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33 条记录 (耗时 0.011 秒)

    K-sheet type polarizers prepared from polyvinyl alcohol graft copolymers
    1.
    发明授权
    K-sheet type polarizers prepared from polyvinyl alcohol graft copolymers 失效
    由聚乙烯醇接枝共聚物制备的K型偏振片

    公开(公告)号：US3914017A

    公开(公告)日：1975-10-21

    申请号：US41254173

    申请日：1973-11-05

    申请人： POLAROID CORP

    发明人： BEDELL STANLEY F ,  TAYLOR LLOYD D

    IPC分类号： G02B5/30 ,  G02B27/28

    CPC分类号： G02B5/3033

    摘要： K-sheet type polarizers are prepared from polyvinyl alcohol graft copolymers, said graft copolymers being obtained by a redox type grafting procedure utilizing certain transition metal cation catalysts.

    摘要翻译： 由聚乙烯醇接枝共聚物制备K型偏振片，所述接枝共聚物通过使用某些过渡金属阳离子催化剂的氧化还原型接枝方法获得。

    Novel photographic products and processes
    2.
    发明授权
    Novel photographic products and processes 失效

    公开(公告)号：US3685991A

    公开(公告)日：1972-08-22

    申请号：US3685991D

    申请日：1971-03-08

    申请人： POLAROID CORP

    发明人： GRASSHOFF J MICHAEL ,  TAYLOR LLOYD D

    IPC分类号： G03C1/30 ,  G03C1/34 ,  G03C5/30 ,  G03C8/24 ,  G03C7/14 ,  G03C5/54

    CPC分类号： G03C5/30 ,  G03C1/30 ,  G03C1/34 ,  G03C8/243 ,  Y10S430/156

    摘要： THE PRESENT INVENTION RELATES TO AN INTEGRAL PHOTOGRAPHIC SILVER DIFFUSION TRANSFER FILM UNIT WHICH COMPRISES AN ADDITIVE MULTICOLOR SCREEN, SILVER PRECIPITATING NUCLEI, AND A LAYER COMPRISING PHOTOSENSITIVE SILVER HALIDE CRYSTALS, WHEREIN A SILVER HALIDE SOLVENT IS DISPOSED IN THE FILM UNIT IN A INACTIVE SPECIES, I.E., AS A SILVER HALIDE SOLVENT PROCURSOR, ADAPTED TO BE CONVERTED TO THE ACTIVE FORM BY THE APPLICATION OF A LIQUID PROCESSING COMPOSITION. PREFERABLY, A COMPOUND WHICH RELEASES A SILVER HALIDE SOLVENT IN THE PRESENCE OF ALKALI IS EMPLOYED, MORE PREFERABLY, A QUINONE-OR NAPHTHOQUINONE-METHIDE PRECURSOR CONTAINING THE SILVER SOLVENT MOIETY. IN A PARTICULARY PREFERRED EMBODIMENT, THE FILM UNIT ALSO CONTAINS A DEVELOPER OR DEVELOPER PRECURSOR.

    Tetrahydro 1,3-oxazinium compounds
    5.
    发明授权
    Tetrahydro 1,3-oxazinium compounds 失效
    四氢呋喃-1,3-氧化物化合物

    公开(公告)号：US3694439A

    公开(公告)日：1972-09-26

    申请号：US3694439D

    申请日：1970-08-03

    申请人： POLAROID CORP

    发明人： TAYLOR LLOYD D

    IPC分类号： C07D265/06 ,  G03C1/30 ,  C07D87/06

    CPC分类号： G03C1/301 ,  C07D265/06

    摘要： A compound of the formula

    WHEREIN X is an anion of an acid with an ionization constant of at least 10 2, has been found to provide a hardening function when utilized in conjunction with a polymeric material containing -SH, -NH2, and/or -OH functional groups.