| 摘要 |
<p>PURPOSE:To enhance contact performance with other layer even at low temperature, by using a laer formed from a specific polymer latex as the neutralization timing layer of photographic element for color diffusion transfer process. CONSTITUTION:A timing layer is made from a latex obtained by emulsion polymeriation of about 0.5 to 40 wt. % of monomer (A) such as N-hydroxy methyl acryl amide shown in formula I [R is H, methyl; T is H, aliphatic group; Q is -CH2OCOR0, formula II, -CH2OR2, formula III, formula IV (RO is aliphatic group, aryl; R1a, R1b are aliphatic groups, rings formed by coupling; R2 is H, aliphatic group; R3 to R7 are H, -CH2OR2; W is atom group necessary for forming a ring together with -N-CO-)], about 1 to 12 wt.% of polymerizing ethylene derivative unsaturated monomer (B) having free carboxylic acid group or phosphoric acid group such as arcylic acid and acryloyl oxy alkyl phosphate, and about 48 to 99 wt.% of monomer (B) which may be copolymerized with components A and B.</p> |
