Patent ID: 6194485
Filing Date: 2001-02-27
Classification: C08J,C08K,C08L,C09J,H04M

Abstract:
A process for forming a dry sealant composition, comprising the steps of:a) adding at least one quinoid curing agent to a solubilizing organic polar solvent and forming a dissolved quinoid solution,b) adding said dissolved quinoid curing agent solution to a rubber blend during mixing of said rubber blend, and precipitating during mixing said curing agent in said blend so that a uniform fine dispersion of said curing agent is formed, andc) removing said polar solvent of said mixture to form the dry sealant component wherein the number average particle size of said dispersed quinoid curing agent is less than 10 microns, and wherein said rubber blend includes less than 10 wt % of nonpolar solvents when said quinoid curing agent is added.