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    Chromogenic compounds and the use thereof as color former in copying or recording materials
    1.
    发明授权
    Chromogenic compounds and the use thereof as color former in copying or recording materials 失效
    显色化合物及其在复制或记录材料中作为成色剂的用途

    公开(公告)号：US4444591A

    公开(公告)日：1984-04-24

    申请号：US351600

    申请日：1982-02-23

    申请人： Hajime Kawai ,  Katsuhiko Tsunemitsu ,  Yoshiharu Fujino ,  Yoji Shimizu

    发明人： Hajime Kawai ,  Katsuhiko Tsunemitsu ,  Yoshiharu Fujino ,  Yoji Shimizu

    IPC分类号： B41M5/145 ,  B41M5/327 ,  C07D493/10 ,  C07D497/10 ,  C09D3/00

    CPC分类号： H01L29/78 ,  B41M5/1455 ,  B41M5/3275 ,  C07D493/10

    摘要： Novel chromogenic fluoran compounds of the formula: ##STR1## wherein R.sub.1 is selected from the group consisting of alkyl radicals of from five to eight carbon atoms; R.sub.2 is selected from the group consisting of alkyl radicals of from one to eight carbon atoms; R.sub.3 is selected from the group consisting of hydrogen atom and lower alkyl radicals of from one to four carbon atoms; X.sub.1 and X.sub.2 are independently selected from the group consisting of hydrogen atom and lower alkyl radicals of from one to four carbon atoms, X.sub.3 is selected from the group consisting of hydrogen atom, lower alkyl radicals of from one to four carbon atoms, halogen atoms and trifluoromethyl radical; and n is an integer of a value of 1 or 2; providing that R.sub.1 does not represent an amyl radical when R.sub.2 is selected from the group consisting of alkyl radicals of from one to five carbon atoms, X.sub.1 and X.sub.2 are each a hydrogen atom, X.sub.3 is selected from the group consisting of hydrogen atom, lower alkyl radicals of from one to four carbon atoms and halogen atoms.

    摘要翻译： 新型的显色荧烷化合物，其分子式为：其中R 1选自5-8个碳原子的烷基; R2选自1-8个碳原子的烷基; R3选自氢原子和1-4个碳原子的低级烷基; X 1和X 2独立地选自氢原子和1至4个碳原子的低级烷基，X 3选自氢原子，1至4个碳原子的低级烷基，卤素原子和 三氟甲基; n为1或2的整数; 当R2选自1至5个碳原子的烷基时，R1不表示戊基，X1和X2各自为氢原子，X3选自氢原子，低级烷基 一至四个碳原子的基团和卤素原子。

    Chromogenic compounds
    2.
    发明授权
    Chromogenic compounds 失效
    显色化合物

    公开(公告)号：US4564679A

    公开(公告)日：1986-01-14

    申请号：US388935

    申请日：1982-06-16

    申请人： Yoshiharu Fujino ,  Hajime Kawai ,  Yasushi Nakai ,  Katsuhiko Tsunemitsu

    发明人： Yoshiharu Fujino ,  Hajime Kawai ,  Yasushi Nakai ,  Katsuhiko Tsunemitsu

    IPC分类号： B41M5/145 ,  B41M5/327 ,  C09B11/26 ,  C07D471/02

    CPC分类号： C09B11/26 ,  B41M5/145 ,  B41M5/327

    摘要： The chromogenic azaphthalide compounds of the invention are of the formula: ##STR1## wherein A is a pyridine ring; R.sub.1 is hydrogen atom or alkyl radicals of from one to 4 carbon atoms; X is hydrogen atom, alkyl radicals of from one to 2 carbon atoms or alkoxy radicals of from one to 2 carbon atoms; R.sub.2 is alkyl radicals of from one to 2 carbon atoms or phenyl radical; R.sub.3 is hydrogen atom or alkyl radicals of from one to 8 carbon atoms.These compounds are particularly suitable for use in providing high quality pressure- or heat-sensitive copying sheets.

    摘要翻译： 本发明的显色氮杂萘化合物具有下式：其中A是吡啶环; R1是氢原子或1-4个碳原子的烷基; X是氢原子，1至2个碳原子的烷基或1至2个碳原子的烷氧基; R2是1至2个碳原子的烷基或苯基; R3是氢原子或1至8个碳原子的烷基。 这些化合物特别适用于提供高质量的压敏或热敏复印纸。