Process for the production of RSG elastomers from polyethers containing finite amines, a mixture of finite aromatic amine chain extenders, a substituted, acyclic aliphatic finite amine chain extender and an aromatic polyisocyanate.

摘要

The invention is reaction injection molded (RIM) elastomer comprising a cured reaction product of primary or secondary amine terminated polyethers of greater than 1500 molecular weight, an aromatic polyisocyanate, a combination of an unsubstituted aromatic diamine chain extender and a substituted acyclic aliphatic diamine chain extender. The invention is also a method of preparation of a RIM polyurea elastomer as described above.