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Patent US4194069A successfully refreshed from Google Patents.
US4194069A
Expired / Lapsed
US
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Urea derivative and use as polyurethane catalyst
Assignee: Huntsman Corp
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Filing: 1978-10-16
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Granted: 1980-03-18
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Expires: 1998-10-16
Abstract
Abstract Covers N-(3-dimethylaminopropyl)-N'-(3-morpholinopropyl)urea. Also covers a method of producing a polyurethane by utilizing said above compound as a catalyst in reacting an organic polyisocyanate with an organic polyester polyol or polyether polyol in the presence of said catalyst.
Inventors
- 👤 George P. Speranza
- 👤 Robert L. Zimmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:29
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/166; C08G18/168; C08G18/18; C08G18/20; C08G18/2009; C08G18/2018
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
29 words
A method for producing a polyurethane which comprises reacting an organic polyisocyanate with an organic polyester polyol or polyether polyol in the presence of a catalytic amount of N-(3-dimethylaminopropyl)-N'-(3-morpholinopropyl)urea.
Claim 2
Independent Claim
29 words
A method for producing a polyurethane which comprises reacting an organic polyisocyanate with an organic polyester polyol or polyether polyol in the presence of a catalytic amount of N-(3-dimethylaminopropyl)-N'-(3-morpholinopropyl)urea.
Claim 3
Dependent Claim
99 words
The method of claim 1 wherein a flexible polyether polyurethane foam is provided which comprises reacting in the presence of a blowing agent and said urea catalyst said organic polyisocyanate with a polyether polyol formed by the addition of a polyhydric alcohol having a functionality of from 2 to about 4 with an alkylene oxide of 2 to 4 carbon atoms, said organic polyisocyanate being employed in an amount sufficient to provide 0.4 to 1.5 mol equivalents of isocyanate groups per mol equivalent of hydroxyl groups, said polyether polyol having a molecular weight within the range of about 2000-7000.
Claim 4
Dependent Claim
102 words
The method of claim 1 wherein a flexible polyester polyurethane foam is prepared which comprises reacting in the presence of a blowing agent and said urea catalyst, toluene diisocyanate with a hydroxyl terminated condensation product of a polycarboxylic acid and a polyhydric alcohol, said toluene diisocyanate being employed in an amount sufficient to provide 1.0 to 1.5 mol equivalents of isocyanate groups per mol equivalent of hydroxyl groups, said condensation product having a functionality of from about 2 to about 4, and a molecular weight from about 2,000 to about 6,000 and a hydroxyl number ranging from about 25 to about 60.
References Cited (Backward Citations)
US3234153A
Cited
US4012445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-18 | 1983-09-17 | 1984-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-18 | 1987-09-17 | 1988-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-18 | 1991-09-17 | 1992-03-18 | $7700.00 | Window Closed / Lapsed |