Rubber-like copolymers and processes

Claim 1

THE PROCESS FOR PRODUCING A TOUGH, RUBBER-LIKE MATERIAL WHICH COMPRISES REACTING A DIISOCYANATE FROM THE GROUP CONSISTING OF THE C3 TO C10 POLYMETHYLENE DIISOCYANATES, THE C5 TO C6 CYCLOALKANE DIISOCYANATES, THE PHENYLENE DIISOCYANATES, SAID DIISOCYANATES ALL BEING CHARACTERIZED BY CONTAINING TWO ISOCYANATE SUBSTITUTED CARBON ATOMS SEPARATED BY AT LEAST ONE UNSUBSTITUTED CARBON ATOM, M-TOLUENE DIISOCYANATE, 3,3''BITOLUENE-4,4''DIISOCYANATE AND METHYLENE DIPHENYL-4,4''DIISOCYANATE, WITH A COPOLYESTER OF 4,4''-DICARBOXYDIPHENYLSULFONE AND AT LEAST ONE POLYMETHYLENE DICARBOXYLIC ACID CONTAINING 2 TO 8 METHYLENE GROUPS WITH AT LEAST ONE DIOL FROM THE GROUP CONSISTING OF THE POLYMETHYLENE GLYCOLS CONTAINING 2 TO 10 METHYLENE GROUPS AND THE POLYMETHYLENE GLYCOL ETHERS CONTAINING 2 TO 8 METHYLENE GROUPS AND 1 TO 3 ETHER OXYGEN ATOMS IN A HETERO-CHAIN STRUCTURE, WHICH COPOLYESTER IS CHARACTERIZED BY HAVING AN OH NUMBER OF 27 TO 7, SUBSTANTIALLY ALL ITS TERMINAL GROUPS BEING HYDROXY RADICALS, AND BY CONTAINING ABOUT 0.1 TO 0.7 4,4''-DICARBOXYDIPHENYLSULFONE UNITS FOR EVERY 1 ALKANE DICARBOXYLIC ACID UNIT, BY MIXING WITH SAID COPOLYESTER MORE THAN 1 GRAM MOL OF SAID DIISOCYANATE FOR EVERY 2 GRAM MOL RADICALS OF OH CONTAINED IN THE COPOLYESTER, INCORPORATING WITH THE RESULTING DIISOCYANATE-TREATED COPOLYESTER, A POLYFUNCTIONAL CROSS-LINKING AGENT CONTAINING AT LEAST 2 ACTIVE HYDROGEN ATOMS FROM THE GROUP CONSISTING OF WATER, THE POLYHYDROXY ALKANES, PRIMARY AND SECONDARY ALKANE POLYAMINES, AND THE HYDROXY ALKANE AMINES, AND MAINTAINING THE MIXTURE OF CROSS-LINKING AGENT AND DIISOCYANATE-TREATED COPOLYESTER AT REACTION TEMPERATURES BELOW THOSE AT WHICH THE POLYMER DECOMPOSES UNTIL SAID TOUGH, RUBBER-LIKE MATERIAL IS FORMED.