Photographic coupler solvents comprising aromatic carboxylic esters such as phthalates and isophthalates having bulky or branched ester substituents are described for incorporation in photographic emulsions and elements. The solvents are preferably employed in the cyan layer to protect the cyan dye against ferrous ion reduction. The solvents also provide improvements in yellow dye stability to light, cyan dye stability in the dark and magenta dye stability to heat and light.
                            本文介绍了一种用于摄影乳剂和元素中的含有芳香
羧酸酯的光学
偶联剂溶剂,如
邻苯二甲酸酯和异苯二
甲酸酯,具有臃肿或分支酯基取代基。这些溶剂最好用于青色层,以保护青色
染料免受亚
铁离子还原的影响。这些溶剂还提供了改善黄色
染料对光的稳定性、青色
染料在暗处的稳定性和品红色
染料对热和光的稳定性。