Cyan-forming phenol type colour couplers comprising in the 2-position of the phenol a benzamido group carrying on the benzene nucleus of the benzamido group at least one -Q-Rf group wherein Q is -0-, -S-, or -S02-, and Rf is a short-chain fluorine-containing group derived from hexafluoro- propyleneortrifluorochloroethylene.
These cyan-forming colour couplers can be incorporated in (a) red-sensitized silver halide emulsion layer(s) of a photographic multilayer colour element or in a non-light-sensitive colloid layer in water-permeable relationship with the red-sensitized emulsion layer(s).
成
氰型苯
酚类颜色耦合剂,在
苯酚的 2 位上含有一个苯甲酰胺基团,该苯甲酰胺基团的苯核上含有至少一个-Q-Rf 基团,其中 Q 是-0-、-S-或-S02-,Rf 是由
六氟丙烯衍生的短链含
氟基团。
这些青色形成色耦合剂可以加入摄影多层彩色元件的(a)红色感光卤化
银乳剂层中,或加入与红色感光乳剂层有透
水性关系的非感光胶体层中。