| 摘要 |
<p>A photographic element and its use in diffusion transfer photography are described which contain a novel mordant comprising recurring units having the formula <CHEM> wherein A represents recurring units derived from one or more alpha , beta -ethylenically unsaturated monomers; R represents hydrogen or methyl; each R<1> independently represents hydrogen or an alkyl group of 1 to 4 carbon atoms; Q represents an alkyl, substituted alkyl, cycloalkyl, aryl or substituted aryl group; X<(-)> represents an anion; w is from 0 to 25 mole percent; x is from 30 to 90 mole percent; y is from 8 to 65 mole percent; and z is from 2 to 9 mole percent </p> |
