[GOLCHERT URSULA, NAU STEFAN, MEHLER NILS, BECKER ERNST, KHRENOV VICTOR, SCHWARZ-BARAC SABINE, RECKTENWALD ROGER, GOLDACKER THORSTEN, SADO KRZYSZTOF, BENDZKO NORBERT, HENN JOACHIM, VOGT MARKUS, SCHUBERT MARKUS, CLEFF DANIEL, RIEDEL-BENDZKO BIRGIT] DE The invention relates to a method for coloring thermoplastic molding compounds, preferably a polymethyl(meth)acrylate molding compound, using novel aqueous colorant preparations. The invention further relates to a novel water-based colorant preparation. (No suitable figure)

[SCHWARZ-BARAC, Sabine, RECKTENWALD, Roger, GOLDACKER, Thorsten, GOLCHERT, Ursula, KHRENOV, Victor, NAU, Stefan, MEHLER, Nils, SADO, Krzysztof, BECKER, Ernst, BENDZKO, Norbert, HENN, Joachim, VOGT, Markus, SCHUBERT, Markus, CLEFF, Daniel, RIEDEL-BENDZKO, Birgit] Kirschenallee 64293 Darmstadt;Im Meerchen 18a 64560 Riedstadt;Ottostraße 5 64625 Bensheim;Am Birkehe 5 64380 Roßdorf;G.-von-Fechenbach-Str. 16b 64807 Dieburg;Reuterweg 60 60323 Frankfurt;Forststraße 21 64572 Büttelborn;In der Hohl 5 64395 Brensbach;Lessingstrasse 1/801 64331 Weiterstadt;Ludwigstraße 3 64625 Bensheim;Lurchenweg 21 51375 Leverkusen;Scharderstraße 14 51709 Marienheide;An der Ölmühle 42 51069 Köln;Grünenborn 11 53797 Lohmar;Waldstraße 11 34454 Bad Arolsen;Lurchenweg 21 51375 Leverkusen The invention relates to a method for coloring thermoplastic molding compounds, preferably a polymethyl(meth)acrylate molding compound, using novel aqueous colorant preparations. The invention further relates to a novel water-based colorant preparation.

[SCHWARZ-BARAC SABINE, RECKTENWALD ROGER, GOLDACKER THORSTEN, GOLCHERT URSULA, KHRENOV VICTOR, NAU STEFAN, MEHLER NILS, SADO KRZYSZTOF, BECKER ERNST, BENDZKO NORBERT, HENN JOACHIM, VOGT MARKUS, SCHUBERT MARKUS, CLEFF DANIEL, RIEDEL-BENDZKO BIRGIT] DE The invention relates to a method for coloring highly transparent thermoplastic materials using an aqueous colorant preparation, and to a novel water-based colorant preparation. The object of the invention was to provide an aqueous colorant preparation and a process for coloring thermoplastic polymer molding materials that effectively reduces or even avoids the undesired increase of the yellowness index under thermal stress. The object is achieved using an aqueous colorant preparation comprising a dispersing additive which, in the dried state, has a mass loss of not more than 15% by weight in isothermal thermogravimetric analysis at 260°C for 60 min. The novel aqueous colorant preparation is pigmentable both with organic and inorganic pigments and contributes to lower colour locus variations in the coloured moulding materials than in the case of the prior art colorant preparations.

[RIEDEL-BENDZKO BIRGIT, CLEFF DANIEL, BECKER ERNST, HENN JOACHIM, SADO KRZYSZTOF, SCHUBERT MARKUS, VOGT MARKUS, MEHLER NILS, BENDZKO NORBERT, RECKTENWALD ROGER, SCHWARZ-BARAC SABINE, NAU STEFAN, GOLDACKER THORSTEN, GOLCHERT URSULA, KHRENOV VICTOR] DE

[SCHWARZ-BARAC SABINE, RECKTENWALD ROGER, GOLDACKER THORSTEN, GOLCHERT URSULA, KHRENOV VICTOR, NAU STEFAN, MEHLER NILS, SADO KRZYSZTOF, BECKER ERNST, BENDZKO NORBERT, HENN JOACHIM, VOGT MARKUS, SCHUBERT MARKUS, CLEFF DANIEL, RIEDEL-BENDZKO BIRGIT] DE

[SCHWARZ BARAC SABINE, RECKTENWALD ROGER, GOLDACKER THORSTEN, GOLCHERT URSULA, KHRENOV VICTOR, NAU STEFAN, MEHLER NILS, SADO KRZYSZTOF, BECKER ERNST, BENDZKO NORBERT, HENN JOACHIM, VOGT MARKUS, SCHUBERT MARKUS, CLEFF DANIEL, RIEDEL BENDZKO BIRGIT] DE

[RIEDEL-BENDZKO, Birgit, HENN, Joachim, GRÖNEN, Jürgen, BENDZKO, Norbert, DÖRING, Patrik] Cliev 11, 51515 Kürten-Herweg, DE

[SCHWARZ-BARAC SABINE, RECKTENWALD ROGER, GOLDACKER THORSTEN, GOLCHERT URSULA, KHRENOV VICTOR, NAU STEFAN, MEHLER NILS, SADO KRZYSZTOF, BECKER ERNST, BENDZKO NORBERT, HENN JOACHIM, VOGT MARKUS, SCHUBERT MARKUS, CLEFF DANIEL, RIEDEL-BENDZKO BIRGIT] DE

[SCHUBERT MARKUS, HENN JOACHIM, BENDZKO NORBERT, SCHWARZ-BARAC SABINE, KHRENOV VICTOR, RECKTENWALD ROGER, GOLDACKER THORSTEN, GOLCHERT URSULA, NAU STEFAN, MEHLER NILS, SADO KRZYSZTOF, BECKER ERNST, VOGT MARKUS, CLEFF DANIEL, RIEDEL-BENDZKO BIRGIT] DE The invention relates to a method for coloring thermoplastic molding compounds, preferably a polymethyl(meth)acrylate molding compound, using novel aqueous colorant preparations. The invention further relates to a novel water-based colorant preparation.

[Sabine Schwarz-Barac, Roger Recktenwald, Thorsten Goldacker, Ursula Golchert, Victor Khrenov, Stefan Nau, Nils Mehler, Krzysztof Sado, Ernst Becker, Norbert Bendzko, Joachim Henn, Markus Vogt, Markus Schubert, Daniel Cleff, Birgit Riedel-Bendzko] DE Riedstadt The invention relates to a method for coloring thermoplastic molding compounds, preferably a polymethyl(meth)acrylate molding compound, using novel aqueous colorant preparations. The invention further relates to a novel water-based colorant preparation.