Continuous process for making alkyl aldosides from starch or oth

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

1978-09-01

1980-09-16

Brown, Johnnie R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536120, C07H 100

Patent

active

042231299

ABSTRACT:
A continuous process for making alkyl aldosides from polysaccharides 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 surfactant properties in the resulting alkyl glycosides. Mixed alkyl glycosides are useful in detergent applications, and as backbone polymers in polyurethane foams.

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patent: 3598865 (1971-08-01), Lew
patent: 3707535 (1972-12-01), Lew

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