Cassella Aktiengesellschaft

Hoechst Aktiengesellschaft

Dystar Japan Ltd.

Hoechst Mitsubishi Kasei Co., Ltd.

Dystar Textilfarben Gmbh & Co. Deutschland Kg

Hubert Kruse

Ulrich Buhler

Konrad Opitz

Manfred Schneider

Reinhard Kuhn

Margareta Boos

Willi Steckelberg

Jurgen Kuhlwein

Erwin Dietz

Wolfgang Bauer

Horst Tappe

Manfred Hahnke

Reinhold Deubel

Heinz Uhrig

Siegfried Billenstein

Gert Nagl

Klaus Hofmann

Albert Bode

Klaus-Wilfried Wanken

Lothar Schlosser

Karl Sommer

Gunther Effenberger

Jan-Hilbert Mast

Heinz G Zorn

Rainer Az

Monoazo dyes which are stable under dyeing conditions, their preparation

The present invention relates to liquid or pulverulent textile dye preparations including one or more dispersants based on an alkoxylated and carboxylic-esterified castor oil of the general formula I ##STR1## where A, X.sup.1, X.sup.2, Z.sup.1, Z.sup.2, Z.sup.3, n.sup.1 and n.sup.2 are each as defined in Claim 1.

Textile dye preparations

The present invention relates to the dyestuff of the formula I ##STR1## modifications of this dyestuff which are stable during dyeing, processes for the preparation thereof and their use for dyeing and printing synthetic fiber materials.

Nitrobenzisothiazole azo dyestuff

The present invention relates to the use of phenol- and naphthol-novolak alkoxylate mixed esters which as dyeing auxiliaries in the dyeing of polyester-cellulose blend fabrics prevent soiling of the cellulose portion by the disperse dyestuff and to processes for the continuous dyeing of such blend fabrics using phenol- and naphthol-novolak alkoxylate mixed esters.

Use of novolak derivatives in the dyeing of polyester-cellulose blend

The present invention relates to mixtures of dyes of the general formula I ##STR1## in which R.sup.1 is hydrogen, halogen, (C.sub.1 -C.sub.4) -alkyl or (C.sub.1 -C.sub.4)-alkoxy;

Dye mixtures for the dyeing of textile hydrophobic fibre materials

The present invention relates to a process for dyeing leather by the exhaust method, characterized in that water-insoluble sulphur dyes in dispersed form are used.

Dyeing leather with water-insoluble sulphur dyes

Process for dyeing and printing blend fabrics of polyester and natural

The dyestuff mixture contains at least one dyestuff of the formula I ##STR1## and at least one dyestuff of the formula II ##STR2## wherein X and Y denote chlorine or bromine,

Blue azo dyestuff mixture for strong blue color on hydrophobic fibers

The .beta.-modification, which is stable under dyeing conditions, of the dyestuff of the formula ##STR1## is prepared by heating the .alpha.-modification, which is unstable under dyeing conditions, at temperatures of 60.degree. to 180.degree. C. and the .beta.-modification is useful in printing and dyeing fiber materials of cellulose esters, synthetic linear polyesters or mixed fabrics of the polyester fiber material with wool or viscose staple.

.beta.-modification of

In the process for the preparation of the dyestuff of the formula I ##STR1## by diazotization and coupling, the aqueous suspension present when the coupling has ended is heated to temperatures of 50.degree. C. up to the boiling point of the aqueous phase in the presence of a dispersing agent.

Process for the preparation of new crystal modification of an azo

A mixture of monoazo dyestuffs which contains one or more dyestuffs of the formula I ##STR1## and one or more dyestuffs of the formula II ##STR2## wherein R.sup.1 and R.sup.2 independently of one another each denote linear or branched alkyl with 1 to 6 carbon atoms, R denotes linear or branched alkyl with 1 to 5 carbon atoms and Hal denotes chloro or bromo, are outstandingly suitable for dyeing and printing hydrophobic materials.

Mixtures of blue disperse monoazo dyestuffs

Synthetic fiber materials are effectively colored by dyeing or printing with a dyestuff mixture containing at least two separate dyestuffs (I) and (II) in a weight ratio of (I):(II) of from (20 to 99):(80 to 1) wherein: (I) is at least one dyestuff of the formula ##STR1## and (II) is at least one dyestuff of the formula ##STR2## in which X and Y are the same or different and each is independently chloro and bromo:

Mixtures of blue mono-azo disperse dyestuffs and their use for dyeing

The invention relates to the use of water-soluble compounds obtained by esterifying alkylene oxide adducts on alcohols having 10 to 24 C atoms with carboxylic acids having up to 22 C atoms and carrying 1 to 6 carboxyl groups as preparation agents for dyestuffs which are insoluble to sparingly soluble in water and preparations which contain a dyestuff having a particle size of less than about 5 .mu.m and one of the preparation agents mentioned.

Use of esterified oxalkylates as formulation agents for dyestuffs and

Water-soluble compounds of the formula ##STR1## wherein A is an aryl radical, X represents identical or different groups of the formula --CH.sub.2 --CH.sub.2 -- and --CH.sub.2 --CH(CH.sub.3)--, R--CO-- denotes identical or different radicals of a carboxylic acid having up to 22 C atoms, n represents identical or different numbers from 8 to 150, p is a number from 1 to 10 and m represents 0 up to (p-0.5), are suitable for the preparation of colorants, particularly disperse dyestuffs or vat dyestuffs.

Composition containing colorants and esterified oxalkylates of aromatic

Oxalkylates of chemically modified natural rosin acids are useful for dyestuff preparations, especially for dispersions of disperse dyestuffs. The liquid and solid dyestuff preparations containing these oxalkylates are stable to storing even with high dyestuff concentrations, easily redispersible while developing little foam and easily biodegradable.

Growing community of inventors

Konigstein, Germany

Hubert Kruse