Method of preparing polyurethane foams using imidazolines as catalysts
AssigneeAngus Chemical Company
InventorPaul E. Eckler
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Abstract
A method of catalyzing the curing of polyurethane foams formed by reacting a polyol with a diisocyanate in the presence of a blowing agent and a catalyst comprising using as the catalyst a compound of the formula ##STR1## where R can be hydrogen, methyl, ethyl or R.sup.4 CO.sub.2 CH.sub.2 --; R.sup.1 can be hydrogen, methyl, ethyl or R.sup.4 CO.sub.2 CH.sub.2 --; R.sup.2 can be hydrogen or an alkyl group of 1-3 carbon atoms; R.sup.3 can be alkyl of 1-4 carbon atoms or phenyl; and R.sup.4 can be hydrogen, alkyl or alkenyl of 1-17 carbon atoms.
Claims4
A method of catalyzing the curing of polyurethane foams formed by reacting a polyol with a diisocyanate in the presence of a blowing agent and a catalyst comprising using as the catalyst a compound of the formula ##STR4## where R can be hydrogen, methyl, ethyl or R.sup.4 CO.sub.2 CH.sub.2 --;
- R.sup.1 can be hydrogen, methyl, ethyl or R.sup.4 CO.sub.2 CH.sub.2 --;
- R.sup.2 can be hydrogen or an alkyl group of 1-3 carbon atoms;
- R.sup.3 can be alkyl of 1-4 carbon atoms or phenyl, and R.sup.4 can be hydrogen, alkyl or alkenyl of 1-17 carbon atoms.
Dependencies are inferred from the claim text.