Process for phosphorylating starch in alkali metal...

C - Chemistry – Metallurgy – 08 – B

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6/225, 260/221.1

C08B 31/00 (2006.01) C08B 31/06 (2006.01)

Patent

CA 1098518

ABSTRACT OF THE DISCLOSURE Starch is phosphorylated by an improved pollution-free process which involves forming a reagent solution of an alkali metal tripoly- phosphate salt in water having 20 - 36% by weight of the salt dissolved therein, forming a starch cake containing no more than 45% by weight moisture, adding 2 - 30% by weight of the tripolyphosphate salt reagent solution to the starch cake, and drying and heat-reacting the thus- impregnated starch. In this process more efficient impregnation of the starch is achieved. The impregnation is preferably effected in a centrifuge.

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