US3401145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polyurethane compositions
Assignee: Goodyear Tire and Rubber Co
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Filing: 1961-09-25
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Granted: 1968-09-10
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Expires: 1981-09-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas H Rogers
- 👤 Newell R Bender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:58
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A METHOD OF PREPARING A HEAT AND WEATHER RESISTANT POLYURETHANE ELASTOMER COMPRISING THE STEPS OF MIXING AND REACTING (1) ABOUT 0.5 MOL TO 12 MOLS OF AN ORGANIC DIISOCYANATE, (2) ABOUT ONE MOL OF A POLYALKYLENE EITHER POLYOL HAVING A MOLECULAR WEIGHT OF AT LEAST 500, AND (3) ABOUT 0.3 TO 5% BY WEIGHT BASED ON THE WEIGHT OF SAID POLYOL OF AN ANTIOXIDANT BEING A MIXTURE OBTAINED BY REACTING PHENOL WITH STYRENE WHERE THE CONCENTRATION OF STYRENE IS ABOUT 1 TO 2 MOLS FOR EACH MOL OF PHENOL.
Claim 2
Independent Claim
89 words
A METHOD OF PREPARING A HEAT AND WEATHER RESISTANT POLYURETHANE ELASTOMER COMPRISING THE STEPS OF MIXING AND REACTING (1) ABOUT 0.5 MOL TO 12 MOLS OF AN ORGANIC DIISOCYANATE, (2) ABOUT ONE MOL OF A POLYALKYLENE EITHER POLYOL HAVING A MOLECULAR WEIGHT OF AT LEAST 500, AND (3) ABOUT 0.3 TO 5% BY WEIGHT BASED ON THE WEIGHT OF SAID POLYOL OF AN ANTIOXIDANT BEING A MIXTURE OBTAINED BY REACTING PHENOL WITH STYRENE WHERE THE CONCENTRATION OF STYRENE IS ABOUT 1 TO 2 MOLS FOR EACH MOL OF PHENOL.
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) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |