Purification of fluorescers

Details Purification of fluorescers Purification of fluorescers

C - Chemistry, Metallurgy

07

D

260/249.1, 260/2

C07D 251/42 (2006.01) C07D 251/68 (2006.01) D06L 3/12 (2006.01)

Patent

CA 1047036

Abstract of the Disclosure A process for removing triazine derivative impurities from fluorescent agents from the group of derivatives of 4,4'-di(sym-triazinylamino) stilbene-2,2'-disulphonic acid and the salts thereof, by washing said fluorescent agent with an aqueous solution of a strong base under atmospheric pressure and at a temperature of below 100°C. - 1 -

263973

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