Quaternary ammonium carboxylate inner salt compositions as...

Details Quaternary ammonium carboxylate inner salt compositions as... Quaternary ammonium carboxylate inner salt compositions as...

C - Chemistry, Metallurgy

07

D

C07D 487/08 (2006.01) C08G 18/16 (2006.01) C08G 18/18 (2006.01) C08G 18/20 (2006.01)

Patent

CA 2112632

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 which comprises a quaternary ammonium carboxylate inner salt having the following formula I Image I where R1-R3 are independently C1-C12 alkyl, C5-C8 cycloalkyl or a heterocycle, C6-C10 aryl or heteroaromatic. R1 and R2 or R1-R3 together with the nitrogen atom can also be part of nitrogen containing ring system such as piperidine, morpholine, triethylenediamine, imidazole, or 1,8-diazabicyclo-[5.4.0]undec-7-ene. R4 is a divalent R1.

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