US2993869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular polyurethane elastomer and preparation of same using a morpholine catalyst
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1956-12-05
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Granted: 1961-07-25
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Expires: 1976-12-05
Abstract
No abstract record available.
Inventors
- 👤 George T Gmitter
- 👤 Edwin M Maxey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:35
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/22; C07D295/26; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/20; C08G18/2009; C08G18/2018; C08G18/2081; C08G18/209; C08J; C08J9/00; C08J9/36; C08J9/38; C08J2207/00; C08J2207/04; Y; Y10; Y10S; Y10S521/00; Y10S521/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN THE METHOD OF MAKING A POLYURETHANE FOAM MATERIAL IN WHICH (1) ABOUT ONE MOLE EQUIVALENT WEIGHT OF A HYDROXYL TERMINATED POLYOL HAVING A MOLECULAR WEIGHT OF AT LEAST 500 IN WHICH THE POLYOL IS SELECTED FROM THE GROUP CONSISTING OF POLYALKYLENE ETHER GLYCOLS AND POLYESTERS, SAID POLYESTER BEING THE REACTION PRODUCT OF A POLYCARBOXYLIC ACID AND A POLYRHYDRIC ALCOHOL, IS MIXED WITH (2) MORE THAN A MOLE EQUIVALENT WEIGHT OF AN ORGANIC DIISOCYANATE, AND (3) FROM ABOUT 0.5 TO 5 PARTS BY WEIGHT OF WATER BASED ON 100 PARTS BY WEIGHT OF SAID POLYOL AND SAID DIISOCYANATE TO FORM A CELLULAR SOLID POLYURETHANE, THE IMPROVEMENT WHICH COMPRISES REACTING THE DIISOCYANATE, POLYOL, AND WATER IN THE PRESENCE OF FROM ABOUT 0.05 TO 5 PARTS BY WEIGHT BASED ON THE WEIGHT OF SAID DIISOCYANATE AND POLYOL OF A CATALYST COMPOSITION COMPRISING A TERTIARY AMINE OF THE GENERAL FORMULA
Claim 2
Dependent Claim
147 words
IN THE METHOD OF MAKING A POLYURETHANE FOAM MATERIAL IN WHICH (1) ABOUT ONE MOLE EQUIVALENT WEIGHT OF A HYDROXYL TERMINATED POLYOL HAVING A MOLECULAR WEIGHT OF AT LEAST 500 IN WHICH THE POLYOL IS SELECTED FROM THE GROUP CONSISTING OF POLYALKYLENE ETHER GLYCOLS AND POLYESTERS, SAID POLYESTER BEING THE REACTION PRODUCT OF A POLYCARBOXYLIC ACID AND A POLYRHYDRIC ALCOHOL, IS MIXED WITH (2) MORE THAN A MOLE EQUIVALENT WEIGHT OF AN ORGANIC DIISOCYANATE, AND (3) FROM ABOUT 0.5 TO 5 PARTS BY WEIGHT OF WATER BASED ON 100 PARTS BY WEIGHT OF SAID POLYOL AND SAID DIISOCYANATE TO FORM A CELLULAR SOLID POLYURETHANE, THE IMPROVEMENT WHICH COMPRISES REACTING THE DIISOCYANATE, POLYOL, AND WATER IN THE PRESENCE OF FROM ABOUT 0.05 TO 5 PARTS BY WEIGHT BASED ON THE WEIGHT OF SAID DIISOCYANATE AND POLYOL OF A CATALYST COMPOSITION COMPRISING A TERTIARY AMINE OF THE GENERAL FORMULA
References Cited (Backward Citations)
US1045234A
Cited
US2779689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |