C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/492
C07C 303/06 (2006.01) B01F 17/08 (2006.01) C07C 303/32 (2006.01) C07C 309/17 (2006.01) C07C 309/62 (2006.01) C11D 1/20 (2006.01) C11D 1/28 (2006.01) C11D 17/00 (2006.01)
Patent
CA 1287839
ABSTRACT OF THE DISCLOSURE In the production of washing-active .alpha. -sulfofatty acid esters by sulfonation of fatty acid alkyl esters with SO3 in molar ratios of up to 1:2 and more espe- cially of from 1:1.2 to 1:1.8 and subsequent working- up of the crude sulfonic acid in aqueous medium with salt formation, aqueous pastes which are mobile, more especially pumpable, at moderately elevated tem- peratures are obtained by subjecting the crude sulfo- nate before the treatment with the aqueous medium to a post-reaction with at least about 0.5 mole equivalent, based on the SO3 which is not used for the .alpha.-sulfonation, of monohydric alcohols and/or alkoxyla- tion products thereof at temperatures above 70°C and adjusting the solids contents of the .alpha.-sulfofatty acid ester salts to more than 35% by weight in the sub- sequent aqueous working-up step.
522074
Jost Frantisek
Piorr Robert
Ritterbex Horst
Rommerskirchen Hans-Josef
Henkel Kommanditgesellschaft Auf Aktien
Jost Frantisek
Piorr Robert
Ritterbex Horst
Rommerskirchen Hans-Josef
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