| abstract |
D R A W I N G PROCESS WHICH INVOLVES REACTING UNSATURATED DIESTER DIISOCYANATES AS EXEMPLIFIED BY BIS(2-ISOCYANATOETHYL) FUMARATE WITH ACTIVE HYDROGEN COMPOUNDS, E.G., POLYOLS, POLYAMINES, ETC. THE RESULTING PRODUCTS ARE USEFUL IN THE PREPARATION OF "BLOCKED" DIISOCYANATES, PREPOLYMERS, CAST AND THERMOPLASTIC POLYURETHANE RESINS, URETHANE FOAMS, REINFORCED PLASTIC PRODUCTS, ELASTIC FIBERS, AND OTHERS. |