US3072582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyether-urethane foams and method of making same
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1959-04-01
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Granted: 1963-01-08
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Expires: 1979-04-01
Abstract
No abstract record available.
Inventors
- 👤 Frost Charles Bedell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:02
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/127; C08J9/14; C08J2203/00; C08J2203/14; C08J2203/142; C08J2375/00; C08J2375/04; C08J2375/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF MAKING A POLYETHER-URETHANE FOAM WHICH COMPRISES REACTING AN ESSENTIALLY HYDROXYL TERMINATED POLYETHER POLYOL WITH AN ORGANIC POLYISOCYANATE IN THE PRESENCE OF FROM ABOUT 2 TO 40% BY WEIGHT BASED ON THE TOTAL WEIGHT OF SAID POLYETHER-URETHANE FORMING MATERIAL OF AN INSERT, STABLE, VAPORIZABLE LIQUID HAVING A BOILING POINT BELOW ABOUT 110*C. AND BEING SELECTED FROM THE GROUP CONSISTING OF THE LOWER MOLECULAR WEIGHT ALKANES. ALKANES AND HALOGEN-SUBSTITUTED LOWER MOLECULAR WEIGHT ALKANES HAVING AT LEAST ONE SUBSTITUED FLUORINE ATOM AND AT A TEMPERATURE SUFFICIENT TO VAPORIZE SAID LIQUID AND TO FORM A FOAMED POLYETHERURETHANE PRODUCT.
Claim 2
Independent Claim
97 words
THE METHOD OF MAKING A POLYETHER-URETHANE FOAM WHICH COMPRISES REACTING AN ESSENTIALLY HYDROXYL TERMINATED POLYETHER POLYOL WITH AN ORGANIC POLYISOCYANATE IN THE PRESENCE OF FROM ABOUT 2 TO 40% BY WEIGHT BASED ON THE TOTAL WEIGHT OF SAID POLYETHER-URETHANE FORMING MATERIAL OF AN INSERT, STABLE, VAPORIZABLE LIQUID HAVING A BOILING POINT BELOW ABOUT 110*C. AND BEING SELECTED FROM THE GROUP CONSISTING OF THE LOWER MOLECULAR WEIGHT ALKANES. ALKANES AND HALOGEN-SUBSTITUTED LOWER MOLECULAR WEIGHT ALKANES HAVING AT LEAST ONE SUBSTITUED FLUORINE ATOM AND AT A TEMPERATURE SUFFICIENT TO VAPORIZE SAID LIQUID AND TO FORM A FOAMED POLYETHERURETHANE PRODUCT.
References Cited (Backward Citations)
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Cited
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Cited
US2848428A
Cited
US2830037A
Cited
US2850464A
Cited
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Cited
US2888409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |