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    Mark-forming record material
    11.
    发明授权
    Mark-forming record material 失效
    标记记录材料

    公开(公告)号：US3663256A

    公开(公告)日：1972-05-16

    申请号：US3663256D

    申请日：1969-05-26

    Applicant: NCR CO

    Inventor： MILLER ROBERT E ,  BROCKETT BRUCE W

    IPC: B41M5/155 ,  C08G8/14 ,  C08G8/16 ,  C08G8/24 ,  B41M5/22

    CPC classification number: C08G8/16 ,  B41M5/155 ,  C08G8/14 ,  C08G8/24 ,  Y10T428/31964

    Abstract: This disclosure is directed to mark-forming record material containing two essential color-forming reactants which produce color upon contact with one another in the presence of a mutual liquid solvent wherein (A) one of said color-forming reactants is a phenolic resin containing at least 70 percent, by weight, of oil-soluble, amorphous, free-hydroxy-group-containing, roomtemperature-solid, thermoplastic polymeric condensates of formaldehyde and at least one p-substituted phenol of which at least 10 percent, by weight, is a p-substituted phenol wherein the p-substituent is electron-attracting (for example, a p-halosubstituent), said polymeric condensates containing at least three p-substituted phenol units per molecule, and wherein (B) the other essential color-forming reactant is a basic chromogenic material; for example, Crystal Violet Lactone. The polymeric condensates of (A) may be a mixture of polymer chains, each polymer chain having three or more of the same or different recurring p-substituted phenol units per molecule with methylene bridges between adjacent p-substituted phenol units. Where the polymer resin of (A) is not entirely composed of condensates having recurring phenolic units bearing p-electron-attracting substituents, the remaining recurring phenolic units bear pelectron-donating substituents; for example, p-alkyl substituents. A preferred form of mark-forming record material combines in the same polymeric resin, either in the same molecule or in a mixture of molecules, phenolic units bearing electron-attracting and donating substituents; for example, a phenolic resin having phalo groups as the electron-attracting substituents and p-alkyl groups as the electron donor substituents. By so blending electron-attracting and -donating groups, a ''''balanced'''' condensate (or mixture of condensates) having improved properties as a record material is achieved.

    Abstract translation: 本公开涉及标记形成记录材料，其含有两种必需成色反应物，其在相互液体溶剂存在下彼此接触时产生颜色，其中（A）一种所述着色反应物是含有 至少70重量％的含有至少10重量％的甲醛和至少一种对取代的苯酚的油溶性无定形含游离羟基的室温固体热塑性聚合物缩合物 是对位取代的苯酚，其中p取代基是吸电子的（例如，对卤代基取代基），所述聚合物缩合物每分子含有至少三个对取代的苯酚单元，并且其中（B）另一个 基本成色反应物是基本的显色材料; 例如，结晶紫内酯。 （A）的聚合物缩合物可以是聚合物链的混合物，每个聚合物链每分子具有三个或更多个相同或不同的重复的取代的苯酚单元，在相邻的取代的酚单元之间具有亚甲基桥。 当（A）的聚合物树脂不完全由具有带有p电子吸引取代基的重复酚单元的缩合物构成时，剩余的重复酚单元具有p-电子给予取代基; 例如，对烷基取代基。

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