Storage stable solutions of optical brighteners

Details Storage stable solutions of optical brighteners Storage stable solutions of optical brighteners

C - Chemistry, Metallurgy

07

D

C07D 251/68 (2006.01)

Patent

CA 2610518

The instant invention relates to storage stable solutions of optical brighteners based on certain salt forms of anilino- substituted bistriazinyl derivatives of 4,4 ' -diaminostilbene-2, 2 ' -disulphonic acid of formula (I) wherein R , R1 , R2 , M+ and n are as defined in the description, which do not need extra solubilising additives.

La présente invention concerne des solutions d~azurants optiques stables au stockage à base de certaines formes de sels de dérivés de bis-triazinyl anilino-substitués de 4, 4 ' - diaminostilbène - 2, 2 ' - acide disulphonique de formule (I), où R, R1, R2, M+ et n sont tels que définis dans la description, et ne nécessitant pas d~additifs de solubilisation supplémentaires.

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