Basf Aktiengesellschaft

Ralf Brueckmann

Johannes P Dix

Manfred Herrmann

Holger Schoepke

Norbert Zimmermann

Thomas Wirth

Juergen Hartmann

Erich Kromm

Helmut Reichelt

Arno Lange

Gunther Lamm

Rolf Fikentscher

Helmut Degen

Wolf-Dieter Kermer

Eberhard Beckmann

Klaus Taeger

Toni Simenc

Peter Freyberg

Heinz Leitner

Willi Bury

Herbert Leiter

Waldemar Dlugosch

Herbert Letter

Norbert Zimmerman

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.degree. C. under atmospheric pressure, sulfonating this aromatics fraction with oleum at 120.degree.-160.degree. C. using an amount of from 0.7 to 1.2 parts by weight of oleum having an SO.sub.3 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.

Preparation of condensates of arenesulfonic acids and formaldehyde and

A process for preparing nitrobenzophenones by reaction of benzene or its derivatives with nitrobenzoyl chloride in the presence of a Lewis acid, a color-stable modification of 1,4-dimethyl-5-cyano-3-[4-(2,4-dimethylbenzoyl)phenylazo]-2-hydroxy-6-pyri done and its use for dyeing or printing synthetic fiber material are described.

Preparation of nitrobenzophenones, and a color-stable modification of a

Tertiary amides useful as low-foam wetting agents in the textile industry have the formula I ##STR1## where R.sup.1 is straight-chain or branched C.sub.5 -C.sub.17 -alkyl or -alkenyl,

Tertiary amides useful as low-foam wetting agents in the textile industry

Copolymers suitable for use as temporary surface protection for two- or three-dimensional structures and as sizing agents are based on C.sub.1 -C.sub.8 -alkyl acrylates and/or methacrylates and are obtainable by free radical emulsion or solution polymerization of

Copolymers based on C.sub.1 -C.sub.8 -alkyl acrylates and/or

Dispersants of increased bioeliminability or biodegradability for use in dye and pigment preparations, as tanning aids, in plastics production and in crop protection formulations contain from 3 to 50% by weight of one or more aromatic or long-chain aliphatic carboxylic acids, salts thereof or anhydrides thereof or a mixture thereof.

Dye dispersants: aryl sulphonic acid-formaldehyde condensate or

Chemically modified proteins obtainable by reacting casein, collagen, gelatin, albumin or mixtures thereof

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Goennheim, Germany

Ralf Brueckmann