Starch etherification method

Details Starch etherification method Starch etherification method

C - Chemistry, Metallurgy

08

B

C08B 31/08 (2006.01)

Patent

CA 2621974

The invention relates to a method for preparing a starch ether. The method comprises mixing cellulose with an ionic liquid solvent to dissolve the starch, and then treating the dissolved starch with an etherifying agent in the presence of a base to form a starch ether, and subsequently separating the starch ether from the solution, wherein both the dissolution and the etherification are carried out in the substantial absence of water.

L'invention concerne un procédé de préparation d'un éther d'amidon. Ledit procédé consiste à mélanger de la cellulose avec un solvant liquide ionique pour dissoudre l'amidon, puis à traiter l'amidon dissous avec un agent d'éthérification en présence d'une base pour former un éther d'amidon, et à séparer l'éther d'amidon de la solution, la dissolution et l'éthérification étant réalisées sensiblement sans eau.

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