Preparation of a cationic starch paste

Details Preparation of a cationic starch paste Preparation of a cationic starch paste

C - Chemistry, Metallurgy

08

L

6/95

C08L 3/04 (2006.01) C08B 31/12 (2006.01)

Patent

CA 1117259

ABSTRACT OF THE DISCLOSURE A process for preparing a cationic starch dispersion wherein an alkaline, gelatinized starch is reacted with a cationic reagent such as a monomeric halogenated alkyl or alkenyl amine either concurrently with, or subsequently to, the cooking process resulting in a product in which the cationic reagent is chemically bound to the starch molecule. The process provides a single relatively inexpensive starch product which is conducive to on-site preparation of a number of cationic starch derivatives which can be utilized without additional treatment as a papermaking adjunct, textile size, waste-water treatment or tailings flocculent, etc. The process has reduced reaction times and improved efficiency over known processes.

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