Method for the preparation of highly substituted granular...

Details Method for the preparation of highly substituted granular... Method for the preparation of highly substituted granular...

C - Chemistry, Metallurgy

08

B

260/221

C08B 31/00 (2006.01) C08B 31/02 (2006.01) C08B 31/08 (2006.01)

Patent

CA 1067489

MORTON W. RUTENBERG WADYM JAROWENKO MARTIN M. TESSLER A METHOD FOR THE PREPARATION OF HIGHLY SUBSTITUTED GRANULAR STARCHES ABSTRACT OF THE DISCLOSURE Highly substituted granular starches are prepared by reacting the starch in an aqueous system with a reagent capable of producing an acetal cross-linkage; reacting the resultant acetal cross-linked starch with a mono-functional esterifying or etherifying reagent under aqueous alkaline conditions and removing the acetal cross-linkages by treating under acid conditions. The highly substituted starches are particularly useful in operations, such as papermaking, wherein the cross-linkages can be removed and the starch readily dispersed during a relatively low pH starch cooking process. * * * - 1 -

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