National Starch and Chemical Investment Holding Corporation

Leroy R Peek

Matthew J Henley

Chung-Wai Chiu

Daniel B Solarek

Michael Timothy Philbin

Roger Jeffcoat

Ralph M Trksak

Walter Maliczyszyn

Paul Gregory

Aldehyde cationic derivatives of galactose containing polysaccharides which are obtained by oxidizing galactose containing polysaccharides with the enzyme galactose oxidase. The enzyme oxidized products have an aldehyde function at a specific position of the polysaccharide, i.e., the C.sub.6 position, of the galactose unit, and the cationic derivatives thereof have unexpected and significantly improved properties when used as paper strength additives.

Aldehyde cationic derivatives of galactose containing polysaccharides

A method of making paper in an alkaline or acid system wherein a selected crosslinked, cationized or amphoteric starch is added to the system, said starch being crosslinked by adding enough crosslinking agent to provide a starch having a breakdown viscosity of from about 2 to 85% and wherein the crosslinked, cationized or amphoteric starch is jet cooked under super atmospheric pressure at a temperature of from about 195.degree. to 325.degree. F.

Method of papermaking using crosslinked cationic/amphoteric starches

A method of preparing high solids liquid starch is provided using a modified two step batch cooking procedure.

High solids liquid starch prepared by batch cooking

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Milford, NJ, United States of America

Leroy R Peek