Ciba-geigy Corporation

Ciba-geigy Ag

Urs Karlen

Stefan Koller

Raymond Defago

Werner Kneubuhler

Jean-Marie Adam

Hansrudolf Schwander

Peter Aeschlimann

Hans H Bosshard

Rudolf Schaulin

Hans Wilhelm Liechti

Roland Putzar

Angelo Della Casa

Hans Morawietz

Michael Diamantoglou

Peter Hindermann

Peter Baumgartner

Urs Keller

Hans Peter Koelliker

There are described dye mixed crystals consisting of 1 part of the dye of the formula ##STR1## and 0.5-5 parts of the dye of the formula ##STR2## the production thereof, and their use for dyeing and printing hydrophobic fiber materials, particularly polyester materials. Blue dyeings having a good dye build-up are obtained.

Dye mixture of 1,4-diamino anthraquinone-N-gamma-methoxy

A process for the production of methoxyanthraquinones of high purity by reaction of nitroanthraquinones with methanol and alkali, in the presence of alkali-resistant nitrous acid inhibitors.

Process for the production of methoxyanthraquinones

A process for printing flat-surface structures of manmade or regenerated polymer materials by the transfer printing process, which comprises the use of dyes of the formula ##STR1## wherein X represents hydrogen, halogen, or a lower alkylsulphone group,

Transfer printing dyes

Disperse dyes of the formula (I) ##STR1## wherein R represents substituted or unsubstituted alkyl, cycloalkyl or hydrogen, R' represents substituted or unsubstituted alkyl, cycloalkyl, aralkyl or phenyl, and R' represents a radical of the formulae --NR''R'' or --OX, wherein X represents substituted or unsubstituted alkyl, cycloalkyl, aralkyl or phenyl and R'' and R'' each represent hydrogen or substituted or unsubstituted alkyl radicals which, together with the nitrogen atom to which they are attached, are also able to form a 5- or 6-membered ring, and n is 1 or 2. The new dyestuffs give fast blue shades on polyester fabric.

Anthraquinone disperse dyes

The present invention provides useful new fibre-reactive disperse dyes of the formula (1) ##STR1## wherein R.sub.1 represents hydrogen or alkyl,

Methods for dyeing or printing using amino-anthraquinone reactive

1,5-dihydroxy-4,8-diaminoanthraquinone compounds of the formula I ##STR1## wherein Y represents a linear or branched alkyl group of 1 to 5 carbon atoms,

1,5-Dihydroxy-4,8-diamino-anthraquinone compounds arylated in 3-position

Dyes of the formula ##STR1## WHEREIN F is a dye of the disperse class, n is 1 or 2, and W is the radical of a diammonium or aminoammonium compound which is linked through an ammonium group to the methylenecarbonyloxy radical, said dyes finding utility in dyeing and printing hydrophobic synthetic organic materials, especially polyester materials in an aqueous dyebath at elevated temperatures, whereby the carbacyl group undergoes hydrolysis to form a disperse dye which exhausts onto the material.

Transiently water-soluble disperse mono-azo dyes containing a

Amino-anthraquinone reactive disperse dyes

An anthraquinone dyestuff which is sparingly soluble in water of the formula wherein Y is amino, alkylated amino or hydroxyl, the ring A can be substituted by halogen, methyl, ethyl, methoxy, ethoxy, nitro or acylamino, Z is acyl or hydrogen, and one of R.sub.1 and R.sub.2 is hydrogen and the other is a substituted or unsubstituted lower alkyl, cycloalkyl, or aryl or a carboxy ester group. The dyestuffs dye polyester fibers in orange or red-violet shades with good fastness.

Anthraquinone dyestuffs of the disperse series

A process for the manufacture of anthraquinone compounds of formula ##STR1## wherein X represents a hydrogen atom or a substituted or unsubstituted lower alkyl radical of 1 to 6 carbon atoms or a substituted or unsubstituted aryl radical, and the ring A can be further substituted, by sulphonating 1,5-dialkoxy-, 1,5-dicycloalkoxy- or diaryloxy-anthraquinone in the 2 and 6 positions, introducing two amino groups in positions 4 and 8 by treating the sulphonated intermediate with hydroxylamine or a salt thereof in sulphuric acid medium, in the presence of a metal catalyst, introducing the radical ##STR2## by reacting the boric acid complex of 1,5-dihydroxy-4,8-diaminoanthraquinone-2,6-disulphonic acid with a compound of formula ##STR3## saponifying the boric acid groups and splitting off a SO.sub.3 H group, which process comprises using 1,5-dialkoxy-, 1,5-dicycloalkoxy- or 1,5-diaryloxyanthraquinone as starting compounds and reacting them to give the end product of formula I.

Process for the manufacture of anthraquinone compounds

Anthraquinone dyestuffs of the formula ##SPC1## In which R.sub.1 and R.sub.2 independently of one another each denote hydrogen or a lower alkyl group, X denotes a direct bond, --CH.sub.2 --, --O-- or --S--, and Y denotes the nitrile group, a thiocarboxylic acid ester group, a carbacyl group, or an optionally substituted aliphatic, cycloaliphatic, carbocyclic-aromatic or heterocyclic radical. The dyestuffs yield fast blue shades on polyesterfibers.

Growing community of inventors

Magden, Switzerland

Urs Karlen