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.
Druck- oder wärmeempfindliches Aufzeichnungsmaterial
申请人:CIBA-GEIGY AG
公开号:EP0477140A2
公开(公告)日:1992-03-25
Verbindungen der Formel
worin R, L, X und Y die in Anspruch 1 angegebenen Bedeutungen haben, eignen sich gut als UV-Absorber in druck- oder wärmeempfindlichen Aufzeichnungsmaterialien.
式中的化合物
其中 R、L、X 和 Y 的含义如权利要求 1 所述,非常适合用作压敏或热敏记录材料中的紫外线吸收剂。
Polymeric ultraviolet absorbers, photographic material including them, and process