Bayer Aktiengesellschaft

Wolfgang Brinkwerth

Roderich Raue

Helmut Telle

Rudolf Schieder

Wolfgang Huffer

Udo Eckstein

Distyryl compounds of the formula (I) ##STR1## wherein R.sup.1 denotes hydrogen, halogen, alkyl and the like,

Distyryl compounds

Fluorescent dyestuffs of the general formula ##STR1## wherein R and R.sup.1 independently of one another represent hydrogen, a salt-forming cation, an alkyl radical with 1 to 16 C atoms or an aryl or aralkyl radical which is optionally substituted by non-chromophoric groups,

Fluorescent dyestuffs, processes for their preparation and their use as

Fluorescent dyestuffs of the formula ##STR1## wherein: R.sub.1 and R.sub.2 independently of one another represent hydrogen, a salt-forming cation, an alkyl radical with 1 to 8 carbon atoms or an aralkyl radical which is optionally substituted by non-chromophoric groups,

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Berg.-Gladbach, Germany

Wolfgang Brinkwerth