Ciba Specialty Chemicals Corporation

Ciba-geigy Corporation

Basf Se Corporation

Jean-Pierre Bacher

Dieter Reinehr

Jean-Marie Adam

Claude Eckhardt

Urs Lehmann

Manfred Rembold

Werner Kaufmann

Francine Casi

Jean-Luc Birbaum

Gerardus De Keyzer

Andre Schmitter

Frédérique Wendeborn

Gisèle Baudin

Andr E Schmitter

Described is a black dichroic dye composition comprising 2 or more dyes, wherein at least one dye, generally a red dye and optionally a yellow dye, conforms to the formula A and at least one dye, usually a blue dye, conforms to the formula B Ar&#x2014;N&#x2550;N&#x2014;[Ar&#x2014;N&#x2550;N&#x2014;]Ar&#x2014;N&#x2550;N&#x2014;Ar(B) with symbols as defined in present claims. The dye composition is well suited for combination with liquid crystal material for use, inter alia, as polarizing film and/or in liquid crystal displays, showing, inter alia, high dichroic ratio and excellent compatibility with the LC material. 

Black dichroic dye

The invention accordingly relates to an optical recording medium comprising a substrate, a reflecting layer and a recording layer, wherein the recording layer comprises a compound of formula (I) or a mesomeric or a tautomeric form thereof, wherein Mis a metal cation in the oxidation state +3, a hydroxy or halogeno metal group wherein the metal is in the oxidation state +4, or an oxo metal group wherein the metal is in the oxidation state +5; (III) and (IV)are each independently of the other (V), (VI) or (VII); (VIII) is (IX), (X), (XI), (XII), (XIII), or (XIV); (XV) is (XVI) or Cheteroaryl unsubstituted or mono- or poly-substituted by R, R, Rand/or R; Qis N or CR, Qis N or CR, Q, Qand Qare each independently of the other CRR, O, S or NR, Qis CRor N and Qis CRor N; and Rand/or Rare O, S or NR. Please see the disclosure for the other substituents which are less relevant. The compounds of formula (I) are novel and also claimed, as well as the compound of formula (II), or a mesomer or tautomer thereof, wherein R38 is halogen , CF, NO, CN, COR, COOR, SOR, NCO or SCN, G, GM, RR, R, R, R, R, Rand Rare as defined in formula (I), Mis a cation with m positive charges, and m is an integer 1, 2 or 3. The optical recording media are remarkably suitable for DVD&#xb1;R (658 nm), especially at high recording speeds. 

High-capacity optical storage media

The present invention relates to novel pigments of formula(1), wherein Ris hydrogen or C&#x2013;Calkyl, Ris hydrogen, &#x2014;CN, &#x2014;COO-aryl, &#x2014;COO-heteroaryl, &#x2014;CONH-aryl or &#x2014;CONH-heteroaryl, and Ris the radical of a heteroaromatic compound of formulaor Rand Rtogether form a radical of formulawherein R, R, Rand Rare defined herein and to a process for the preparation of those pigments, and to their use in the production of coloured plastics or polymeric colour particles.

Lactam-based pigments and the use thereof in the production of colored plastics or polymeric color particles

The present invention relates to a method of mass-coloring synthetic materials, which comprises using at least one pigment dye of formula (1) wherein R and Rtogether form a phenyl or heteroaryl radical and Ris hydrogen, or Rand Rtogether form a phenyl or heteroaryl radical and R is hydrogen, and the rings A and B may each independently of the other be substituted by C4?alkyl, C&#x2013;Calkoxy, halogen, &#x2014;COOR, &#x2014;CONHRand/or by &#x2014;SR, wherein R, Rand Rare each independently of the others hydrogen, C&#x2013;Calkyl, C&#x2013;Caryl or heteroaryl, to synthetic materials colored with such pigment dyes, and to novel pigment dyes of formula (3), wherein Ris hydrogen or bromine

Method of mass-coloring synthetic materials

The cationic dyes of formula (1) specified in claimare suitable especially for colouring keratin-containing fibres, more especially for colouring hair.

Cationic reactive dyes

Azo dyes, process for their preparation and their use for dyeing or printing natural or synthetic materials

Method of dyeing or printing polyamide-containing materials

The present invention relates to new compounds which are useful as ultraviolet absorbing agents (UVAs) and to a method of improving the sun protection factor (SPF) of textile fibre material treated with the new compounds.

Compounds having ultra-violet absorption properties

There is disclosed a simple process for the preparation of hydroxyphenyl-1,3,5,-triazines of formula (1), which comprises reacting 1 mol of a salicyl compound of formula (2) with 2 (mol) of the benzamidine of formula (3). The novel triazines are useful AV absorbers for organic materials, in particular polyester fibre materials.

Process for the preparation of hydroxyphenyl-1,3,5-triazines

A fabric bleaching composition comprising a peroxy compound and a specified manganese complex is disclosed, as well as a process for bleaching and/or cleaning a fabric by contacting it with said fabric bleaching composition.

Fabric bleaching composition

Process for dyeing natural or synthetic polyamide fibre materials, which comprises dyeing these fibre materials with at least one anionic acid dye of the formula ##STR1## and treating the fibre material mentioned, during or after the dyeing process, with a colourless fixing agent which contains sulfo or sulfato groups and contains at least two fibre-reactive groups, where

Process for dyeing natural or synthetic polyamide fiber materials

Anionic acid dyes of the formula ##STR1## in which R.sub.1 and R.sub.2 independently of one another are hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 alkyl,

Anionic acid dyes, processes for their preperation and their use

Process for dyeing natural or synthetic polyamide fiber materials, which comprises dyeing these fiber materials with at least one anionic acid dye of the formula ##STR1## and treating the fiber material mentioned, during or after the dyeing process, with a colorless fixing agent which contains sulfo or sulfato groups and contains at least two fiber-reactive groups, where

Process for dyeing natural or synthetic polyamide fibre materials

The present invention provides a compound having the formula: ##STR1## in which M is hydrogen, sodium, potassium, calcium, magnesium, ammonium, mono-, di-, tri- or tetra-C.sub.1 -C.sub.4 alkylammonium, mono-, di- or tri-C.sub.1 -C.sub.4 hydroxyalkylammonium or ammonium that is di- or tri-substituted by a mixture of C.sub.1 -C.sub.4 alkyl and C.sub.1 -C.sub.4 hydroxyalkyl groups; R.sub.1 is a group having the formula: ##STR2## in which M has its previous significance and n is 1 or 2; and R.sub.2 is O--C.sub.1 -C.sub.12 alkyl or N(R.sub.3)(R.sub.4) in which R.sub.3 and R.sub.4, independently, are hydrogen, C.sub.1 -C.sub.2 alkyl or C.sub.1 -C.sub.4 hydroxyalkyl, or R.sub.3 and R.sub.4, together with the nitrogen atom, are the atoms required to form a pyrrolidine, piperidine or morpholine group. The compounds of formula (1) are particularly useful as fluorescent whitening agents for cotton in discontinuous processes, in the course of which an acidic treatment, especially a finishing treatment using a polymer resin, occurs.

Fluroescent whitening agents

Dye mixtures which comprise at least one dye of the formula ##STR1## and at least one dye of the formula ##STR2## in which Y.sub.1 is a radical of the formula ##STR3## and R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, X.sub.1, X.sub.2, X.sub.3, L, W.sub.1, B.sub.1, A.sub.1, and A.sub.3 are as defined in claim 1. The dye mixtures according to the invention are particularly suitable for dyeing or printing natural or synthetic polyamide fibre materials.

Growing community of inventors

Buschwiller, France

Jean-Pierre Bacher