Patent ID: 6723836
Filing Date: 2004-04-20
Classification: C08G

Abstract:
A process for reducing the aldehyde odor of a polyoxyalkylene polyol comprising adding a primary amine selected from the group of butyl amine, 1,2-dimethylbutyl amine, hexyl amine, isoamyl amine, 2-octyl amine, aminobutanol, 3-decyloxypropyl amine, 3-methoxypropyl amine, 3-isobutoxypropyl amine, 3-lauryloxypropyl amine, 3-myristyloxypropyl amine, lauryl amine, hexadecyl amine, stearyl amine, oleyl amine, polyoxypropylene amine, dimethylaminoethyl amine, ethylaminoethyl amine, diaminopropane, dibutylaminopropyl amine, 2-hydroxyethylaminopropyl amine, bis(3-aminopropyl)ether, diaminobutene, 1,9-nonane diamine, N-aminoethyl piperidine, N-aminopropyl morpholine, iminobispropyl amine, N,Nâ€²-bisaminopropyl-1,4-butylene diamine, and polyallyl amine to a polyoxyalkylene polyol having an acetoaldehyde or propionaldehyde odor, said polyoxyalkylene polyol being selected from the group of polypropylene polyol, polyoxyethylenepolyol and propylene oxide-ethylene oxide block copolymer, to form a mixture, and heating the resulting mixture to react the primary amine with the polyoxyalkylene polyol.