A non-diffusible benzoylacetanilide photographic colour coupler having an aryloxy coupling-off group wherein (a) the benzoyl group comprises a substituent R1O- wherein R1 is an alicyclic or aliphatic, unsubstituted or substituted, branched or unbranched hydrocarbon group; and, (b) at least one of the benzoyl group and acetanilide group comprise a substituent that comprises a branched alkyl group containing at least 4 carbon atoms wherein the alkyl chains are uninterrupted or interrupted by hetero atoms or groups.
一种不可扩散的苯甲酰
乙酰苯胺照相彩色耦合剂,具有一个芳氧基耦合关闭基团,其中 (a) 苯甲酰基团包括一个取代基 R1O-,其中 R1 是脂环族或脂族、未取代或取代、支链或未支链烃基;(b) 苯甲酰基和
乙酰苯胺基团中至少有一个包含取代基,该取代基包含至少含 4 个碳原子的支链烷基,其中烷基链未被杂原子或杂基打断或打断。