Method for producing reaction injection molded elastomers from amine terminated polyethers, a blend of an aromatic amine terminated chain extender, a substituted acyclic aliphatic amine terminated 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.