@ A photographic element and its use in diffusion transfer photography are described which contain a novel polymeric mordant comprising recurring units having the formula
wherein
A represents recurring units derived from one or more an α,β-ethylenically unsaturated monomer;
B represents recurring units derived from a monomer containing at least two ethylenically unsaturated groups;
QN+ represents a moiety containing a quaternized nitrogen group;
R' represents an alkoxy group having from 1 to 8 carbon atoms or an alkylenedioxy group having from 1 to 4 carbon atoms, the group being appended to an aromatic group of A;
R2 represents an alkoxy group having from 1 to 8 carbon atoms or an alkylenedioxy group having from 1 to 4 carbon atoms, the group being appended to an aromatic group of QN+;
each n and m independently represents an integer from 0 to 5, with the proviso that the polymer contains recurring units having at leasttwo alkoxy groups or one alkylenedioxy group;
each R3 independently represents hydrogen or an alkyl group having from 1 to 6 carbon atoms;
X6 represents an anion;
x is from 0 to 80 mole percent;
y is from 20 to 100 mole percent; and
z is from 0 to 10 mole percent.
@描述了一种感光元件及其在扩散转移摄影中的应用,该感光元件含有一种新型
聚合物媒染剂,该媒染剂由具有以下式子的递归单元组成
其中
A 代表源自一种或多种 α、β-
乙烯基不饱和单体的递归单元;
B 代表源自含有至少两个
乙烯基不饱和基团的单体的递归单元;
QN+ 代表含有季
铵化
氮基团的分子;
R' 代表具有 1 至 8 个
碳原子的烷
氧基或具有 1 至 4 个
碳原子的亚烷基二
氧基,该基 附在 A 的芳香基团上;
R2 代表具有 1 至 8 个
碳原子的烷
氧基或具有 1 至 4 个
碳原子的亚烷基二
氧基,该基团与 QN+ 的芳香基团相连;
每个 n 和 m 独立地代表 0 至 5 的整数,但
聚合物包含至少有两个烷
氧基或一个亚烷基二
氧基的
重复单元;
每个 R3 独立地代表
氢或具有 1 至 6 个
碳原子的烷基;
X6 代表阴离子;
x 为 0 至 80 摩尔%;
y 为 20 至 100 摩尔%;以及
z 为 0 至 10 摩尔百分数。