Photographic element for color diffusion transfer process having a novel

Abstract

In a photographic element for the color diffusion transfer process including a neutralizing system for reducing the pH of an aqueous alkaline developing solution which comprises a neutralizing layer and a timing layer, wherein the timing layer is positioned on or under the neutralizing layer in direct or indirect contact therewith such that the aqueous alkaline developing solution reaches the neutralizing layer through the timing layer, the improvement which comprises the timing layer comprising a polymer latex which is produced by emulsion polymerization of each of at least one monomer selected from the group consisting of monomers of Group (A), at least one monomer selected from the group consisting of monomers of Group (B) and at least one monomer selected from the group consisting of monomers of Group (C), wherein said Group (A) monomers are represented by the following formula (I): ##STR1## wherein R represents a hydrogen atom or a methyl group; T represents a hydrogen atom or an aliphatic group; Q represents a --CH.sub.2 OCOR.sub.0 group, ##STR2## a --CH.sub.2 OR.sub.2 group, ##STR3## wherein R.sub.0 represents an aliphatic group or an aryl group; R.sub.1a and R.sub.1b, which may be the same or different, each represents an aliphatic group or R.sub.1a and R.sub.1b combine to form a ring; R.sub.2 represents a hydrogen atom or an aliphatic group; R.sub.3, R.sub.4, R.sub.5, R.sub.6 and R.sub.7, which may be the same or different, each represents a hydrogen atom or a --CH.sub.2 OR.sub.2 group provided that all of R.sub.3 to R.sub.7 do not represent hydrogen atoms at the same time; and W represents an atomic group necessary to form a ring together with the --N--CO-- linkage; and