| http://www.w3.org/ns/prov#value | - The invention also encompasses the polyurethanes and polyurea so produced.In another aspect, the invention is a composition of matter comprising (1) a relatively high equivalent weight polyfunctional active hydrogen compound and (2) a chain extender selected from the group consisting of: (a) heterocyclic diamineshaving at least one ring nitrogen; (b) polysubstituted alkyl diamines having at least
|
