Coating compositions comprising polymer blends

摘要

Coating compositions comprising intimate blends of a polyvinyl acetal, an alkoxymethyl polyaminotriazine and an oligomeric polystyrene or poly( alpha -methylstyrene). The coating compositions may contain up to 500 parts by weight of an inert non-photoconductive pigment per 100 parts by weight of polymer blend. The compositions are useful for the preparation of electrographic recording media which possess improved resistance to curl under variable conditions of humidity.