Photographic emulsions
    1.
    发明授权
    Photographic emulsions 失效
    照相乳剂

    公开(公告)号:US5773207A

    公开(公告)日:1998-06-30

    申请号:US767464

    申请日:1996-12-16

    CPC分类号: G03C1/0051 C08G81/00 G03C1/07

    摘要: Tabular gain silver halide emulsions prepared in the presence of a block copolymer selected from the group consisting of: A--B, A--(B--A).sub.m, B--(A--B).sub.m, (A--B).sub.p --X, (B--A).sub.p --X, �A--(B--A).sub.m !.sub.p --X, and �B--(A--B).sub.m !.sub.p --X where m is an integer of 1 or more, p is an integer of 3 or more, X represents a p-valent linking group, A represents a poly(tetrahydrofuran) block, and B represents a poly(ethylene oxide) block.

    摘要翻译: 在含有AB,A-(BA)m,B-(AB)m,(AB)pX,(BA)pX的嵌段共聚物存在下制备的片状增益卤化银乳剂,[A-( BA)m] pX和[B-(AB)m] pX,其中m是1以上的整数,p是3以上的整数,X表示p价连接基,A表示聚(四氢呋喃 )嵌段,B表示聚(环氧乙烷)嵌段。

    Chemical sensitisation of silver halide emulsions
    5.
    发明授权
    Chemical sensitisation of silver halide emulsions 失效
    卤化银乳剂的化学增感

    公开(公告)号:US5604084A

    公开(公告)日:1997-02-18

    申请号:US545552

    申请日:1995-10-19

    IPC分类号: G03C1/04 G03C1/053 G03C1/09

    CPC分类号: G03C1/053 G03C1/04 G03C1/09

    摘要: A method of chemical sensitisation which comprises providing a silver halide emulsion containing negative-acting silver halide grains, and adding to said silver halide emulsion a sulphur releasing organic polymer having multiple sulphur releasing groups per polymer molecule. The polymer preferably has at least 10 sulphur releasing groups per molecule which may be selected from thiocarbonate, dithiocarbonate, trithiocarbonate, dithioester, thioamide, thiocarbamate, dithiocarbamate, thiouram, thiourea, dithiooxamide, thioketone and trisulphide.

    摘要翻译: 一种化学敏化方法,其包括提供含有负性卤化银颗粒的卤化银乳剂,并且在所述卤化银乳剂中加入每个聚合物分子具有多个释放硫基团的释放硫的有机聚合物。 聚合物优选每分子具有至少10个硫释放基团,其可以选自硫代碳酸酯,二硫代碳酸酯,三硫代碳酸酯,二硫代酯,硫代酰胺,硫代氨基甲酸酯,二硫代氨基甲酸酯,硫脲,硫脲,二硫代酰胺,硫酮和三硫化物。