US4242467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urea derivatives and use as polyurethane catalysts
Assignee: Huntsman Corp
•
Filing: 1979-06-12
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Granted: 1980-12-30
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Expires: 1999-06-12
Abstract
Abstract Covers compounds of the formula: ##STR1## where R and R 1 , when taken individually are lower alkyl or when taken together represent ##STR2## z is an integer of 2-6 and X is O or N--R 2 where R 2 is lower alkyl. 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 in the presence of said catalyst.
Inventors
- 👤 Robert L. Zimmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:52
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/20; C08G18/2081; C08G18/2009
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
73 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 a compound falling within the following structural formula: ##STR11## where R and R 1 when taken individually are lower alkyl or when taken together represent ##STR12## z is an integer of 2-6 and X is O or N--R 2 where R 2 is lower alkyl.
Claim 2
Independent Claim
73 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 a compound falling within the following structural formula: ##STR11## where R and R 1 when taken individually are lower alkyl or when taken together represent ##STR12## z is an integer of 2-6 and X is O or N--R 2 where R 2 is lower alkyl.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein X is O and R and R 1 are lower alkyl.
Claim 4
Dependent Claim
16 words
The method of claim 2 wherein R and R 1 are methyl, and z is 3.
Claim 5
Dependent Claim
22 words
The method of claim 1 wherein R and R 1 are taken together and represent morpholino, and X is N--R 2 .
Claim 6
Dependent Claim
14 words
The method of claim 4 wherein R 2 is methyl and z is 3.
Claim 7
Dependent Claim
19 words
The method of claim 5 wherein R and R 1 are lower alkyl and X is N--R 2 .
Claim 8
Dependent Claim
14 words
The method of claim 6 wherein R 2 is methyl and z is 3.
Claim 9
Dependent Claim
96 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 catalyst, said organic polyisocyanate with a polyether polyol formed by the addition of polyhydric alcohol having a functionality of from 2 to about 4 with an alkylene oxide of 2 to 4 carbon atoms organic polyisocyanate being employed in an amount sufficient to provide 0.9 to 1.5 mole equivalents of isocyanate groups per mole equivalent of hydroxyl groups, said polyether polyol having a molecular weight from about 2,000 to about 7,000.
Claim 10
Dependent Claim
103 words
The method of claim 1 wherein a flexible polyester polyurethane foam is prepared which comprises reacting in the presence of a blowing agent, toluene diisocyanate with a hydroxyl terminated condensation product of a polycarboxylic acid and a polyhydric alcohol in the presence of said catalyst, said toluene diisocyanate being employed in an amount sufficient to provide 0.9 to 1.5 mole equivalents of isocyanate groups per mole equivalent of hydroxyl groups, said condensation product having a functionality of from about 2 to about 4, a molecular weight of from about 2,000 to about 6,000 and a hydroxyl number ranging from 25 to about 60.
References Cited (Backward Citations)
GB1169929A
Cited
US4143220A
Cited
US3928256A
Cited
US4011223A
Cited
US4012445A
Cited
US4105600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-30 | 1984-06-30 | 1984-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-30 | 1988-06-30 | 1988-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-30 | 1992-06-30 | 1992-12-30 | $7700.00 | Window Closed / Lapsed |