Photographic elements containing dithiolium salts
    10.
    发明授权
    Photographic elements containing dithiolium salts 失效
    含有苦味酸盐的摄影元素

    公开(公告)号:US3574624A

    公开(公告)日:1971-04-13

    申请号:US3574624D

    申请日:1968-02-08

    申请人: EASTMAN KODAK CO

    IPC分类号: G03C5/60 G03C7/02 G03C1/72

    CPC分类号: G03C7/02 G03C5/60

    摘要: PHOTOGRAPHIC ELEMENTS HAVING A SUPPORT COATED WITH A LIGHT-SENSITIVE LAYER INCLUDING A BLEACHING AGENT AND A DITHIOLIUM SALT WHICH, UPON EXPOSURE. THE SULFUR ATOMS OF THE DITHIOLIUM SALT NUCLEUS CAN HAVE EITHER A 1,2- OR A 1,3-RELATIONSHIP, AND ALL CARBON ATOMS IN THE NUCLEUS CAN BE SUBSTITUTED WITH SUCH GROUPS AS HYDROGEN ATOMS, ALKYL RADICALS, AMINO RADICALS, MONO- OR POLYCYCLIC ARYL RADICALS AND OXYGEN- OR SULFUR-CONTAINING HETEROCYCLIC RADICALS. ADDITIONALLY, THE DITHIOLIUM NUCLEUS CAN FORM PART OF A FUSED RING AROMATIC STRUCTURE IN WHICH ANY OR ALL OF THE RINGS CAN BE SUBSTITUTED WITH ANY OF THE ABOVE-NOTED SUBSTITUENTS. THE BLEACHING AGENT IS A COMPOUND HAVING A THIOCARBONYL GROUP SUCH AS A THIOUREA COMPOUND.