Sandoz Gmbh

Berthold Gertisser

Beat Henzi

Compounds of the formula ##STR1## in which R is --CH.sub.3, --C.sub.2 H.sub.5, --CH.sub.2 CH.sub.2 OH, --CH.sub.2 CH(OH)CH.sub.3 or --CH.sub.2 CH.dbd.CH.sub.2 ;

Monoazo compounds having a substituted thiazolium-5 diazo component

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 dyestuffs free of sulphonic acid groups contain an indoline group the 2-position of which is connected through a vinylene group to the N-atom of a 2,3-dihydro-4H-1,4-benzoxazine group. The dyestuffs are useful for the dyeing of leather, paper and plastics and, particularly, polyacrylonitrile or acid-modified polyester fibres.

Basic indoline dyestuffs

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

Growing community of inventors

Munchenstein, Switzerland

Berthold Gertisser