Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-05-29
1977-09-20
Czaja, Donald E.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
252431R, 252438, 260 25AQ, 260 75VC, 260 775AC, 260 775MA, B01J 2724, B01J 3112, C08G 1818
Patent
active
040499316
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.
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Duffy Robert Donovan
Sandner Michael Ray
Czaja Donald E.
Fletcher H. H.
Klosty Marylin
Union Carbide Corporation
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