PAPER SIZING USING AN AGENT CONTAINING UNIFORMLY BOUND OCTENYL SUCCINIC ANHYDRIDE GROUPS MADE BY THE REACTION OF OCTENYL SUCCINIC ANHYDRIDE ONTO A DISPERSED WAXY STARCH

摘要

The application relates to an agent containing bound octenyl succinic anhydride groups made via the reaction of octenyl succinic anhydride onto a dispersed waxy starch, which provides significant improvements in paper porosity reduction, when added at a low level to a commodity type surface starch dispersion and used to surface size paper.

主权项

1. A process comprising:
a) slurrying a waxy starch and gelatinizing the slurry; b) optionally cooling the dispersion; c) optionally acidifying the optionally cooled dispersion and waiting until the optionally acidified dispersion reaches a funnel viscosity of from about 20 seconds to about 30 seconds; d) reacting the dispersion from step c) with octenylsuccinic anhydride; e) mixing the reacted dispersion with a dispersion or cook of converted starch; and f) applying the starch dispersion to paper.