Conductive polymeric coatings with positive temperature coefficients of resistivity

摘要

A conductive polymeric coating paste made by thoroughly mixing ingredients in a heated stirring vessel is composed of an aromatic solvent, a quantity "X" of free conductor powder, a substrate-forming elastomer, which contains no diene monomer, equal to 0.25X to 0.40X, by weight, and a paraffin equal to 0.25X to 0.40X, by weight, of said conductor powder.