| abstract |
ISOCYANATE-TERMINATED POLYURETHAN PREPOLYMERS, SUCH AS THOSE BASED ON POLY(OXYPROPYLENE) TRIOLS, ARE REACTED WITH CERTAIN ACTIVE HYDROGEN-CONTAINING ETHYLENE UREA DERIVATIVES, SUCH AS N-HYDROXYALKYL OR N-AMINOALKYL DERIVATIVES, TO PRODUCE CORRESPONDING ETHYLENEUREATERMINATED PREPOLYMERS, WHICH CAN BE CROSSLINKED, FOR EXAMPLE, WITH LATEN CROSSLINKING AGENTS, SUCH AS BIS (ALKOXYALKYL) ETHYLENEUREA, AND AN ACID CATALYST TO PROVIDE CURED OR CROSSLINKED POLYURETHANE-LIKE MATERIALS USEFUL AS COATINGS AND ADHESIVES. |