发明授权
US4833070A Color photographic recording material containing a yellow DIR coupler 失效
含有黄色DIR耦合器的彩色照相材料

Color photographic recording material containing a yellow DIR coupler
摘要:
Remarkably high interimage and Eberhard effects are obtained when yellow DIR couplers corresponding to formuls I are added to multilayered color photographic recording materials, in particular to the green-sensitive or red-sensitive layers. These couplers can improve the sharpness and color reproduction. ##STR1## R.sup.1 denoted alkyl or aryl, R.sup.2 denotes alkyl with up to 18 carbon atoms,R.sup.3 denotes halogen, SO.sub.2 --R.sup.6, SO.sub.2 --NR.sup.7 --R.sup.8 or NH--SO.sub.2 --R.sup.6,R.sup.4 denoted H, alkyl or aryl.R.sup.5 denotes alkyl, cycloalkyl, alkinyl, aralkyl or aryl,R.sup.6 denotes alkyl or aryl,R.sup.7 denotes H or alkyl andR.sup.8 denoted H, alkyl, aryl, CO--R.sup.6 or ##STR2## and the total number of carbon atoms in R.sup.4 and R.sup.5 is not greater than 11.
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