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143 条记录 (耗时 0.03 秒)

    N,N'-bis(p-hydroxymethylphenyl)benzidine compounds and method for preparing the same
    133.
    发明授权
    N,N'-bis(p-hydroxymethylphenyl)benzidine compounds and method for preparing the same 失效
    N，N'-双（对羟甲基苯基）联苯胺化合物及其制备方法

    公开(公告)号：US5476968A

    公开(公告)日：1995-12-19

    申请号：US293924

    申请日：1994-08-22

    申请人： Akira Imai ,  Katsumi Nukada

    发明人： Akira Imai ,  Katsumi Nukada

    IPC分类号： C07C213/00 ,  C07C215/68 ,  C07C217/92 ,  G03G5/06 ,  C07C223/06 ,  C07C211/54 ,  C07C211/56

    CPC分类号： C07C217/92 ,  C07C215/68

    摘要： A N,N'-bis(p-hydroxymethylphenyl)benzidine compound having the following formula (I): ##STR1## wherein R.sub.1 represents a hydrogen atom, a methyl group or a methoxy group; R.sub.2 represents an alkyl group having one to four carbon atoms, a methoxy group or an ethoxy group; and R.sub.3 represents a hydrogen atom or a methyl group, is intended to be used as a charge transporting material of an electrophotographic photoreceptor. A method for preparing the compound includes formylating a N,N'-diphenylbenzidine derivative having the following formula (II): ##STR2## by the conventional Viismeier reaction to obtain a N,N'-bis(p-formylphenyl) benzidine derivative of the following formula (III): ##STR3## and reducing the derivative with a boron hydride salt or an aluminum hydride salt.

    摘要翻译： 具有下式（I）的N，N'-双（对羟甲基苯基）联苯胺化合物：其中R 1表示氢原子，甲基或甲氧基; R2表示碳原子数1〜4的烷基，甲氧基或乙氧基; R3表示氢原子或甲基时，用作电子照相感光体的电荷输送材料。 制备该化合物的方法包括通过常规的Viismeier反应来形成具有下式（II）的N，N'-二苯基联苯胺衍生物：II（II），得到N，N'-双（对甲酰基苯基）联苯胺 衍生物的下式（III）：（III）并用硼氢化物盐或氢化铝盐还原衍生物。

    Electrophotographic photoreceptor
    135.
    发明授权
    Electrophotographic photoreceptor 失效
    电子照相感光体

    公开(公告)号：US5445909A

    公开(公告)日：1995-08-29

    申请号：US88577

    申请日：1993-07-09

    申请人： Yutaka Akasaki ,  Katsuhiro Sato ,  Katsumi Nukada

    发明人： Yutaka Akasaki ,  Katsuhiro Sato ,  Katsumi Nukada

    IPC分类号： G03G5/047 ,  G03G5/06 ,  G03G15/02

    CPC分类号： G03G5/047 ,  G03G5/0611 ,  G03G5/0614 ,  G03G5/0618 ,  G03G5/0657 ,  G03G5/0661 ,  G03G5/0696

    摘要： An electrophotographic photoreceptor high in sensitivity and contrast potential after light irradiation is disclosed. The photoreceptor comprises an electroconductive substrate having thereon a photoconductive layer comprising a charge generating layer comprising a charge generating material, and a charge transporting layer comprising a charge transporting material, wherein the ionization potential IPg of the charge generating material is lower than the ionization potential IPt of the charge transporting material, the difference therebetween is 0.35 eV or less, and the difference between the ionization potential IPg1 of the charge generating layer and the ionization potential IPt1 of the charge transporting layer is within the range of -0.1 to +0.1 eV.

    摘要翻译： 公开了一种在光照射后具有高灵敏度和对比度电位的电子照相感光体。 感光体包括导电性基体，其上具有光电导层，该光电导层包含电荷产生层，该电荷产生层包含电荷产生材料，以及电荷输送层，其包含电荷输送材料，其中电荷产生材料的电离势IPg低于电离势IPt 的电荷输送材料之间的差异在0.35eV以下，电荷产生层的电离电位IPg1与电荷输送层的电离电位IPt1之间的差在-0.1〜+ 0.1eV的范围内。

    Process for preparing hydroxymetal phthalocyanine pigment
    137.
    发明授权
    Process for preparing hydroxymetal phthalocyanine pigment 失效
    制备羟基金属酞菁颜料的方法

    公开(公告)号：US5360475A

    公开(公告)日：1994-11-01

    申请号：US131747

    申请日：1993-10-05

    申请人： Katsumi Nukada ,  Katsumi Daimon ,  Yasuo Sakaguchi

    发明人： Katsumi Nukada ,  Katsumi Daimon ,  Yasuo Sakaguchi

    IPC分类号： C09B67/50 ,  C09B67/12 ,  C09B67/16 ,  G03G5/06

    CPC分类号： G03G5/0696 ,  C09B67/0016 ,  C09B67/0019

    摘要： A process for preparing a hydroxymetal phthalocyanine pigment containing a central metal atom selected from aluminum, gallium, indium, silicon, germanium and tin and having a novel crystal form is disclosed, comprising treating a precursor of a hydroxymetal phthalocyanine pigment with an acid and treating the precipitated hydroxymetal phthalocyanine pigment with a solvent under an acidic condition. The resulting hydroxymetal phthalocyanine pigment includes hydroxygallium crystals showing distinct diffraction peaks at Bragg angles (2.theta..+-.0.2.degree.) of (1) 8.2.degree., 12.4.degree., 16.5.degree. and 26.3.degree. or (2) 6.8.degree., 12.5.degree. and 26.4.degree.. The resulting hydroxymetal phthalocyanine pigment exhibits high photosensitivity and excellent stability as a charge generating material of an electrophotographic photoreceptor.

    摘要翻译： 公开了一种制备含有选自铝，镓，铟，硅，锗和锡的中心金属原子并具有新晶体形式的羟基金属酞菁颜料的方法，包括用酸处理羟基金属酞菁颜料的前体并处理 在酸性条件下用溶剂沉淀羟基金属酞菁颜料。 得到的羟基金属酞菁颜料包括在（1）8.2°，12.4°，16.5°和26.3°或（2）6.8°，12.5°和26.4°的布拉格角（2θ+/- 0.2°）处显示出不同衍射峰的羟基镓结晶 DEG。 所得到的羟基金属酞菁颜料作为电子照相感光体的电荷产生材料表现出高的光敏性和优异的稳定性。