C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/504.4
C07C 309/35 (2006.01) C07G 99/00 (2009.01) C08G 16/02 (2006.01)
Patent
CA 2003989
O.Z. 0060/40400 Abstract of the Disclosure: Condensates of arenesulfonic acids and formaldehyde are prepared by sulfonating arenes obtainable by thermal cracking of a naphthenic residue oil and fractional distillation of the cracked products of the fraction obtained at 100-120°C under atmospheric pressure, sulfonating this aromatics fraction with oleum at 120-160°C using an amount of from 0.7 to 1.2 parts by weight of oleum having an SO3 content of 24% by weight per part by weight of aromatics fraction, and subsequently condensing the arenesulfonic acids with formaldehyde in a conventional manner, and are used as dispersants, in particular for preparing dye formulations.
Brueckmann Ralf
Dix Johannes Peter
Fikentscher Rolf
Herrmann Manfred
Zimmermann Norbert
Basf Aktiengesellschaft
Borden Ladner Gervais Llp
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