US3042632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst composition and process of preparing polyurethane foam containing same
Assignee: Air Products and Chemicals Inc
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Filing: 1958-06-05
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Granted: 1962-07-03
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Expires: 1978-06-05
Abstract
No abstract record available.
Inventors
- 👤 William E Erner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:12
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/20; C08G18/2045; C08G18/2063; C08G18/1875
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
THE METHOD OF PREPARING A POLYURETHANE FOAM ARTICLE WHICH METHOD INCLUDES THE STEPS OF: DIIOLVING AN AQUEOUS SOLUTION IN A POLYETHER GLYCOL HAVING AN EQUIVALENT WEIGHT OF ABOUT 1000 PER FREE HYDROXYL GROUP TO PROVIDE A POLYOL MIXTURE, SAID AQUEOUS SOLUTION CONTAINING TRIETHYLENE DIAMINE IN A CONCENTRATION WITHIN THE RANGE FROM ABOUT 0.5 TO 2 MOLAR, AND SAID AQUEOUS SOLUTION CONTAINING TETRAALKYL AMMONIUM HYDROXIDE HAVING AN IONIZATION CONSTANT GREATER THAN 0.01 IN A MOLAR CONCENTRATION WITHIN THE RANGE FROM ABOUT 20% TO ABOUT 60% OF THE MOLAR CONCENTRATION OF THE TRIETHYLENE DIAMINE, AND DISPERSING THROUGHOUT SAID POLYOL MIXTURE FROM ABOUT 15 PARTS TO ABOUT 60 PARTS OF AN ORGANIC DIISOCYANATE PER 100 PARTS OF SAID POLYETHER GLYCOL, TO FORM A REACTION MIXTURE WHICH UNDERGOES A TRANSFORMATION TO A POLYURETHANE FOAM ARTICULE IN THE PRESENCE OF TEETRAALKYL AMMONIUM HYDROXIDE AND TRITHYLENE DIAMINE AS CO-CATALYSTS FOR SAID REACTION MIXTURE.
Claim 2
Independent Claim
147 words
THE METHOD OF PREPARING A POLYURETHANE FOAM ARTICLE WHICH METHOD INCLUDES THE STEPS OF: DIIOLVING AN AQUEOUS SOLUTION IN A POLYETHER GLYCOL HAVING AN EQUIVALENT WEIGHT OF ABOUT 1000 PER FREE HYDROXYL GROUP TO PROVIDE A POLYOL MIXTURE, SAID AQUEOUS SOLUTION CONTAINING TRIETHYLENE DIAMINE IN A CONCENTRATION WITHIN THE RANGE FROM ABOUT 0.5 TO 2 MOLAR, AND SAID AQUEOUS SOLUTION CONTAINING TETRAALKYL AMMONIUM HYDROXIDE HAVING AN IONIZATION CONSTANT GREATER THAN 0.01 IN A MOLAR CONCENTRATION WITHIN THE RANGE FROM ABOUT 20% TO ABOUT 60% OF THE MOLAR CONCENTRATION OF THE TRIETHYLENE DIAMINE, AND DISPERSING THROUGHOUT SAID POLYOL MIXTURE FROM ABOUT 15 PARTS TO ABOUT 60 PARTS OF AN ORGANIC DIISOCYANATE PER 100 PARTS OF SAID POLYETHER GLYCOL, TO FORM A REACTION MIXTURE WHICH UNDERGOES A TRANSFORMATION TO A POLYURETHANE FOAM ARTICULE IN THE PRESENCE OF TEETRAALKYL AMMONIUM HYDROXIDE AND TRITHYLENE DIAMINE AS CO-CATALYSTS FOR SAID REACTION MIXTURE.
References Cited (Backward Citations)
US2842506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |