Patent US4450246A successfully refreshed from Google Patents.
US4450246A
Expired / Lapsed
US
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Novel polyurethane catalysts in polyurethane foam process
Assignee: WR Grace and Co Conn
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Filing: 1982-10-26
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Granted: 1984-05-22
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Expires: 2002-10-26
Abstract
Abstract A process for producing a polyurethane foam by reacting an organic polyisocyanate with an organic polyester polyol or polyether polyol in the presence of a catalytic amount of specific amine compounds of the formula: <IMAGE> or <IMAGE> wherein R1 is a methyl or ethyl and R2 is hydrogen or methyl such that when R1 is methyl, R2 is methyl and when R1 is ethyl, R2 is hydrogen, X is an organic mono or dicarboxylic acid and n is an integer from 0 to 1.
Inventors
- 👤 Felek Jachimowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:32
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1875; C08G18/20; C08G18/2009; C08G18/2018
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
100 words
A process for forming a polyurethane comprising reacting an organic polyisocyanate with a polyol selected from an organic polyether polyol or polyester polyol in the presence of a catalytic amount of an amine selected from the group having the structural formula: ##STR3## wherein R 1 is a methyl or ethyl group and R 2 is a hydrogen or methyl group such that when R 1 is methyl, R 2 is methyl and when R 1 is ethyl, R 2 is hydrogen, X is an organic mono or dicarboxylic acid and n is a number from 0 to up to 1.
Claim 2
Dependent Claim
100 words
A process for forming a polyurethane comprising reacting an organic polyisocyanate with a polyol selected from an organic polyether polyol or polyester polyol in the presence of a catalytic amount of an amine selected from the group having the structural formula: ##STR3## wherein R 1 is a methyl or ethyl group and R 2 is a hydrogen or methyl group such that when R 1 is methyl, R 2 is methyl and when R 1 is ethyl, R 2 is hydrogen, X is an organic mono or dicarboxylic acid and n is a number from 0 to up to 1.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein R 1 and R 2 are each methyl and n is 0.
Claim 4
Dependent Claim
22 words
The process of claim 1 wherein R 1 and R 2 are each methyl and n is a number up to 1.
Claim 5
Dependent Claim
22 words
The process of claim 3 wherein X is selected from formic acid, adipic acid, fumaric acid, 2-ethyl hexanoic acid and mixtures thereof.
Claim 6
Dependent Claim
18 words
The process of claim 1 wherein R 1 is ethyl, R 2 is hydrogen and n is 0.
Claim 7
Dependent Claim
22 words
The process of claim 1 wherein R 1 is ethyl, R 2 is hydrogen and n is a number up to 1.
Claim 8
Dependent Claim
22 words
The process of claim 6 wherein X is selected from formic acid, adipic acid, fumaric acid, 2-ethyl hexanoic acid and mixtures thereof.
Claim 9
Dependent Claim
26 words
The process of claim 1 wherein the catalyst is present in from about 0.05 to 5 percent by weight based on the weight of polyol present.
Claim 10
Dependent Claim
26 words
The process of claim 2 wherein the catalyst is present in from about 0.05 to 5 percent by weight based on the weight of polyol present.
Claim 11
Dependent Claim
26 words
The process of claim 4 wherein the catalyst is present in from about 0.05 to 5 percent by weight based on the weight of polyol present.
Claim 12
Dependent Claim
26 words
The process of claim 5 wherein the catalyst is present in from about 0.05 to 5 percent by weight based on the weight of polyol present.
Claim 13
Dependent Claim
26 words
The process of claim 7 wherein the catalyst is present in from about 0.05 to 5 percent by weight based on the weight of polyol present.
Claim 14
Dependent Claim
28 words
The process of claim 1 wherein the reaction is carried out in the presence of from 0.5 to 50 weight percent blowing agent based on weight of polyol.
Claim 15
Dependent Claim
28 words
The process of claim 2 wherein the reaction is carried out in the presence of from 0.5 to 50 weight percent blowing agent based on weight of polyol.
Claim 16
Dependent Claim
28 words
The process of claim 3 wherein the reaction is carried out in the presence of from 0.5 to 50 weight percent blowing agent based on weight of polyol.
Claim 17
Dependent Claim
28 words
The process of claim 5 wherein the reaction is carried out in the presence of from 0.5 to 50 weight percent blowing agent based on weight of polyol.
Claim 18
Dependent Claim
28 words
The process of claim 6 wherein the reaction is carried out in the presence of from 0.5 to 50 weight percent blowing agent based on weight of polyol.
Claim 19
Dependent Claim
26 words
The process of claim 3 wherein said reaction of polyol and polyisocyanate is carried out in a reaction zone suitable for forming a flat-top bun product.
Claim 20
Dependent Claim
26 words
The process of claim 6 wherein said reaction of polyol and polyisocyanate is carried out in a reaction zone suitable for forming a flat-top bun product.
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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) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |