Lanxess Deutschland Gmbh

Bayer Aktiengesellschaft

Bayer Chemicals Ag

Bayer Aktiengesellchaft

Frank Linke

Horst Berneth

Hans-Ulrich Borst

Sabine Endert

Stephan Michaelis

Udo Herrmann

Ulrich Feldhues

Ronald Göbel

Dirk Pfuetzenreuter

Richard Sommer

Meinhard Rolf

Kent Faubion

Ronald G&ouml;bel

Wolfgang Frank

Lothar Weismantel

Dirk Pf&uuml;tzenreuter

Gunther Stolp

Bernhard Krumbach

Heinz-Josef Fuellmann

Sabine Schmauser, Sr

Heinz-Josef Fuellman

Dirk Pfützenreuter

Heinz-Josef Füllmann

The novel pigment preparations containing at least one metal azo pigment A) and at least one aliphatic monocarboxylic acid B) having 10 to 22 carbon atoms are suitable for the colouring of plastics and in this connection feature improved heat stability.

Pigment preparations

The present invention relates to novel methine dyes, methods for the preparation thereof and use thereof for dyeing plastics, especially polyamides, so as to obtain yellow to orange colourings with improved light fastness and improved thermal stability. Such dyes include a dye of the formula (I)  in which Ris hydrogen, halogen, COOH or COOR, Ris hydrogen, halogen, COOH, COORor CN, Ris alkyl or phenyl, Rand Rare each independently alkyl, R, R, R, Rand Rare each independently hydrogen, halogen, alkyl, alkoxy or COOR, and R, Rand Rare each independently alkyl.

Methine dyes

The present invention relates to novel methine dyes, methods for the preparation thereof and use thereof for dyeing plastics, especially polyamides, so as to obtain yellow to orange colourings with improved light fastness and improved thermal stability.

The present invention relates to novel methine dyes, methods for the preparation thereof and use thereof for dyeing plastics, especially polyamides, so as to obtain yellow to orange colourings with improved light fastness and improved thermal stability. Methine dyes for example accord to the formula (I)  in which Ris hydrogen, halogen, alkyl, COOH or COOR, Ris oxygen or sulfur, Ris hydrogen, halogen, COOH, COORor CN, Ris alkyl or phenyl, Rand Rare each independently alkyl, Rand Rare each independently hydrogen, halogen, alkyl or COOR, and R, Rand Rare each independently alkyl.

Novel red methine dyes, methods for the preparation thereof, and use thereof for dyeing plastics, especially vinyl polymers, provide red colourings with improved colour strengths and improved colour brilliance.

The present invention relates to novel methine dyes, methods for the preparation thereof and use thereof for dyeing plastics, especially polyamides, so as to obtain yellow colorings with improved light fastness and improved thermostability.

Yellow methine dyes

The novel yellow metal azo pigments based on at least two metal azo compounds which differ at least in the type of metal have both improved dispersion properties and improved color strengths and are of excellent suitability for pigmentation of pigment preparations for a broad field of use.

Metal azo pigments

The novel yellow metal azo pigments based on at least three metal azo compounds which differ at least in the type of metal have improved color strengths and are of excellent suitability for pigmentation of pigment preparations for a broad field of use.

The novel yellow metal azo pigments based on at least three metal azo compounds, which differ at least in the type of metal, have improved color strengths and are of excellent suitability for pigmentation of pigment preparations for a broad field of use.

The novel yellow metal azo pigments based on at least two metal azo compounds which differ a least in the type of metal have improved color strengths and are of excellent suitability for pigmentation of pigment preparations for a broad field of use.

Yellow metal azo pigments based on adducts of at least two metal azo compounds provide improved dispersion properties and are of excellent suitability for pigmentation of pigment preparations for a broad field of use.

The new metal azo pigments comprising the adduct of  

Metal azo pigments and pigment preparations produced therefrom

Use of pigments of the formula (I) containing melamine as guest compound and having a dispersion harshness of more than 250 as pigments for color filters for liquid-crystal displays.

Growing community of inventors

Cologne, Germany

Frank Linke