Bis-triazolyl and bis-pyrazolyl stilbene compounds

Compositions – Organic luminescent material containing compositions – Optical brightening compositions

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Details

542435, 542436, C07D40314, C07D40514, C07D41314

Patent

active

043168159

ABSTRACT:
The invention relates to stilbene derivatives which are used as optical brightening agents, particularly as anionic brightening agents for polyamide and cellulosic substrates. These stilbene derivatives have the formula I ##STR1## in which both X's are the same and are CR.sub.5 or N, where R.sub.5 is hydrogen, C.sub.1-4 alkyl or phenyl;

REFERENCES:
patent: 3796706 (1974-03-01), Hausermann et al.
patent: 3928329 (1975-12-01), Fleck et al.
patent: 4167626 (1979-09-01), Fleck et al.

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