A E Staley Manufacturing Company

Henkel Corporation

Claris D Roth

Kenneth B Moser

William A Bomball

Allen D Urfer

Gail M Howell

Remarkably good surfactancy characteristics are exhibited by alkylene oxide (e.g., ethylene oxide, propylene oxide, etc.) adducts of relatively low degree of polymerication, (D.P.), long chain glycoside compositions of the sort which are predominantly composed of long chain monoglycoside species and in which the types and relative proportions of any long chain polyglycoside species contained therein are such that the average degree of polymerization of such long chain glycoside constituents is less than 2.7. The subject low D.P. long chain polyglycoside alkylene oxide adducts exhibit surfactancy and/or detergency characteristics at least about as good as, and in some respects substantially better than, the corresponding alkylene oxide adducts of higher D.P. long chain glycoside materials.

Alkylene oxide adducts of glycoside surfactants and detergent

A glycoside compound containing one or more fatty acid ester or ether groups is used as a mold release agent in the production of molded articles from polymeric resinous materials. Said mold release agent can function as either external or internal mold release agent. The molded article also has improved tie coating properties.

Process for making molded articles with mold release agents

The present invention relates to the preparation of aldoside mixtures, recovering at least a portion of one aldoside component therefrom and reusing the remaining portion of the aldoside mixture to prepare additional aldoside. The aldoside mixture may be prepared by slurrying the carbohydrate in alcohol and passing the slurry through a continuous reactor at an elevated temperature under fluid pressure in the presence of an acid catalyst. The resultant aldoside mixture may then be partitioned into a mother liquor portion and an aldoside portion by selectively recovering at least a portion of one aldoside from the crude aldoside mixture with the remaining mother liquor being recycled. Crude glycoside mixtures prepared from starch and methanol slurries are suitable substrates for selectively recovering methyl-alpha-D-glucopyranoside. The methyl-alpha-D-glucopyranoside may be easily crystallized and recovered from the glycoside mixture because of its lower solubility in methanol. The resultant mother liquor (rich in the remaining components of the glycoside mixture) in combination with freshly added starch and methanol provides a reaction medium which optimizes methyl-alpha-D-glucopyranoside production.

Method of using recycled mother liquors to produce aldosides

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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Decatur, IL, United States of America

Claris D Roth