Layered electrophotographic recording medium comprising heterocyclic
nitrogen containing organic dye compounds
    5.
    发明授权
    Layered electrophotographic recording medium comprising heterocyclic nitrogen containing organic dye compounds 失效
    含有杂环氮的有机染料化合物的分层电照相记录介质

    公开(公告)号:US4481272A

    公开(公告)日:1984-11-06

    申请号:US554435

    申请日:1983-11-22

    CPC classification number: G03G5/0629

    Abstract: An electrophotographic recording medium which consists essentially of an electrically conductive base and a photosemiconductive double layer which comprises a first layer containing charge carrier-producing dyes, and a second layer containing one or more compounds which are charge carrier-transporting when exposed to light, wherein the charge carrier-producing dyes are those of the general formula I ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each hydrogen or a non-ionic substituent, X and Y are each the radical of a methylene-active compound, or of an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic amine or hydrazine, and Z is hydrogen, methyl or phenyl, and the production of this recording medium.

    Abstract translation: 一种电子照相记录介质,其基本上由导电基底和光电双层组成,该双层包含含有载电荷产生染料的第一层,以及含有一种或多种当暴露于光时是电荷载流子传输的化合物的第二层,其中 电荷载体产生染料是通式I的那些,其中R 1,R 2,R 3和R 4各自为氢或非离子取代基,X和Y各自为亚甲基活性化合物的基团,或 的脂族,脂环族,芳脂族,芳族或杂环胺或肼,Z是氢,甲基或苯基,以及该记录介质的制备。

    Manufacture of nylon by adding liquid diamine to aqueous polyamide
forming salt solution
    8.
    发明授权
    Manufacture of nylon by adding liquid diamine to aqueous polyamide forming salt solution 失效
    通过将液体二胺加入到聚酰胺形成盐水溶液中制造尼龙

    公开(公告)号:US4251653A

    公开(公告)日:1981-02-17

    申请号:US913748

    申请日:1978-06-08

    CPC classification number: C08G69/28

    Abstract: A process for the manufacture of nylons by heating an aqueous solution of a salt of an alkanedicarboxylic acid of 6 to 12 carbon atoms and a diamine of the formula NH.sub.2 RNH.sub.2, where R is alkylene of 6 to 12 carbon atoms or is a radical ##STR1## to a temperature at which a nylon is formed, under superatmospheric pressure and with removal of water. The solution used is an aqueous solution of from 75 to 90 percent strength by weight of a salt of a dicarboxylic acid and a diamine, which solution has been obtained by neutralizing a less concentrated salt solution, which contains an appropriate dissolved excess of the particular dicarboxylic acid, with the corresponding diamine. The nylons obtained are used for the manufacture of moldings.

    Abstract translation: 通过加热6至12个碳原子的烷二羧酸的盐的水溶液和式NH 2 R NH 2的二胺制备尼龙的方法,其中R是6至12个碳原子的亚烷基,或者是基团“ 达到形成尼龙的温度,在超大气压下和除去水。 所使用的溶液是二羧酸和二胺的重量百分比为75-90%重量的水溶液,该溶液是通过中和较不浓缩的盐溶液获得的,该盐溶液含有适当的溶解过量的特定二羧酸 酸,与相应的二胺。 获得的尼龙用于制造模制品。

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