Patent US2690610A successfully refreshed from Google Patents.
Patent US3150209A successfully refreshed from Google Patents.
US3150209A
Expired / Lapsed
US
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Compositions from terminally reactive polymers
Assignee: Phillips Petroleum Co
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Filing: 1961-05-15
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Granted: 1964-09-22
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Expires: 1981-05-15
Abstract
No abstract record available.
Inventors
- 👤 James N Short
- 👤 Charles C Bice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:49
CPC Classifications
C; C08; C08G; C08G81/00; C08G81/02; C08G81/021; C08G81/022; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/36; C08L; C08L19/00; C08L19/006; C08K; C08K5/00; C08K5/49; C08K5/5398; C08K5/5399; C08L2205/00; C08L2205/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
A METHOD OF MAKING A POLYMERIC PRODUCT WHICH COMPRISES PLASTICIZING ABOUT 75 TO 95 PARTS BY WEIGHT OF A FIRST POLYMER OF 1,3-BUTADIENE HAVING ABOUT 2 TERMINAL CARBOXY GROUPS PER MOLECULE WITH ABOUT 5 TO 25 PARTS OF A LESS VISCOUS SECOND POLYMER OF 1,3-BUTADIENE HAVING A SINGLE TERMINAL CARBOXY GROUP PER MOLECULE AND A VISCOSITY AT 77*F. IN THE RANGE OF ABOUT 10 TO 500 POISES AND CURING THE RESULTING MIXTURE BY REACTING THE CARBOXY GROUPS OF SAID FIRST AND SECOND POLYMERS WITH A TRIAZIRIDINYL PHOSPHINE COMPOUND.
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |