Photographic film units containing aza heterocyclic polymeric mordants

Claim 1

A photographic element comprising a support and a layer comprising non-uniformly and imagewise the reaction product of (a) a polymeric mordant comprising recurring units having the formula: ##STR36## wherein A is one or more polymerized units of α,β-ethylenically unsaturated monomers, R is H or alkyl containing from 1 to 6 carbon atoms, Q is a linking group selected from the group consisting of alkylene, arylene, arylenealkylene, COOR 3 , and CONHR 3 wherein R 3 is selected from the group consisting of alkylene, arylene and arylenealkylene, R 1 is H, alkyl, an aromatic group or the atoms which, taken together with Q, form a ##STR37## each Y is selected from the group consisting of H or an inert group, X is a leaving group which can be displaced by nucleophiles, E and F represent the atoms necessary to complete a 5- to 7-membered heterocyclic ring, n is from 0 to 2, m is from 1 to 3, p is 0 or 1, x is 0 to 90 percent by weight and y is from 10 to 100 percent by weight of the polymer; and (b) a photographically useful fragment having appended thereto a nucleophilic moiety selected from the group consisting of ZNHR 2 , SO 2 NHR 2 and ##STR38## wherein R 2 is H or alkyl and Z is selected from the group consisting of alkylene, arylenealkylene, cycloalkylene or the atoms which, when taken together with NHR 2 , complete an N-containing heterocyclic group; said photographically useful fragment being covalently bonded to said polymeric mordant at the point where X was previously bonded to said polymeric mordant.