Process for catalyzing polyurethane foam formation using N,N-dim

Details Process for catalyzing polyurethane foam formation using N,N-dim Process for catalyzing polyurethane foam formation using N,N-dim

1976-06-24

1977-07-05

Rzucidlo, Eugene C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25AB, 260 75NB, 260 75NC, 260 775AB, 260 775AC, C08G 1814

Patent

active

040339114

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 an N,N-dimethylaminoalkoxypropionitrile. The said N,N-dimethylaminoalkoxypropionitriles 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 products. Especially preferred for use in the practice of the invention are 3-(2-dimethylaminoethoxy)propionitrile and 3-[2-(2-dimethylaminoethoxy)ethoxy]propionitrile 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 dimethylaminoalkoxypropionitriles.

REFERENCES:
patent: 2941967 (1960-06-01), Moller et al.
patent: 3330782 (1967-07-01), Poppelsdorf
patent: 3478096 (1969-11-01), Ayba
patent: 3660319 (1972-05-01), Yeakey
patent: 3925268 (1975-12-01), Rosemund et al.

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