Basf Se Corporation

Ciba Specialty Chemicals Corporation

Basf Se Ludwigshafen

Ursula Luterbacher

Thomas Ruch

Thomas Eichenberger

Christoph Krebs

Marc Maurer

Ralf Bauer

Peter Sutter

The invention relates to colored and/or fluorescent copolycondensates which are obtained by reaction of colorants substituted by at least two reactive groups which do not interfere with one another, with selected cyclic dicarboxylic acids (especially 1,4-cyclohexanedicarboxylic acid), aliphatic diols (especially ethylene glycol), cyclic diamines (especially isophoronediamine) and/or amino acids in particular amounts.

Migration-free coloured copolycondensates for colouring polymers

A process for preparing a black colorant, preferably a black pigment, characterized in that a compound of the Formula (I) is reacted with a compound of the Formula (II) in a molar ratio of 1:2, in the presence of a catalyst which in water at 25&#xb0; C. has a pK&#x2266;4.5. For the definition of Rto R, refer to the description; preferably all are H. Likewise claimed are new crystal polymorphs obtainable by this process, and preferably single-phase mixed crystals. Also claimed are synergistic compositions. These compositions exhibit increased light stability in plastics stabilized with basic light stabilizers when they are pigmented with colorants of the invention rather than with known black pigments such as carbon black. The specification also relates, furthermore, to the use of the black colorants of the invention for coloring paints, printing inks and plastics in the mass, and to mulch film, instrument panels, woven fabrics, garden furniture items or elements for the construction industry that are pigmented with said colorants. 

Organic black pigments and their preparation

A process for mass-coloring high molecular weight material, in which process a compound of formula or a tautomer thereof,wherein The colorations obtained have good light stability and thermal stability, especially in polyolefins.

Monoazo colorants for mass-colouring of polymers

The present invention relates to dyes of formula (1) that are soluble in organic solvents, wherein Catis an organic cation, to a process for their preparation and to their use in the production of colored plastics or polymeric color particles, printing colorants, printing pastes and printing inks.

Dyes that are soluble in organic solvents

The present invention relates to dyes of formula (1) that are soluble in organic solvents, wherein Catis an organic cation, to a process for their preparation and to their use in the production of colored plastics or polymeric color particles, printing colorants, printing pastes and printing inks. 

Growing community of inventors

Reinach, Switzerland

Ursula Luterbacher