Cellular resins from arylene diisocyanates and polysulfide polymers and method of making same

Claim 1

A CELLULAR RUBBER-LIKE MATERIAL COMPRISING THE REACTION PRODUCT OF WATER WITH A FLUID POLYTHIOURETHANE PRODUCT FORMED BY CONDENSING AN ARYLENE DIISOCYANATE AND A LIQUID POLYSULFIDE POLYMER HAVING TERMINAL SULFHYDRYLL GROUPS AND HAVING A MOLECULAR WEIGHT OF FROM ABOUT 1000 TO ABOUT 4000 AND HAVING S PLURALITY OF INTERALINEAR POLYSULFIDE LINKAGES CONNECTING RECURRING UNITS SELECTED FROM THE GROUP CONSISTING OF ALKYLENE AND OXYALKYLENE UNITS, SAID POLYSULFIDE POLYMER BEING SELECTED FROM THE GROUP CONSISTING OF LINEAR POLYMERS AND POLYMERS CROSSLINKED TO THE EXTENT OF UP TO ABOUT 6%, SAID CROSS-LINKAGES BEING SELECTED FROM THE GROUP CONSISTING OF POLYSULFIDE CROSS-LINKAGES AND SULFHYDRYL GROUPS CAPABLE OF FORMING CROSS-LINKAGES, THE PROPORTIONS OF REACTANTS BEING SUCH THAT THE RATIO OF SULFHYDRYL GROUPS PRESENT IN THE POLYSULFIDE POLYMER TO ISOCYANATE GROUPS PRESENT IN THE ARYLENE DIISOCYANATE IS FROM 0.1:2 TO 0.4:2 AND THE AMOUNT OF WATER USED IS FROM ABOUT ONE TO ABOUT TWO TIMES THE AMOUNT WHICH IS EQUIVALENT TO THE UNREACTED ISOCYANATE GROUPS PRESENT IN THE SAID POLYTHIOURETHANE PRODUCT.