Patent ID: 7937023
Filing Date: 2011-05-03
Classification: C08G,C08K,C09D,Y10T

Abstract:
1. A method for coating an electrophotographic process element adapted to receive an image from a light source with the light image then being converted to an electric charge image with a conductive polyurethane undercoat layer; the method comprising: a) producing a coating solution comprising a dialkyl malonate capped isocyanate or polyisocyanate, a polyol, a monofunctional alcohol and at least one finely divided metal oxide or mixtures thereof; b) coating the substrate with the coating solution to produce a coated substrate; and, c) heating the coated substrate at a temperature up to about 140° C. wherein the at least one metal oxide is present in an amount equal to from about 40 to about 90 weight percent of solids in the polyurethane layer.