Bayer Aktiengesellschaft

Agfa Gevaert Nv

Agfa-gevaert

Peter Roschger

Stephan Michaelis

Volker Hederich

Horst Berneth

Paul R Callant

Karl-Josef Herd

Karin Hassenruck

Herman J Uytterhoeven

Horst Harnisch

Friedrich W Krock

Hauke Furstenwerth

Bernd Kaletta

Luc Bastiaens

Guy Michel Van Ackere

Bernd Woost

Gunther Franke

Process for the production of cyanine dyes

The present invention relates to an infra-red laser sensitive thermographic material and to a process for forming a heat mode image using such a material.

Method and material for the formation of a heat mode image

Dyestuffs of the formula (I) ##STR1## wherein Z represents SO.sub.2 or CO,

Bulk dyeing using quinophthalone dyestuffs

Dyestuffs of the formula (I) ##STR1## wherein n denotes 1 or 2, T denotes O or N--R.sub.0, wherein R.sub.0 denotes H, alkyl, aryl or acyl or, together with R.sub.2 or R.sub.3, forms a 5- to 7-membered ring, R.sub.1 if n=1, denotes aryl, hetaryl or heterocyclylidenemethyl and

Bulk dyeing of plastics

Dyestuffs of the formula ##STR1## wherein Z denotes a radical to complete a 3,4- or 2,3-pyridinylene, a 4,5-pyrimidinylene, a 3,4- or 4,5-pyridazinylene or a 2,3-pyrazinylene system and

Dyestuffs for bulk dyeing plastics

Bulk dyeing of plastics using dyestuffs of the formula (I) ##STR1## wherein n denotes 1 or 2, preferably 1,

Preparation of water-soluble reactive dyes containing vinylsulphonyl and .beta.-sulphatoethylsulphonyl groups by the oxidation of dyes containing .beta.-hydroxyethylmercapto radicals, and then sulphation and, if appropriate, conversion of the .beta.-sulphatoethylsulphonyl radical to the vinylsulphonyl radical with bases.

Process for the preparation of aminoazo dyes

Phthaloperinone dyestuffs of the general formula (I) ##STR1## wherein Z denotes SO.sub.2 or CO,

Phthaloperinone dyestuffs

The present invention relates to a process for coloring polymeric materials by dyeing or pigmenting said polymeric materials with a pigment salt having the formula (I): ##STR1## and tautomeric forms thereof, wherein M.sup.n+ is an n-valent cation.

Pigment salts and their use for dyeing and pigmenting

1,2-Naphthaloperinone dyestuffs of the formula (I) ##STR1## wherein Z denotes the radical for completion of a 1,2-naphthylene system and X, Y, n and m have the meaning given in the description, are prepared by condensation of substituted or unsubstituted naphthalene-1,2-dicarboxylic acids with substituted or unsubstituted naphthalene-1,8-diamines. The dyestuffs according to the invention have very good fastness properties and are employed in processes for bulk dyeing of plastics, preferably of vinyl polymers and polyesters.

Perinone dyestuffs for bulk dyeing of plastics

Preparation of water-soluble reactive dyes containing vinylsulphonyl and .beta.-sulphatoethylsulphonyl groups by the oxidation of dyes containing .beta.-hydroxyethylmercapto radicals, and then sulphation and, if appropriate, conversion of the .beta.-sulphatoethylsulphonyl radical to the vinylsulphonyl radical with bases. Novel fiber-reactive monoazo or disazo dyes of the structure ##STR1## wherein the substituents have the formulae given in the description and a method of coloring polyurethane plastics using dyestuffs of the formula ##STR2## as well as novel monoazo dyestuffs of the formula ##STR3##

Fiber-reactive monoazo and disazo dyes

Plastics are colored with at least one dyestuff of the following formula (I) ##STR1## in which the substituents have the meaning given in the description.

Growing community of inventors

Koln, Germany

Peter Roschger