US3036020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making cellular polyurethane using n, n-dialkyl-3-(dialkyl amino) propylamine catalyst
Assignee: Bayer Corp
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Filing: 1958-06-30
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Granted: 1962-05-22
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Expires: 1978-06-30
Abstract
No abstract record available.
Inventors
- 👤 J W Britain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:01
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1808
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A METHOD FOR MAKING A CELLULAR POLYURETHANE PLASTIC BY A PROCESS WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE WITH WATER AND AN ORGANIC COMPOUND HAVING A PLURALITY OF HYDROGEN ATOMS REACTIVE WITH AN -NCO GROUP, SAID ORGANIC COMPOUND BEING CAPABLE OF FORMING A POLYURETHANE BY REACTION WITH AN ORGANIC POLYISOCYANATE AND HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 500, AN HYDROXYL NUMBER OF NOT MORE THAN ABOUT 225 AND AN ACID NUMBER OF NOT MORE THAN ABOUT 2, THE IMPROVEMENT WHICH COMPRISES BRINGING ABOUT THE SAID REACTION IN THE PRESENCE OF A CATALYTIC AMOUNT OF A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
101 words
IN A METHOD FOR MAKING A CELLULAR POLYURETHANE PLASTIC BY A PROCESS WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE WITH WATER AND AN ORGANIC COMPOUND HAVING A PLURALITY OF HYDROGEN ATOMS REACTIVE WITH AN -NCO GROUP, SAID ORGANIC COMPOUND BEING CAPABLE OF FORMING A POLYURETHANE BY REACTION WITH AN ORGANIC POLYISOCYANATE AND HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 500, AN HYDROXYL NUMBER OF NOT MORE THAN ABOUT 225 AND AN ACID NUMBER OF NOT MORE THAN ABOUT 2, THE IMPROVEMENT WHICH COMPRISES BRINGING ABOUT THE SAID REACTION IN THE PRESENCE OF A CATALYTIC AMOUNT OF A COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |