Temperature history indicator and its manufacture
    13.
    发明公开
    Temperature history indicator and its manufacture 失效
    Temperaturablaufanzeiger和seine Herstellung。

    公开(公告)号:EP0244219A2

    公开(公告)日:1987-11-04

    申请号:EP87303797.2

    申请日:1987-04-29

    IPC分类号: G01K11/06 G01K3/04 G01K11/12

    摘要: A temperature history indicator includes a region 6 with a hydrophobic organic compound enclosed in microcapsules. If the temperature rises higher than a certain value, the compound melts and diffuses, causing a dye-precursor and a color developer to contact each other to irreversibly achieve color development. This color development system 7 is rendered operative when the high temperature rise continues for a predetermined time period. The top of the color development system is coated with a transparent material 11 with a bonding agent 8 arranged so as neither to break those chemical compositions which cause the color development nor to lower their color developing function.

    摘要翻译: 温度历史指示器包括具有封闭在微胶囊中的疏水性有机化合物的区域6。 如果温度升高到一定值以上,则化合物熔化并扩散,使染料前体和显色剂彼此接触,从而不可逆地实现显色。 当高温上升持续预定时间段时,该显色系统7可操作。 彩色显影系统的顶部涂覆有透明材料11,粘合剂8布置成既不破坏引起显色的化学组成也不降低其显色功能。

    Pressure sensitive recording unit
    15.
    发明公开
    Pressure sensitive recording unit 失效
    压敏记录集。

    公开(公告)号:EP0055847A1

    公开(公告)日:1982-07-14

    申请号:EP81110736.6

    申请日:1981-12-23

    IPC分类号: B41M5/12

    摘要: Disclosed is a pressure sensitive recording unit which comprises a single base web sheet and a methine-type dyestuff and an organic oxidizing compound both supported on the single base web sheet, or a combination of first and second base web sheets and the methine-type dyestuff and organic oxidizing compound supported individually on the first and second base web sheets. Such a recording unit includes for example a pressure sensitive recording unit formed in combination of (a) a back-coated topsheet (CB-sheet) making use of microscopic capsules containing a solution obtained by dissolving a methine-type dyestuff in a solvent having a high boiling point and (b) a front-coated undersheet (CF-sheet) carrying an organic oxidizing compound coated thereon. Also disclosed is a pressure sensitive recording unit which includes a base web sheet carrying thereon such a methme-type dyestuff together with a metal ion sequestering agent and/or alkanol amine.

    Microcapsule-containing water-base coating formulation and copying and/or recording material made therefrom
    20.
    发明公开
    Microcapsule-containing water-base coating formulation and copying and/or recording material made therefrom 失效
    含微孔水基底涂层配方和复制和/或记录材料

    公开(公告)号:EP0186516A3

    公开(公告)日:1988-01-13

    申请号:EP85309503

    申请日:1985-12-24

    IPC分类号: B41M05/12

    CPC分类号: B41M5/165

    摘要: The water-base coating formulation comprises as essential components (a) microcapsules which have a synthetic resin as a wall-forming material and (b) a reaction product obtained by polymerizing at least one water-soluble vinyl monomer (B) in the presence of a high polymer latex (A) having a glass transition point of 60°C or lower. The latex (A) and vinyl monomer (B) are used at a solid weight ratio of 3:97 - 90:10. The coating formulation can provide a microcapsule-coated layer having significantly-improved pressure resistance and frictional stability without need for a stilt, and can be applied successfully at a high speed. The coating formulation can form the basis of carbonless copying and/or recording paper for instance of self-contained character incorporating both a dye precursor and a color developer.