Helichromic compounds and displays
    5.
    发明授权
    Helichromic compounds and displays 失效
    直链化合物和显示

    公开(公告)号:US4394070A

    公开(公告)日:1983-07-19

    申请号:US274184

    申请日:1981-06-22

    IPC分类号: C09K19/60 G02F1/13 C09K3/34

    CPC分类号: C09K19/60

    摘要: A composition for use in liquid crystal display devices, consisting essentially of a nematic liquid crystal material and a helichromic compound possessing both a chromophoric moiety and a helical ordering moiety. The helical ordering moiety is capable of helically ordering the mixture of liquid crystal material and helichromic compound. The helichromic compound can be utilized in conventional "guest-host" and "twist nematic" displays as well as in unique helichromic displays. When used in helichromic displays, the helichromic compounds eliminate after-image scattering and enable the display to be operated at reduced voltages.

    摘要翻译: 用于液晶显示装置的组合物,主要由向列型液晶材料和具有发色部分和螺旋排列部分的双重铬化合物组成。 螺旋排列部分能够螺旋排列液晶材料和直链氢化合物的混合物。 可以使用常规的“客体主体”和“扭转向列”显示器以及独特的直角重铬酸显示器。 当用于Helichromic显示器时,Helichromic化合物消除了后图像散射,并使得显示器能够以降低的电压工作。

    Thermolabile acutance dyes
    6.
    发明授权
    Thermolabile acutance dyes 失效
    耐热不溶性染料

    公开(公告)号:US4316984A

    公开(公告)日:1982-02-23

    申请号:US163528

    申请日:1980-06-27

    申请人: Harvey A. Brown

    发明人: Harvey A. Brown

    IPC分类号: G03C1/498 C07D215/12

    CPC分类号: G03C1/49854

    摘要: A particular class of novel nitro-substituted dyes has been found to act as effective, heat labile acutance dyes for photothermographic emulsions.

    摘要翻译: 已经发现特定类型的新型硝基取代的染料作为光热敏成像乳剂的有效的热不稳定的锐度染料。

    Thermographic system using naphthoylated leuco phenazine dyes
    7.
    发明授权
    Thermographic system using naphthoylated leuco phenazine dyes 失效
    使用萘甲酰基无色吩嗪染料的热成像系统

    公开(公告)号:US4563415A

    公开(公告)日:1986-01-07

    申请号:US662531

    申请日:1984-10-18

    IPC分类号: B41M5/323 C09B17/02 G03C1/52

    CPC分类号: C09B17/02 B41M5/323

    摘要: Thermographic composition comprising a leuco dye, a nitrate salt, and, optionally, an acid and stabilizing compound. The leuco dye contains a phenazine nucleus with naphthoyl substitutents on the 10-position and, optionally on one or both of the 3- and 7-positions through an amino group.In their oxidized form, the leuco dyes of this invention provide access to a range of red and magenta colors which exhibit greater stability when subjected to light and temperatures characteristic of the stage of overhead projectors than that exhibited by previously available leuco dyes of this color range.

    摘要翻译: 包含无色染料,硝酸盐和任选的酸和稳定化合物的热成像组合物。 无色染料含有在10-位具有萘甲酰基取代基的吩嗪核,并且任选地在3-和7-位上通过氨基。 在其氧化形式中,本发明的无色染料提供进入一系列红色和品红色,当经受与顶层投影仪的阶段相比的光和温度特性比该颜色范围的先前可用的无色染料显示出的更高的稳定性 。

    Electro-optical devices containing methine arylidene dyes
    8.
    发明授权
    Electro-optical devices containing methine arylidene dyes 失效
    含有次甲基亚芳基染料的电光装置

    公开(公告)号:US4105299A

    公开(公告)日:1978-08-08

    申请号:US786488

    申请日:1977-04-11

    IPC分类号: C09K19/60 G02F1/13 C09K3/34

    CPC分类号: C09K19/60

    摘要: Methine 4-nitro-arylidene dyes having certain substituents in the 2 position of the arylidene group are found to be pleochroic and to form guest-host combinations with dielectrically positive anisotropic nematic liquid crystals. These combinations are employed in electro-optical display devices.

    摘要翻译: 发现在亚芳基的2位具有某些取代基的甲基4-硝基 - 亚芳基染料是多色性的,并且与介电性各向异性向列型液晶形成客体 - 主体组合。 这些组合用于电光显示装置。