Rapidly immobilizing paper coating compositions

Details Rapidly immobilizing paper coating compositions Rapidly immobilizing paper coating compositions

D - Textiles, Paper

21

H

400/1337, 117/16

D21H 19/50 (2006.01) D21H 19/54 (2006.01) D21H 19/56 (2006.01)

Patent

CA 2026043

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.

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