专利名称：Process for the preparation of heat-stable
polyurethane urea elastomers
发明人：Gerhard Grogler,Urs Thiery,Andreas
Ruckes,Richard Kopp,Heinrich Hess
申请号：US07/620986申请日：19901130公开号：US050875A公开日：19911112
摘要：This invention relates to a process for preparing polyurethane urea elastomersby reacting (a) compounds containing at least two isocyanate- reactive groups and havinga molecular weight in the range from about 400 to about 10,000; (b) polyisocyanates; and(c) aromatic diamines corresponding to the formula ##STR1## wherein R.sup.1 and R.sup.2 are independently hydrogen or alkyl.
申请人：BAYER AKTIENGESELLSCHAFT
代理人：Joseph C. Gil,Richard E. L. Henderson
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