PROCESS FOR THE PREPARATION OF HEAT-STABLE POLYURETHANE UREA ELASTOMERS

摘要

Mo3486 LeA 27,352 A PROCESS FOR THE PREPARATION OF HEAT-STABLE POLYURETHANE UREA ELASTOMERS This invention relates to a process for preparing polyurethane urea elastomers by reacting (a) compounds containing at least two isocyanate-reactive groups and having a molecular weight in the range from about 400 to about 10,000; (b) polyisocyanates; and (c) aromatic diamines corresponding to the formula wherein R1 and R2 are independently hydrogen or alkyl.