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US 4,233,440 AGranted
Triazolyl-stilbenes
AssigneeBayer Aktiengesellschaft
InventorsAlfons Dorlars, Otto Neuner
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Abstract
The subject matter are triazolyl-stilbenes of the formula ##STR1## wherein R.sub.1 represents an optionally substituted styryl, biphenylyl or naphthyl radical, R.sub.2 represents hydrogen, halogen, or an alkyl or phenyl radical and R.sub.3 represents nitrile, carboxyl or carboxylic acid ester, as well as their preparation and their use as optical brighteners.
Claims12
A triazolyl-stilbene of the formula ##STR36## wherein R.sub.2 is H or Cl,
- R.sub.3 is p--CN, o--CN, p--COOCH.sub.3 or p--COOC.sub.2 H.sub.5, and
- X is H, Cl, COOCH.sub.3 or COOC.sub.2 H.sub.5.
Dependencies are inferred from the claim text.