Bis-naphthyl-ethylenes

Details Bis-naphthyl-ethylenes Bis-naphthyl-ethylenes

1974-12-16

1979-05-15

Torrence, Dolph H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

8 1W, 25230121, 260465D, 260465H, 427158, 562488, C07C 6360, C07C 6976, C07C12160

Patent

active

041549511

ABSTRACT:
A compound of the formula (1) ##STR1## in which X and X' stand for an optionally functionally modified carboxy or sulfo group and wherein the naphthalene nuclei may carry further non- chromophoric substituents and a process for their preparation. These compounds are valuable optical brighteners and can be applied by the methods known in this field.

REFERENCES:
patent: 3822305 (1974-07-01), Pintschovius et al.

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