Process for oxidising starch

Details Process for oxidising starch Process for oxidising starch

C - Chemistry, Metallurgy

08

B

C08B 31/18 (2006.01) C08B 37/00 (2006.01)

Patent

CA 2352222

The viscosity of starch and other carbohydrates can be lowered inexpensively, rapidly and without residual streams by treatment with hydrogen peroxide and a catalyst, in particular an organic acid or acid anhydride. After carbohydrate, hydrogen peroxide and catalyst have been brought together, the material is, if necessary, pre-dried at a temperature below 60 ~C and the dried material is then treated at a temperature of 80 - 140 ~C. The lowered viscosity is stable.

Selon cette invention, il est possible de réduire, de manière peu coûteuse, la viscosité de l'amidon et d'autres hydrates de carbone, rapidement et sans écoulements résiduaires, en effectuant un traitement à l'aide de peroxyde d'hydrogène et d'un catalyseur, notamment dans un acide organique ou un anhydride acide. Après avoir réuni l'hydrate de carbone, le peroxyde d'hydrogène et le catalyseur, le matériau, si nécessaire, est préséché à une température inférieure à 60 ·C, puis ce matériau séché est traité à une température comprise entre 80 et 140 ·C. Cette viscosité à l'état réduit est stable.

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