Preparation of light-colored, wash active .alpha.-...

Details Preparation of light-colored, wash active .alpha.-... Preparation of light-colored, wash active .alpha.-...

C - Chemistry, Metallurgy

11

D

260/485.3, 260/4

C11D 1/28 (2006.01) C11C 3/00 (2006.01)

Patent

CA 1167467

ABSTRACT OF THE DISCLOSURE This invention is directed to the preparation of .alpha.-sulfofatty acid esters. More particularly, this inven- tion is directed to a process for the simplified prepara- tion of light-colored, wash-active esters of .alpha.-sulfofatty acids with monovalent C1 to C8 alcohols or their salts from fats and oils of vegetable and/or animal origin comprising re-esterification with the monovalent alcohols or saponi- fication and esterification with the monovalent alcohols, separation of the fatty acid ester formed, hydrogenation of the fatty acid ester, sulfonation, and bleaching, wherein a fatty acid ester fraction from which accompanying fatty acid glycerides have removed to the extent of about 1 percent by weight or less, based upon the weight of the material to be sulfonated, is introduced into the sulfonation stage.

387023

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