Patent US3062772A successfully refreshed from Google Patents.
US3062772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-scorching polyurethane compositions and method of making same
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1957-06-05
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Granted: 1962-11-06
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Expires: 1977-06-05
Abstract
No abstract record available.
Inventors
- 👤 Orin C Keplinger
- 👤 Otto C Elmer
- 👤 Joe S Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:09
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/83; C08G18/86; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7614
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A COMPOSITION COMPRISING (I) A POLYURETHANE OF (1) ONE MOLE OF AT LEAST ONE POLYOL HAVING TERMINAL HYDROXY GROUPS AND HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 500 AND BEING SELECTED FROM THE GROUP CONSISTING OF (A) A POLYESTER CONTAINING ESTER LINKAGES BETWEEN CHAINS OF CARBON ATOMS, HAVING AN ACID NUMBER OF LESS THAN 60, CONSISTING ESSENTIALLY OF CARBON, HYDROGEN AND OXYGEN AND BEING THE REACTION PRODUCT OF AN ORGANIC POLYCARBOXYLIC ACID AND AN ORGANIC POLYHYDRIC ALCOHOL, AND (B) A POLY (ALKYLENE ETHER) POLYOL CONTAINING ETHER OXYGEN ATOMS BETWEEN CHAINS OF CARBON ATOMS, AND CONSISTING ESSENTIALLY OF CARBON, HYDROGEN AND OXYGEN, SAID POLYOLS (A) AND (B) EACH BEING FREE OF EPOXY GROUPS AND OF VINYL ALCOHOL GROUPS, AND (2) FROM ABOUT 0.95 TO 1.50 TOTAL MOLES OF A MIXTURE OF AT LEAST TWO DIFFERENT ORGANIC POLYISOCYANATES HAVING TWO READILY REACTIVE ISOCYANATO GROUPS, AT LEAST 0.02 MOLE OF THE TOTAL MOLES OF SAID POLYISOCYANATE MIXTURE BEING A TETRA SUBSTITUTED DIISOCYANATE HAVING THE FORMULA
Claim 2
Dependent Claim
163 words
A COMPOSITION COMPRISING (I) A POLYURETHANE OF (1) ONE MOLE OF AT LEAST ONE POLYOL HAVING TERMINAL HYDROXY GROUPS AND HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 500 AND BEING SELECTED FROM THE GROUP CONSISTING OF (A) A POLYESTER CONTAINING ESTER LINKAGES BETWEEN CHAINS OF CARBON ATOMS, HAVING AN ACID NUMBER OF LESS THAN 60, CONSISTING ESSENTIALLY OF CARBON, HYDROGEN AND OXYGEN AND BEING THE REACTION PRODUCT OF AN ORGANIC POLYCARBOXYLIC ACID AND AN ORGANIC POLYHYDRIC ALCOHOL, AND (B) A POLY (ALKYLENE ETHER) POLYOL CONTAINING ETHER OXYGEN ATOMS BETWEEN CHAINS OF CARBON ATOMS, AND CONSISTING ESSENTIALLY OF CARBON, HYDROGEN AND OXYGEN, SAID POLYOLS (A) AND (B) EACH BEING FREE OF EPOXY GROUPS AND OF VINYL ALCOHOL GROUPS, AND (2) FROM ABOUT 0.95 TO 1.50 TOTAL MOLES OF A MIXTURE OF AT LEAST TWO DIFFERENT ORGANIC POLYISOCYANATES HAVING TWO READILY REACTIVE ISOCYANATO GROUPS, AT LEAST 0.02 MOLE OF THE TOTAL MOLES OF SAID POLYISOCYANATE MIXTURE BEING A TETRA SUBSTITUTED DIISOCYANATE HAVING THE FORMULA
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) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |