Distyryl compounds

Details Distyryl compounds Distyryl compounds

1975-12-16

1977-04-05

Demers, Arthur P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

25230122, 252543, 427158, C07D30791

Patent

active

040161560

ABSTRACT:
New distyryl compounds of the formula ##STR1## WHEREIN R.sub.x denotes an optionally modified sulphonic acid group, a sulphone group, an optionally functionally modified carboxylic acid group or the nitrile group, R.sub.x ' denotes an optionally functionally modified sulphonic acid group, a sulphone group, an optionally functionally modified carboxylic acid group, the nitrile group, alkyl, alkoxy, chlorine or hydrogen, and R.sub.y and R.sub.y ', independently of one another, denote hydrogen, the sulphonic acid group or a salt thereof, chlorine, alkyl or alkoxy; these compounds are particularly useful as optical brighteners.

REFERENCES:
patent: 3627758 (1971-12-01), Weber et al.
patent: 3697513 (1972-10-01), Siegrist
Siegrist et al. Helvetia Chimica Acta 52 (1969) pp. 1282-1284, 1307.

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