| http://www.w3.org/ns/prov#value | - f) dyes of the formula (14), in which R8 is hydrogen or C1 -C4 alkyl, R9 is hydrogen, C1 -C4 alkyl, C1 -C4 alkoxy or C2 -C4 alkanoylamino, R10 is hydrogen, C1 -C4 alkyl, C1 -C4 alkoxy or halogen, X is a direct bond or a radical of the formula --CONHCH2 CH2 --, and benzene rings A, B and C, independently of one another, are unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy or halogen, and
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