Sandoz Gmbh

Clariant Finance (bvi) Limited

Beat Henzi

Robert Egli

Berthold Gertisser

Ruedi Altermatt

Rolf Hasler

Roland Entschel

Ernst Schnider

Hermann Ulshoefer

Compounds of the formula ##STR1## wherein R, R.sub.1 and R.sub.2 are as defined in the specification and R.sub.3 is amino or --N.dbd.N--K, wherein K is a coupling component radical. The compounds wherein R.sub.3 is --N.dbd.N--K are useful as disperse dyes, and those wherein it is amino are useful as intermediates in the synthesis of those wherein it is --N.dbd.N--K.

2-Amino-3,5,disubstituted-4-halothiophenes and processes for the

A compound of the formula I ##STR1## in which D is a diazo component,

Disperse dyes

Compounds of the formula ##STR1## wherein R is halo,

Azo compounds having 2,4-disubstituted-3-halothienyl-5-diazo component

Compounds of the formula ##STR1## and mixtures thereof, wherien p1 R.sub.1 is hydrogen, chloro or bromo, p1 R.sub.2 is hydrogen, chloro, bromo or nitro, p1 R.sub.3 is hydrogen, chloro, bromo, nitro or --SCN, p1 R.sub.4 is hydrogen, chloro or bromo, p1 R.sub.5 is hydrogen or C.sub.1-4 alkyl, and p1 R.sub.5 is C.sub.8-14 alkyl, with the provisos that (i) at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is other than hydrogen, (ii) when R.sub.3 is nitro or --SCN, R.sub.2 is other than nitro, and (iii) when two or more of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are halo, then R.sub.3 is one of those halos, are useful as disperse dyes for dyeing substrates such as synthetic and semi-synthetic, hydrophobic, high molecular weight organic materials.

4-Substituted

A Monoazo compounds of the formula ##STR1## wherein D is a diazo component radical of the 4-nitrophenyl series, thienyl-2 series, thiazolyl-2 series or 5-nitrobenzoisothiazolyl-3 series,

Monoazo dyes having a substituted 1,4-phenylene coupling component

Mixtures of at least one monoazo compound having a 2-cyano

Compounds of the formula ##STR1## wherein each of R and R.sub.1 is independently hydrogen, C.sub.1-4 alkyl, phenyl or phenyl substituted by 1 to 3 C.sub.1-4 alkyl, C.sub.1-4 alkoxy or halo substitutents or

Monoazo compounds having an imidazolium-2 group linked through an azo

Disclosed is a method of rapid dyeing a substrate comprising polyester fibres at a temperature above 100.degree. C. comprising bringing into contact with the substrate an aqueous dyebath containing a mixture of at least two disperse dyes having each individually specific physicochemical properties.

Rapid dyeing of polyester fibers with a mixture of disperse dyes

Basic dyes free from sulfo groups of the formula ##STR1## in which Q signifies an unsubstituted or substituted phenyl or naphthyl radical,

Azo dyes having a quaternized heterocyclic diazo component radical and

Disclosed is a process for imparting coloration of good light fastness to a substrate comprising or consisting of homo- and co-polymers of acrylonitrile or of dicyanoethylene, or acid modified synthetic polyamide or polyester, which process comprises mass dyeing, dyeing or printing such substrate, employing, as dyestuff, a compound or mixture of compounds of formula I, ##STR1## wherein either R is hydrogen, or a straight or branched chain C.sub.1--8 alkyl radical, unsubstituted or mono-substituted by OH, CN, Cl, Br, CONH.sub.2, C.sub.1--4 -alkoxy, phenyl, phenoxy, --O--CO--R.sub.5 or --CO--O--R.sub.5,

Basic phenoxazine dyestuffs

Basic dyes, e.g., azo dyes and anthraquinone dyes, free from sulphonic acid groups which contain, a group of the formula ##STR1## in which R and R.sub.1, independently, are substituted or unsubstituted C.sub.1-4 alkyl or are linked to form a ring, or

Cationic dyes containing an aryloxy group linked through a bridging

Disclosed are cationic dyestuffs being coumarin or coumarinimide derivatives free from sulpho groups, bearing a 7-amino group and being characterized by having, in the 3-position, a cationic group of formula (a), ##STR1## in which A.sup..crclbar. signifies an anion, either

Coumarin dyestuffs

Compounds of the formula ##STR1## in which R.sub.1 signifies a substituted thiazole, thiadiazole, isothiazole, oxadiazole or thiophene radical,

Heterocyclyl-azo-phenyl dyes having a cationic group linked through a

Disclosed are basic azo dyes, free from sulphonic acid groups, and of formula, ##STR1## in which Q signifies an unsubstituted or substituted phenyl or naphthyl radical,

Azo dyes containing a heterocyclic ring having a quaternized nitrogen

Disclosed are basic dyes, e.g., azo dyes and anthraquinone dyes free from sulphonic acid groups and which contain, as characteristic group, a group of the formula ##STR1## in which R and R.sub.1, independently, are substituted or unsubstituted C.sub.1-4 alkyl or are linked to form a ring, or

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Neuallschwil, Switzerland

Beat Henzi