Hydroxyl group-containing blowing catalyst compositions for the production of polyurethanes
AssigneeAir Products and Chemicals, Inc.
InventorsMark L. Listemann, Kevin R. Lassila, Kristen E. Minnich, Ann C. L. Savoca
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Abstract
A method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, cell stabilizer and a catalyst composition consisting essentially of at least one of the permethylated mono- and dialkylene oxide adducts of tris(2-aminoethyl)amine of structures I, II and III, or any combination thereof ##STR1## wherein R is hydrogen, a C.sub.1 -C.sub.4 alkyl, C.sub.6 -C.sub.8 aryl, or C.sub.7 -C.sub.9 aralkyl group.
Claims10
In a method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, cell stabilizer and a catalyst composition, the improvement which comprises employing a catalyst composition consisting essentially of at least one of the permethylated mono- and dialkylene oxide adducts of tris(2-aminoethyl)amine of structures I, II and III:
- ##STR10## wherein R is hydrogen or a C.sub.1 -C.sub.4 alkyl.
In a method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of water as a blowing agent, cell stabilizer and a catalyst composition, the improvement which comprises employing a catalyst composition consisting essentially of at least one of the permethylated mono- and dialkylene oxide adducts of tris(2-aminoethyl)amine of structures I, II and III:
- ##STR11##
Dependencies are inferred from the claim text.