purpurkupplermonomer, polymeric purpurkuppler and farbfotografisches aufzeichnungsmaterial, the polymers purpurkuppler contains.

摘要

Magenta images of increased colour density Dmax are obtained with polymeric magenta couplers which contain polymerised units of a polymerisable pyrazoloazole coupler, containing carboxyl groups, of the formula I …IMAGE… in which… R1 is H, alkyl, aralkyl or aryl,… X is H or a group releasable by coupling,… Za, Zb and Zc are an optionally substituted methine group, =N- or -NH-, either the bond Za-Zb or the bond Zb-Zc being a double bond and the other bonds in each case being a single bond, and in which at least R1 or X or a substituent on a methine group, represented by Za, Zb or Zc, is an ethylenically unsaturated polymerisable group in an optionally polymerised form and at least R1 or X or a substituent on a methine group, represented by Za, Zb or Zc, contains a carboxyl group.