Patent ID: 6436617
Filing Date: 2002-08-20
Classification: G03C,Y10S

Abstract:
A photographic element having a nascent water-resistant protective overcoat thereon, comprising the following:(a) a support; (b) at least one silver-halide emulsion layer superposed on a side of said support; and (c) overlying the silver emulsion layer, a processing-solution-permeable overcoat having a laydown of at least 0.54 g/m2 (50 mg/ft2) of a coating composition comprising (i) water-dispersible latex particles having an average particle size of from 0.01 to 0.5 microns and a Tg of greater than 20Â° C., which particles comprise an epoxy material, having on average at least 1.5 epoxy groups per molecule, and a thermoplastic acid polymer having an acid number between 30 and 250, wherein the acid groups carried by the polymer have been neutralized by a base to a degree of neutralization of 50 to 95%, and (ii) a water-soluble hydrophilic polymer, and (iii) a hydrophobically modified associative thickener.