US3097176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of elastomeric cellular polyurethane
Assignee: Goodyear Tire and Rubber Co
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Filing: 1957-01-22
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Granted: 1963-07-09
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Expires: 1977-01-22
Abstract
No abstract record available.
Inventors
- 👤 Newell R Bender
- 👤 Broeck Theodore R Ten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:01
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08J2375/00; C08J2375/04; C08J2375/08; C08J2483/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A METHOD FOR PREPARING FLEXIBLE ELASTOMERIC CELLULAR MATERIALS WHICH COMPRISES HEATING A POLYPROPYLENE ETHER GLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT OF FROM 1500 TO 3200 WITH FROM 3.0 TO 6.0 MOLS OF AN ORGANIC POLYISOCYANATE PER MOL OF SAID GLYCOL TO PRODUCE A PREPOLYMER HAVING A VISCOSITY AT ROOM TEMPERATUE OF FROM 2,000 TO 50,000 CENTIPOISES, ADDING TO AND MIXING WITH 100 PARTS BY WEIGHT OF SAID PREPOLYMER (A) FROM 0.7 TO 6.5 PARTS BY WEIGHT OF WATER (B) FROM 0.1 TO 3.0 PARTS BY WEIGHT OF A TERTIARY AMINE AND (C) FROM 0.25 TO 1.5 PARTS BY WEIGHT OF SILICONE OIL AND PERMITTING THE COMPLETE REACTION MIXTURE TO EXPAND AND CURE, SAID SILICONE OIL BENG DEFINED BY THE FORMULA
Claim 2
Independent Claim
120 words
A METHOD FOR PREPARING FLEXIBLE ELASTOMERIC CELLULAR MATERIALS WHICH COMPRISES HEATING A POLYPROPYLENE ETHER GLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT OF FROM 1500 TO 3200 WITH FROM 3.0 TO 6.0 MOLS OF AN ORGANIC POLYISOCYANATE PER MOL OF SAID GLYCOL TO PRODUCE A PREPOLYMER HAVING A VISCOSITY AT ROOM TEMPERATUE OF FROM 2,000 TO 50,000 CENTIPOISES, ADDING TO AND MIXING WITH 100 PARTS BY WEIGHT OF SAID PREPOLYMER (A) FROM 0.7 TO 6.5 PARTS BY WEIGHT OF WATER (B) FROM 0.1 TO 3.0 PARTS BY WEIGHT OF A TERTIARY AMINE AND (C) FROM 0.25 TO 1.5 PARTS BY WEIGHT OF SILICONE OIL AND PERMITTING THE COMPLETE REACTION MIXTURE TO EXPAND AND CURE, SAID SILICONE OIL BENG DEFINED BY THE FORMULA
References Cited (Backward Citations)
US2764565A
Cited
US2993013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |