申请人:National Starch and Chemical Investment
Holding Corporation
公开号:EP0426987A1
公开(公告)日:1991-05-15
Rapidly immobilizing paper coating compositions may be prepared by formulating an aqueous coating composition comprising a cationic starch, pigment and sufficient base to obtain a pH above the pK of the starch derivative so that the starch is no longer cationic; coating the paper substrate; and lowering the pH of the coating such that the starch becomes cationic.