摘要:
A single-package curable polyurethane resin composition containing a polyisocyanate which may or may not be blocked and as a curing agent a condensation product obtained by reacting, with removal of an equimolecular proportion of water, approximately equimolecular proportions of diethylenetriamine or triethylenetetramine with phthalic or hexahydrophthalic anhydride, maleic anhydride or succinic anhydride. Epoxy resin may also be present in the composition.
摘要:
A CONDENSATION PRODUCT, WITH AN EPIHALOHYDRIN, OF A POLYALKYLENE POLYAMINE HAVING THE COMPSITION
NH2-(A-NH)A-H
IN WHICH A REPRESENTS A STRAIGHT CHAIN ALKYLENE GROUP HAVING 4 TO 8 CARBON ATOMS AND N IS A NUMBER FROM 2 TO 6 AND A SECOND AMINO COMPOUND SELECTED FROM THE CLASS CONSISTING OF AMMONIA; HYDRAZINE; AND THE POLYETHYLENE POLYAMINES, POLYPROPYLENE POLYAMINES, ALKANOLAMINES, AND ETHYLAMINE ALKANOLAMNES HAVING AT LEAST TWO HYDROGEN ATOMS ATTACHED TO AMINO NITROGEN, HAVING A MISCIBILITY WITH WATER OF AT LEAST 20% BY WEIGHT OF AMINO COMPOUND AND HAVING A PKA AT 25*C. OF AT LEAST ABOUT 9.0.