Process for making cationic starch

Details Process for making cationic starch Process for making cationic starch

C - Chemistry, Metallurgy

08

B

260/221.2

C08B 31/00 (2006.01)

Patent

CA 1223870

ABSTRACT OF THE DISCLOSURE This invention is directed to a process for making cationic starch by reacting in an aqueous medium said starch with a halohydrin quaternary amine in the presence of an alkaline catalyst. The process is characterized by (1) initiating said reaction with an alkali metal oxide or hydroxide and (2) thereafter adding an alkaline earth metal oxide or hydroxide to complete the reaction. This process permits up to 46 percent (dry weight) of starch in the reaction mixture. Cationic starches are used as flocculating agents for anionic colloids, suspending agents and emulsifying agents. 30,578-F

460439

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