Patent US4228248A successfully refreshed from Google Patents.
US4228248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Morpholine derivatives and use as polyurethane catalyst
Assignee: Huntsman Corp
•
Filing: 1979-02-12
•
Granted: 1980-10-14
•
Expires: 1999-02-12
Abstract
Abstract Covers a method of producing a polyurethane by utilizing specific morpholine compounds as a catalyst in reacting an organic polyisocyanate with an organic polyester polyol or polyether polyol in the presence of said catalyst. Said amines fall within the following structural formula: ##STR1## where R is lower alkyl and x=0-4.
Inventors
- 👤 Robert L. Zimmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:49
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/20; C08G18/2009; C08G18/2018
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
44 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 an amine falling within the following structural formula: ##STR3## where R is lower alkyl and X=0-4.
Claim 2
Independent Claim
44 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 an amine falling within the following structural formula: ##STR3## where R is lower alkyl and X=0-4.
Claim 3
Dependent Claim
101 words
The method of claim 1 wherein a flexible polyether polyurethane foam is provided which comprises reacting in the presence of a blowing agent 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 in the presence of said catalyst, 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
104 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 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.
Claim 5
Dependent Claim
11 words
The method of claim 1 wherein said catalyst is N-methoxyethoxyethyl morpholine.
Claim 6
Dependent Claim
11 words
The method of claim 1 wherein said catalyst is N-methoxyethyl morpholine.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-14 | 1984-04-14 | 1984-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-14 | 1988-04-14 | 1988-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-14 | 1992-04-14 | 1992-10-14 | $7700.00 | Window Closed / Lapsed |