Continuous process for making alkyl aldosides from starch or...

Details Continuous process for making alkyl aldosides from starch or... Continuous process for making alkyl aldosides from starch or...

C - Chemistry, Metallurgy

13

K

260/232.5

C13K 13/00 (2006.01) B01J 19/24 (2006.01) C07H 1/00 (2006.01) C07H 15/04 (2006.01)

Patent

CA 1114369

ABSTRACT OF THE DISCLOSURE A continuous process for making alkyl alclosides from poly- saccharides and more particularly mixed alkyl glycosides from starch by direct alcoholysis. A polysaccharide, such as starch, is slurried in an alcohol and passed through a heated, confined zone under pressure in the presence of an acid catalyst to form a mixed alkyl aldoside. The alcohols which may be used include methanol, ethanol, propanol and butanol, their isomers and mixtures thereof. Higher alkyl glycosides are surfactants and, in some instances, it is advantageous to use higher alcohols, such as decyl and dodecyl alcohols, to obtain particular sur- factant properties in the resulting alkyl glycosides. Mixed alkyl gly- cosides are useful in detergent applications, and as backbone polymers in polyurethane foams.

313923

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