Process for the preparation of nitrosobenzenes
    5.
    发明授权
    Process for the preparation of nitrosobenzenes 失效
    制备亚硝基苯的方法

    公开(公告)号:US06274775B1

    公开(公告)日:2001-08-14

    申请号:US09707261

    申请日:2000-11-06

    IPC分类号: C07C20506

    摘要: The invention relates to a process for the preparation of nitrosobenzene from aromatic amines by oxidation with hydrogen peroxide in the presence of a catalyst based on compounds of tungsten and/or molybdenum without the addition of the organic solvents conventionally used.

    摘要翻译: 本发明涉及一种通过在基于钨和/或钼的化合物的催化剂的存在下用过氧化氢氧化从芳族胺制备亚硝基苯的方法,而不添加常规使用的有机溶剂。

    Dinitroalkyl aromatics polymerization retarders or inhibitors and methods for making and for using same
    6.
    发明授权
    Dinitroalkyl aromatics polymerization retarders or inhibitors and methods for making and for using same 失效
    二硝基烷基芳族化合物缓凝剂或抑制剂及其制备和使用方法

    公开(公告)号:US06339177B1

    公开(公告)日:2002-01-15

    申请号:US09577632

    申请日:2000-05-24

    申请人: Lee H. Bergman

    发明人: Lee H. Bergman

    IPC分类号: C07C20506

    摘要: A vinyl monomer inhibitor systems is disclosed which includes 2,6-dinitro-4-alkylated phenols and mixtures of 2,6-dinitro-4-alkylated phenols and 2,4-dinitro-6-alkylated phenols as well as vinyl monomer stabilized composition including an effective amount of the inhibitor systems. A method for the preparation and use is also disclosed where phenol is first alkylated under conditions that afford predominately monoalkylated phenols having a high para alkylation preference, followed by nitration of the alkylated phenols to form a dinitrated, monoalkylated product.

    摘要翻译: 公开了一种乙烯基单体抑制剂体系,其包括2,6-二硝基-4-烷基化酚和2,6-二硝基-4-烷基化酚和2,4-二硝基-6-烷基化酚的混合物以及乙烯基单体稳定化组合物 包括有效量的抑制剂体系。 还公开了一种制备和使用的方法,其中苯酚首先在主要具有高对烷基化优先性的单烷基化酚的条件下烷基化,然后硝化烷基化酚形成二硝基化的单烷基化产物。

    Bisazo compound and electrophotographic photoconductor using the same
    8.
    发明授权
    Bisazo compound and electrophotographic photoconductor using the same 失效
    双偶氮化合物和使用其的电子照相感光体

    公开(公告)号:US06333439B1

    公开(公告)日:2001-12-25

    申请号:US09609901

    申请日:2000-07-03

    申请人: Tomoyuki Shimada

    发明人: Tomoyuki Shimada

    IPC分类号: C07C20506

    CPC分类号: G03G5/0683

    摘要: An electrophotographic photoconductor has an electroconductive support, and a photoconductive layer formed thereon which contains at least one bisazo compound of formula (I): wherein Cp1 and Cp2 are each a coupler radical which may be the same or different. Further, these are disclosed a bisazo compound of formula (II), and raw materials thereof, that is, 1,4-bis[4-(4-nitrophenyl)-1,3-butadienyl]benzene of formula (V), 1,4-bis[4-(4-aminophenyl)-1,3-butadienyl]benzene of formula (VI) and a bis(diazonium salt) compound of formula (III).

    摘要翻译: 电子照相感光体具有导电性支持体和形成在其上的光电导层,其中含有至少一种式(I)的双偶氮化合物:其中Cp1和Cp2各自为可以相同或不同的成色剂基团。 此外,它们公开了式(II)的双偶氮化合物及其原料,即式(V)的1,4-双[4-(4-硝基苯基)-1,3-丁二烯基]苯,1 ,式(VI)的4-双[4-(4-氨基苯基)-1,3-丁二烯基]苯和式(III)的双(重氮盐)化合物。