Low odor amine catalysts for polyurethane flexible slabstock foams based on polyester polyols
AssigneeAir Products and Chemicals, Inc.
InventorsKrunoslav Muha, Steven P. Hulme, Mark E. Harakal
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Abstract
A method for preparing a polyester flexible slabstock polyurethane foam which comprises reacting an organic polyisocyanate and a polyester polyol in the presence of a blowing agent, optionally a cell stabilizer and a catalyst composition consisting essentially of N-methylimidazole or 1,2-dimethylimidazole, or both.
Claims12
In a method for preparing a flexible polyurethane slabstock foam which comprises reacting an organic polyisocyanate and a polyester polyol in the presence of a blowing agent, optionally a cell stabilizer, and a catalyst composition, the improvement for providing a flexible open-celled polyurethane slabstock foam which comprises employing a catalyst composition consisting essentially of N-methylimidazole or 1,2-dimethylimidazole, or both.
In a method for preparing a flexible polyurethane slabstock foam which comprises reacting toluenediisocyanate and a polyester polyol in the presence of water as a blowing agent, optionally a cell stabilizer, and a catalyst composition, the improvement for providing a flexible open-celled polyurethane slabstock foam which comprises employing a catalyst composition consisting essentially of N-methylimidazole or 1,2-dimethylimidazole, or both.
Dependencies are inferred from the claim text.