Silver halide photographic emulsions including dye sensitizers and supersensitizing or stabilizing amounts of a polymeric compound, and photographic elements, particularly radiographic elements, including said emulsions
申请人:MINNESOTA MINING AND MANUFACTURING COMPANY
公开号:EP0027259A1
公开(公告)日:1981-04-22
Object of the invention are photographic emulsions including silver halide grains dispersed in gelatin and at least a methine dye spectral sensitizer associated with said grains, including in association therewith a supersensitizing orstabil- izing amount of polymeric compound having an aminoallylidenmalononitrile moiety. The invention further relates to photographic elements, in particular radiographic elements, comprising said emulsions. According to the invention, said polymeric compound is obtained upon copolymerization of an allyl monomer, comprising said aminoallylidenmalononitrile moiety, with an ethylenically unsaturated monomer.
本发明的目的是照相乳剂,包括分散在明胶中的卤化银颗粒和至少一种与所述颗粒相关联的亚甲基染料光谱感光剂,包括与之相关联的具有氨基烯丙基丙二腈分子的超感光或稳定量的聚合化合物。本发明还涉及包含所述乳剂的照相元件,特别是射线照相元件。根据本发明,烯丙基单体与乙烯基不饱和单体共聚后可得到上述聚合物。