Stilbene compounds

Details Stilbene compounds Stilbene compounds

1977-11-14

1978-09-12

Shaver, Paul F.

Harness for working animal

25230124, 25230127, 25230128, 25230129, C09B 2300

Patent

active

041139380

ABSTRACT:
Novel stilbene compounds of the formula ##STR1## in which R.sub.1 and R.sub.2 independently of one another are hydrogen or chlorine and A is a mono-nuclear or poly-nuclear aromatic heterocyclic structure which contains oxygen atoms or oxygen and nitrogen atoms and is unsubstituted or substituted by non-chromophoric substituents, as well as their use in a process for optically brightening organic material are disclosed.

REFERENCES:
patent: 3642783 (1972-02-01), Siegrist et al.
patent: 3644345 (1972-02-01), Siegrist et al.
patent: 4061860 (1977-12-01), Kormany et al.

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