Metal and metal compound catalysts for polyurethane plastics

Claim 1

IN THE PREPARATION OF A SUBSTANTIALLY NONPOROUS, RUBBER-LIKE POLYURETHANE PLASTIC BY A PROCESS WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE WITH AN ORGANIC COMPOUND HAVING REACTIVE HYDROGEN ATOMS, A MOLECULAR WEIGHT OF AT LEAST ABOUT 500, AN ACID NUMBER OF NOT MORE THAN ABOUT 2, AND A HYDROXYL NUMBER OF NOT MORE THAN ABOUT 224, SAID ORGANIC COMPOUND HAVING REACTIVE HYDROGENS BEING CAPABLE OF REACTING WITH SAID ORGANIC POLYISOCYANATE TO FORM A POLYURETHANE, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE REACTION BETWEEN THE SAID ORGANIC COMPOUND HAVING REACTIVE HYDROGENS AND THE ORGANIC POLYISOCYANATE IN THE PRESENCE OF A CATALYTIC AMOUNT OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF METALLIC GOLD, ZINC, CADMIUM, TITANIUM, ANTIMONY, BISMUTH, AUROCHLOROHYDRIC ACID, BISMUTH NITRATE, CADIMUM CHLORIDE, GOLD TRICHLORIDE, BISMUTH TRICHLORIDE, TITANIUM TETRABUTYLATE, ZINC ADIPATE, ANTIMONY OXIDE, DISALICYLAL ETHYLENE DIIMINE-TITANIUM HYDROXY CHLORIDE, AND ANTOMONIC ACID TRIETHYL ESTER.