Compositions – Organic luminescent material containing compositions – Optical brightening compositions
Patent
1980-11-12
1982-02-23
Demers, Arthur P.
Compositions
Organic luminescent material containing compositions
Optical brightening compositions
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.
Mercer Alec V.
Paver Roger
Demers Arthur P.
Doyle Thomas C.
Sandoz Ltd.
Sharkin Gerald D.
Vila Richard E.
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