Clariant Finance (Bvi) Limited

Till Borchert

Bansi Lal Kaul

Bruno Piastra

Ruediger Jung

Arpad Acs

Martin Ulrich Schmidt

Val&eacute;rie Wolf

Steffen Schneider

Martin U Schmidt

Rüdiger Jung

The invention relates to a colorant of the formula (2) where M=Ca, Sr or a combination of Ca and Sr.

Phenylpyrazolone colorant

The invention relates to a pigment composition based on P.Y. 191 of the formula (1) containing 0.05 to 30 mol %, based on the sum of P.Y. 191 and a further yellow colorant, of at least one further yellow colorant of the formula (2) and/or of C.I. Pigment Yellow 100 in which R1, R2, R3 and R4 are each independently hydrogen, halogen, &#x2014;CH, &#x2014;NO, or NH&#x2014;R6 where R6 is C-C-alkyl; R5 is methyl or carboxyl, and where the compound of the formula (2) is not C.I. Pigment Yellow 191.

Pigment composition based on C.I. pigment yellow 191

Pigment for warpage-free polyolefins coloration

New heterocyclic compounds are disclosed which are used as intermediates for the preparation of trans-thiazine-indigo pigments which are in part new compounds and can be used for the mass pigmentation of organic substrates. Also disclosed are different environmentally friendly water-based processes for the preparation of the new heterocyclic compounds and the corresponding pigments.

Process for the preparation of thiazine-indigo compounds and of new intermediates therefor

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Darmstadt, Germany

Till Borchert