| 摘要 |
<p>Disclosed are phthalocyanine dyes of formula I, I in which Me signifies copper or nickel Pc signifies a phthalocyanine radical, the R1's, independently, signify a linear, branched or cyclic aliphatic radical, unsubstituted or substituted by chlorine, bromine, alkoxy, cyano, alkylcarbonyl, alkoxycarbonyl, benzoyl, alkylcarbonyloxy, alkoxycarbonloxy or benzoyloxy, the R2's, independently, signify a phenyl radical, unsubstituted or substituted by a chlorine or bromine atom or a nitro or cyano group or by up to two substituents selected from methyl, methoxy and ethoxy groups, m signifies 1 or 2, and n signifies 2 or 3, the sum n + m being 3 or 4 and mixtures thereof.</p> |
