Bayer Aktiengesellschaft

Martin Wienkenhover

Hanns P Muller

Ulrich Von Gizycki

Volker Paulat

Karl-Heinz Wieser

Jan Mazanek

Klaus Wunderlich

Gerhard D Wolf

Karlheinz Wolf

Henning Giesecke

Detlef-Ingo Schutze

Walter Muller

Hans Schulze

Karl-Heinz Reinhardt

Werner Theuer

Wolfgang Karnath

Activator formulations which contain an aromatic polyurethane as binder are highly suitable for the preparation of non-metallic substrate surfaces for currentless metallization. The metal coatings produced are distinguished by good adhesion.

Process for improving the adherency of metallic coatings deposited

New polyisocyanate-polyaddition compounds, a process for their preparation and their use as wetting or dispersing agents for the incorporation of solids, in particular pigments, in lacquer or synthetic resin formulation.

New polyisocyanate-polyaddition compounds, a process for their

Pigment preparations which contain an organic pigment and/or carbon black and a surfactant from the sulphosuccinic acid ester and/or alkylbenzenesulphonate series and which have been dried, if appropriate after wet comminution, by spray- or freeze-drying from an aqueous medium, and the use of these preparations for pigmenting high molecular weight organic material, in particular thermoplastics.

Pigment preparations

Process for the preparation of naphthalene-1,8-dicarboximide which is optionally substituted in the naphthalene ring, characterized in that naphthalene-1,8-dicarboxylic anhydride which is optionally substituted in the naphthalene ring is reacted with an ammonium salt in an aqueous medium at a pH near to the neutral point, the reaction mixture is then acidified to a pH of 1 to 4 and the pH is subsequently adjusted to a value near to the neutral point.

Process for the preparation of naphthalene-1,8-dicarboximides

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Leverkusen, Germany

Martin Wienkenhover