US4122038A
Expired / Lapsed
US
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Catalyst systems containing dimethylamino ether mono-ols for polyurethane foam formation
Assignee: OSI Specialties Inc
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Filing: 1977-07-27
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Granted: 1978-10-24
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Expires: 1997-07-27
Abstract
Abstract Cellular urethane polymers are provided by effecting the reaction of an organic polyol reactant comprising a polyether polyol and an organic polyisocyanate reactant in the presence of a blowing agent and a catalyst system comprising a tertiary-dimethylamino ether mono-ol. In the dimethylamino ether mono-ols employed as catalysts in the practice of the invention, the tertiary-dimethylamino group and the hydroxyl group are positioned beta to a common acyclic ether oxygen atom or to different acyclic ether oxygen atoms which in turn are positioned beta to one another. The said dimethylamino ether mono-ols are versatile, low odor catalysts and are useful in forming cellular urethane polymers ranging from all water-blown flexible polyether foam to all fluorocarbon-blown rigid foam including semi-flexible and high-resilience foam products. Especially preferred for use in the practice of the invention are 2-(2-dimethylaminoethoxy)ethanol and 2-[2-(2-dimethylaminoethoxy)ethoxy]ethanol either as such or in combination with other catalysts including other tertiary-amine components and/or organic compounds of tin. Also provided are blended catalyst systems comprising said dimethylamino ether mono-ols.
Inventors
- 👤 Michael Ray Sandner
- 👤 Robert Donovan Duffy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:19
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1825; C08G18/28; C08G18/2805; C08G18/285; C08G18/2875; C08G2110/00; C08G2110/0008; C08G2110/0016; C08G2110/0025; C08G2110/0083
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
179 words
A catalyst combination for cellular urethane formation which comprises: (1) a total of from about 10 to about 95 weight percent of at least one dimethylamino ether mono-ol having the formula, ##STR26## wherein n has an average value of at least one and no more than five, and each of R 1 , R 2 , R 3 and R 4 represents hydrogen, methyl or ethyl with the proviso that, R 1 and R 2 cumulatively, and R 3 and R 4 cumulatively, have no more than two carbon atoms; (2) a total of from about 5 to about 90 weight percent of at least one other tertiary-amine component selected from the group consisting of bis[2-(N,N-dimethylamino)ethyl]ether, 3-dimethylamino-N,N-dimethylpropionamide, 3-dimethylaminopropionitrile, triethylenediamine, N,N,N,',N'-tetramethyl-1,3-butanediamine and N,N-dimethylethanolamine; and (3) zero or up to 15 weight percent of an organic compound of tin selected from the group consisting of a stannous salt of a carboxylic acid, a dialkyltin dicarboxylate, a dialkyltin oxide, a trialkyltin oxide and a tin mercaptide; said weight percentages being based on the combined total weight of components (1), (2) and (3).
Claim 2
Dependent Claim
179 words
A catalyst combination for cellular urethane formation which comprises: (1) a total of from about 10 to about 95 weight percent of at least one dimethylamino ether mono-ol having the formula, ##STR26## wherein n has an average value of at least one and no more than five, and each of R 1 , R 2 , R 3 and R 4 represents hydrogen, methyl or ethyl with the proviso that, R 1 and R 2 cumulatively, and R 3 and R 4 cumulatively, have no more than two carbon atoms; (2) a total of from about 5 to about 90 weight percent of at least one other tertiary-amine component selected from the group consisting of bis[2-(N,N-dimethylamino)ethyl]ether, 3-dimethylamino-N,N-dimethylpropionamide, 3-dimethylaminopropionitrile, triethylenediamine, N,N,N,',N'-tetramethyl-1,3-butanediamine and N,N-dimethylethanolamine; and (3) zero or up to 15 weight percent of an organic compound of tin selected from the group consisting of a stannous salt of a carboxylic acid, a dialkyltin dicarboxylate, a dialkyltin oxide, a trialkyltin oxide and a tin mercaptide; said weight percentages being based on the combined total weight of components (1), (2) and (3).
Claim 3
Dependent Claim
13 words
A catalyst combination as defined in claim 1 wherein component (1) comprises 2-(2-dimethylaminoethoxy)ethanol.
Claim 4
Dependent Claim
13 words
A catalyst combination as defined in claim 1 wherein component (2) comprises bis[2-(N,N-dimethylamino)ethyl]ether.
Claim 5
Dependent Claim
13 words
A catalyst combination as defined in claim 1 wherein component (2) comprises 3-dimethylamino-N,N-dimethylpropionamide.
Claim 6
Dependent Claim
13 words
A catalyst combination as defined in claim 1 wherein component (2) comprises triethylenediamine.
Claim 7
Dependent Claim
37 words
A catalyst combination for cellular urethane formation which comprises: (1) a total of from 10 to about 95 weight percent of 2-(2-dimethylaminoethoxy)ethanol; and (2) a total of from about 5 to about 90 weight percent of bis[2-(N,N-dimethylamino)ethyl]ether.
Claim 8
Dependent Claim
37 words
A catalyst combination for cellular urethane formation which comprises: (1) a total of from 10 to about 95 weight percent of 2-(2-dimethylaminoethoxy)ethanol; and (2) a total of from about 5 to about 90 weight percent of bis[2-(N,N-dimethylamino)ethyl]ether.
Claim 9
Dependent Claim
95 words
A catalyst combination for cellular urethane formation which comprises: (1) a total of from about 40 to about 90 weight percent of 2-(2-dimethylaminoethoxy)ethanol; (2) a total of from about 10 to about 60 weight percent of 3-dimethylamino-N,N-dimethylpropionamide; and (3) from about 0.5 to about 10 weight percent of an organic compound of tin selected from the group consisting of a stannous salt of a carboxylic acid, a dialkyltin dicarboxylate, a dialkytin oxide, a trialkyltin oxide and a tin mercaptide; said weight percentages being based on the combined total weight of components (1), (2) and (3).
Claim 10
Dependent Claim
95 words
A catalyst combination for cellular urethane formation which comprises: (1) a total of from about 40 to about 90 weight percent of 2-(2-dimethylaminoethoxy)ethanol; (2) a total of from about 10 to about 60 weight percent of 3-dimethylamino-N,N-dimethylpropionamide; and (3) from about 0.5 to about 10 weight percent of an organic compound of tin selected from the group consisting of a stannous salt of a carboxylic acid, a dialkyltin dicarboxylate, a dialkytin oxide, a trialkyltin oxide and a tin mercaptide; said weight percentages being based on the combined total weight of components (1), (2) and (3).
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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) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |