Process for the production of light-colored -sulfofatty acid...

Details Process for the production of light-colored -sulfofatty acid... Process for the production of light-colored -sulfofatty acid...

C - Chemistry, Metallurgy

07

C

260/494.5

C07C 309/17 (2006.01) C07C 303/06 (2006.01)

Patent

CA 2000278

ABSTRACT OF THE DISCLOSURE Light-colored .alpha.-sulfofatty acid alkyl ester salts are produced by sulfonation of fatty acid alkyl esters with gaseous sulfur trioxide in the fatty acid alkyl esters are sulfonated in the presence of 0.25 to 1.5 mol-%, based on fatty acid alkyl ester, of at least one fatty acid amide corresponding to formula I (I) Image in which R1 is a linear C5-21 alkyl radical, R2 and R3 independently of one another represent a hydrogen atom, a linear or branched C1-6 alkyl radical or R2 and R3 together form a tetra- or pentamethylene chain of a heterocyclic ring system, in which a methylene group may optionally be replaced by an oxygen atom, a sulfur atom or an NH group.

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