Isocyanate-based elastomer and process for production thereof

Abstract From the Canadian patent

A process for producing an isocyanate-based elastomer comprising the steps of: providing a first mixture comprising a catalyst and a filler material, the surface of the filler material being at least partially surrounded by, the catalyst to form an available reactive site for polymerization; providing a, second mixture comprising an isocyanate and an active hydrogen-containing compound which are substantially unreacted; and contacting the first mixture and the second mixture to provide a reaction mixture; wherein said contacting causes substantially immediate reaction of the reaction mixture at the available, reaction site to produce the isocyanate-based elastomer. The filler material …