAID PLASTICIZED WITH COMPOUNDS THAT ARE POLYMERIZABLE TO FORM SAID POLYMER AND POLYMERIZING SAID COMPOUNDS IN THE PRESENCE OF SAID PLASTICIZER AND OF AN IONIC CATALYST WHICH IS A COMPLEX OF THE SODIUM COMPOUNDS OF AN ALCOHOL AND OLEFIN.
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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |