Clariant Finance (Bvi) Limited

Jordi Berenguer

Manuel Jose Domingo

Jose Rocas

Ludwig Hasemann

Susana Basolas

Joan Bosch

The present invention concerns concentrated aqueous solutions of anionic disazo dyes, comprising salts and or the free acids of anionic dyes of the formula and 2-(2-butoxyethoxy) ethanol wherein the substituents are each as defined in claimand the use of these solutions for dyeing and/or printing hydroxyl-containing substrates and for producing inkjet inks.

Stable liquid formulations of anionic dyes

1:2-metal complex dyes of the formulawherein the symbols R, R', R, R&#x2032;, R, R&#x2032;, Y, Z, n, n&#x2032;, Me, M and (Kat)are defined as in the Claims, mixtures thereof, their compositions, their production and their use as anionic dyes for dyeing substrates, especially leather, in brown to red shades.

1:2 metal complex dyes, their compositions, their production and their use

Tetrakisazo dyes of formula (I), as defined in claim optionally in admixture with trisazo dyes of formula (X) as defined in claim are valuable anionic dyes for the dyeing of substrates dyeable with anionic dyes, in particular for the dyeing of leather in very intense dark shades.

Tetrakisazo dyes, their production and use

Azo dyes containing sulphur dye entities as a constitutional component are dyes of valuable properties, in particular for the dyeing of leather.

Azo dyes, their production and use

A cationic dye (S.sub.K) comprising at least one quaternary ammonium group or protonated or protonizable tertiary amino group and at least one chromophoric radical, wherein the chromophoric radical is the radical of an optionally (pre)reduced sulphur dye, its precursor (S.sub.K1) containing a cationic group which is a secondary amino group of basic character, which is optionally protonated but does not contain an acid group in a substituent of this cationic group, or a mixture thereof and desolubilized derivatives thereof or of their non-quaternized and non-tertiary precursors, which in standardized form are usable as pigments.

Growing community of inventors

El Prat de Llobregat, Spain

Jordi Berenguer