US4115302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted morpholine catalyst for polyurethane foam
Assignee: Uniroyal Chemical Co Inc
•
Filing: 1977-07-13
•
Granted: 1978-09-19
•
Expires: 1997-07-13
Abstract
Abstract N-(1,1-dioxotetrahydro-3-thienyl)-2,6-dialkylmorpholines, useful as catalysts in making polyurethane foam.
Inventors
- 👤 Chung-Ling Mao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:59
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/20; C08G18/209
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
21 words
A compound of the formula ##STR3## wherein R 1 and R 2 are alkyl radicals having 1 to 4 carbon atoms.
Claim 2
Dependent Claim
21 words
A compound of the formula ##STR3## wherein R 1 and R 2 are alkyl radicals having 1 to 4 carbon atoms.
Claim 3
Dependent Claim
15 words
A compound as in claim 1 in which R 1 and R 2 are methyl.
Claim 4
Dependent Claim
71 words
In a method of making a polyurethane foam wherein a polyurethane-forming long chain polyol and a polyurethane-forming organic polyisocyanate are reacted in the presence of a catalyst and a blowing agent for the polyurethane foam, the improvement comprising using as the catalyst, at least in part, an effective amount of a compound of the formula ##STR4## wherein R 1 and R 2 are alkyl radicals having 1 to 4 carbon atoms.
Claim 5
Dependent Claim
71 words
In a method of making a polyurethane foam wherein a polyurethane-forming long chain polyol and a polyurethane-forming organic polyisocyanate are reacted in the presence of a catalyst and a blowing agent for the polyurethane foam, the improvement comprising using as the catalyst, at least in part, an effective amount of a compound of the formula ##STR4## wherein R 1 and R 2 are alkyl radicals having 1 to 4 carbon atoms.
Claim 6
Dependent Claim
15 words
A method as in claim 3, in which R 1 and R 2 are methyl.
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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) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |