Mixtures of optical brighteners and their use for the...

C - Chemistry – Metallurgy – 11 – D

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C11D 3/42 (2006.01) D06L 3/12 (2006.01)

Patent

CA 1136356

HOE 78/F 182 MIXTURES OF OPTICAL BRIGHTENERS AND THEIR USE FOR THE OPTICAL BRIGHTENING Abstract of the disclosure: Mixtures of optical brighteners consisting of from a) 0.98 to 0.50 part by weight of a mixture consisting of from 0.05 to 0.95 part by weight of a brightener of the series of the benzoxazolyl-stilbenes and of from 0.95 to 0.05 part by weight of a brightener of the series of the aryltriazoles and b) of from 0.02 to 0.5 part by weight of a brightener of the series of the bis-benzoxazolyl-stilbe- nes or of the bis-benzothiazolyl-stilbenes.

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