公开(公告)号：ES2061903T3

公开(公告)日：1994-12-16

申请号：ES89122181

申请日：1989-12-01

Applicant: BASF AG

Inventor： BRUCKMANN RALF DR ,  DIX JOHANNES PETER DR ,  FIKENTSCHER ROLF DR ,  HERRMANN MANFRED DR ,  ZIMMERMANN NORBERT

IPC: C09B67/42 ,  C07C309/28 ,  C07G99/00 ,  C08G16/00 ,  C08G16/02 ,  C09K23/52

Abstract: The process is of sulphonating aryl compounds obtainable by pyrolysis of a naphthenic residual oil and fractional distillation of the pyrolysis products of the fraction produced at from 100 to 120 DEG C under atmospheric pressure, sulphonating this aromatic fraction using oleum at temperatures of from 120 to 160 DEG C in an amount of from 0.7 to 1.2 parts by weight of oleum, based on oleum having an SO3 content of 24 % by weight, per part by weight of the aromatic fraction, and subsequently condensing the arylsulphonic acids with formaldehyde in a known manner. The condensation products are used as dispersants, in particular in the preparation of dye formulations.