Sandoz Gmbh

Emil J Moriconi

Helmut A Moser

Paul Doswald

Horst Schmid

Manfred Greve

Polymers comprising two the more recurring units of formula ##STR1## wherein A.sub.1 is an aromatic bridging group

Polymeric azo compounds containing at least four cationic groups

Metal-free azo compounds of the formula ##STR1## wherein Ra is an aromatic group or an active methylene coupling component radical as defined in the specification,

1:1 and 1:2 metal complexes of sulfo group-free azo compound having on

Sulfo group-free azo compounds having on average at least 1.3 basic

Metal-free disazo compounds containing at least two basic

Disazo and polyazo compounds of the formula ##STR1## wherein each A is independently ##STR2## and each R.sub.3 is independently C.sub.1-4 alkyl, or

Sulfo group-free disazo and polyazo compounds containing two

Disazo and polyazo compounds of the formula ##STR1## wherein each A is independently ##STR2## and

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Basel, Switzerland

Emil J Moriconi