C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/489, 260/481
C07C 309/42 (2006.01) C07C 303/04 (2006.01) C07C 303/06 (2006.01) C07C 303/14 (2006.01) C07C 303/30 (2006.01) C07C 303/32 (2006.01) C07C 309/58 (2006.01) C11D 1/22 (2006.01) C11D 3/34 (2006.01)
Patent
CA 1292013
ABSTRACT OF THE DISCLOSURE: The process for the preparation of acyloxybenzenesul- fonic acids of the general formula Image in which R denotes a (C1-C17)-alkyl or (C2-C17)-alkenyl radical, or alkali metal, alkaline earth metal or ammo- nium salts thereof, is carried out in the following stages: (a) sulfonation of phenol, (b) heat treatment of the phenolsulfonic acid formed as the intermediate pro- duct, (c) esterification of the phenolsulfonic acid and, if appropriate, (d) neutralization of the resulting (C2- C18)-acyloxybenzenesulfonic acid. As a result of the incorporation of stage (b), the process affords products in which the proportion of the 1,4-isomer compared with the 1,2-isomer is markedly increased, as a result of which these products can be used, in particular, as per- borate activators in detergents.
513062
Grabley Fritz-Feo
Reinhardt Gerd
Steinl Roland
Fetherstonhaugh & Co.
Grabley Fritz-Feo
Hoechst Aktiengesellschaft
Reinhardt Gerd
Steinl Roland
LandOfFree
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