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    • 16. 发明授权
    • Article and method of its use for removal of iodide ion from
photographic processing solution with a fixing ability
    • 用于从具有固定能力的摄影处理溶液中除去碘离子的用途及其方法
    • US5219717A
    • 1993-06-15
    • US815788
    • 1992-01-02
    • Eric R. SchmittouGlenn T. PearceMichael R. RobertsJacob J. Hastreiter, Jr.
    • Eric R. SchmittouGlenn T. PearceMichael R. RobertsJacob J. Hastreiter, Jr.
    • G03C5/38G03C5/395
    • G03C5/3956Y10T428/249953
    • The invention is accomplished by providing an iodide ion absorbing method and article. The article is a composite article comprising a surfactant, an iodide absorbing medium, and a polymer that is permeable to iodide ion overlaying the iodide absorbing medium. In a preferred embodiment of the invention the polymer is an ionic polymer and the surfactant is an ionic surfactant with a charge opposite to that of the polymer. The surfactant can be incorporated in the absorbing medium, in the polymer, or it can overlay the polymer. In a preferred form of the invention, a substrate is coated with the iodide absorbing medium, a layer of an ionic polymer is overlaid on the absorbing medium, and a layer incorporating an ionic surfactant is overlaid onto the polymer. The ionic surfactant also may be placed in a layer between the polymer and the absorbing medium. A preferred absorbing medium is silver bromide. Preferred polymers are copolymers of methacrylate, methacrylamide, acrylate, or acrylamide monomers in which at least one monomer is cationic and the others are nonionic. Preferred surfactants are anionic surfactants, in particular, a mixture of sodium di- and tri-isopropylnaphthalenesulfonates sold commercially as Alkanol.RTM. XC, and a sodium sulfosuccinate diester sold commercially as Aerosol.RTM. OT.
    • 本发明通过提供碘离子吸收方法和制品来实现。 该制品是包含表面活性剂,碘化物吸收介质和覆盖碘化物吸收介质的碘离子透过性的聚合物的复合制品。 在本发明的优选实施方案中,聚合物是离子聚合物,表面活性剂是具有与聚合物相反的电荷的离子表面活性剂。 表面活性剂可以掺入吸收介质中,聚合物中,或者可以覆盖聚合物。 在本发明的优选形式中,用碘化物吸收介质涂覆基材,将一层离子聚合物覆盖在吸收介质上,并且将包含离子表面活性剂的层覆盖在聚合物上。 离子表面活性剂也可以放置在聚合物和吸收介质之间的层中。 优选的吸收介质是溴化银。 优选的聚合物是甲基丙烯酸酯,甲基丙烯酰胺,丙烯酸酯或丙烯酰胺单体的共聚物,其中至少一种单体是阳离子的,其它的是非离子的。 优选的表面活性剂是阴离子表面活性剂,特别是作为Alkanol TM XC以商品销售的二异丙基萘磺酸钠和三异丙基萘磺酸钠的混合物,以商品名为Aerosol TM OT销售的磺基琥珀酸二钠钠。