Stable intermediate reaction products

Claim 1

IN THE PREPARATION OF ELASTOMERIC POLYMERIC PRODUCTS FROM THE REACTION OF AN ORGANIC DIISOCYANATE, A MATERIAL HAVING A MOLECULAR WEIGHT OF AT LEAST 750 AND SELECTED FROM THE GROUP CONSISTING OF POLYALKYLENEETHER GLYCOLS AND POLYESTER GLYCOLS PREPARED FROM GLYCOLS AND DICARBOXYLIC ACIDS, AND A CHAIN-EXTENDING AGENT HAVING A PLURALITY OF ACTIVE HYDROGEN ATOMS WHICH ARE REACTIVE WITH AN ISOCYANATE GROUP, THERE BEING NO MORE THAN TWO ATOMS IN SAID CHAIN-EXTENDING AGENT HAVING ACTIVE HYDROGEN ATTACHED THERETO, SAID CHAIN-EXTENDING AGENT BEING SELECTED FROM THE GROUP CONSISTING OF WATER, HYDROGEN SULFIDE AND ORGANIC COMPOUNDS CONTAINING TWO ACTIVE HYDROGEN-CONTAINING GROUPS IN THE MOLECULE; THE PROCESS OF STABILIZING AN UNCURED POLYMER FROM SAID REACTION AGAINST PREMATURE EURING, SAID UNCURED POLYMER CONTAINING UNREACTED ISOCYANATE GROUPS, WHICH COMPRISES INCORPORATING WITH SAID UNCURED POLMER AFTER IT HAS REACHED A CONDITION OF HIGH VISOCITY BUT WHILE IT IS STILL WORKABLE ON A RUBBER MILL TO FROM A SMOOTH BAND, ENOUGH OF A NITGROGEN BASE HAVING A BASIC IONIZATION CONSTANT OF AT LEAST 1 X 10-12 AND CONTAINING A SINGLE NITROGEN ATOM HAVING HYDROGEN ATTACHED THERETO, TO PROVIDE AT LEAST ONE SUCH NITROGEN ATOM FOR EACH UNREACTED ISOCYANATE GROUP IN SAID UNCURED POLYMER, SAID NITROGEN ATOM BEING THE SOLE ATOM IN SAID NITROGEN BASE HAVING HYDROGEN ATTACHED THERETO WHICH IS REACTABLE WITH AN ISCOYANATE GROUP.