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US 4,137,265 AGranted
Water-insoluble nitrogen-containing polyols
AssigneeTexaco Development Corporation
InventorsGayle D. Edwards, Doris M. Rice, Robert L. Soulen
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Abstract
A group of water-insoluble nitrogen-containing polyols is provided which are capable of self-catalyzed reaction with organic polyisocyanates to form rigid polyurethane foams of excellent dimensional strength. The polyols of this group are prepared by reacting from 2 to 3 mols of propylene oxide with one mol of the Mannich reaction product of a mol of phenol or nonylphenol with one or two mols of diethanolamine.
Claims1
A water-insoluble polyol having the property of self-catalyzing reaction with organic polyisocyanates to form rigid polyurethane foam said polyol having the formula ##STR4##
Dependencies are inferred from the claim text.