Patent ID: 6261380
Filing Date: 2001-07-17
Classification: C09D,Y10T

Abstract:
A method of reusing a coated substrate comprising the steps of:(a) allowing the coated substrate, which carries deposits on its surface, to swell as a coated composition to which said deposits adhere, and(b) removing said deposits from said coated substrate to reuse the substrate which comprises a material substrate and a coating composition fixed to the surface of said material substrate, said coating composition comprising a crosslinked water swellable hydrophilic resin which is capable of swelling to a volume at least 1.5 times its initial volume, and is solid in air at ambient temperature and from which surface deposits are readily removable, such that said coated material substrate is reusable, and wherein the condition of said swellable hydrophilic resin is such that while said hydrophilic resin swells in the presence of water it is not washed away from said surface of said material substrate by said water when the deposits are readily removed with water.