申请人:Fuji Photo Film Co., Ltd.
公开号:US05017466A1
公开(公告)日:1991-05-21
A color-forming aminopyrimidine coupler represented by formula (I): ##STR1## where R.sub.1, R.sub.2, and R.sub.3 independently represent a hydrogen atom, a halogen atom, an alkoxy group, an aryloxy group, a heterocyclic-oxy group, an alkylthio group, an arylthio group, a heterocyclic-thio group, a substituted or unsubstitued amino group, a heterocyclic group bonding to the pyrimidine ring via a nitrogen atom thereof, an alkyl group or an aryl group; provided that at least one of R.sub.1, R.sub.2 and R.sub.3 is an unsubstituted or substituted amino group, and that when any one of R.sub.1, R.sub.2 or R.sub.3 contains a sulfonic acid group or a salt thereof, R.sub.1 , R.sub.2 or R.sub.3 contains at least one linear or branched alkyl group and that the total carbon atoms in the alkyl group(s) are to be more than 8; and R.sub.4 represents a hydrogen atom, a halogen atom, an alkoxy group, an aryloxy group, a heterocyclic-oxy group, an alkylthio group, an arylthio group, a heterocyclic-thio group, a substituted or unsubstituted amino group, or a heterocyclic group bonding to the pyrimidine ring via a nitrogen atom thereof. At least one coupler of formula (I) is incorporated into the photographic constitutive layer of a color silver halide photographic material, which gives a color image with high heat-fastness.
一种由公式(I)表示的色形成氨基嘧啶偶联剂:##STR1## 其中R.sub.1、R.sub.2和R.sub.3独立地表示氢原子、卤素原子、烷氧基、芳氧基、杂环氧基、烷硫基、芳硫基、杂环硫基、取代或未取代氨基、通过其氮原子与嘧啶环结合的杂环基、烷基或芳基;但至少有一个R.sub.1、R.sub.2和R.sub.3是未取代或取代的氨基,并且当R.sub.1、R.sub.2或R.sub.3中的任何一个含有磺酸基或其盐时,R.sub.1,R.sub.2或R.sub.3至少含有一个直链或支链烷基,而烷基中的总碳原子数应大于8;R.sub.4表示氢原子、卤素原子、烷氧基、芳氧基、杂环氧基、烷硫基、芳硫基、杂环硫基、取代或未取代氨基或通过其氮原子与嘧啶环结合的杂环基。将公式(I)的至少一种偶联剂并入彩色银卤片的构成层中,可获得具有高耐热性的彩色图像。