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    METHOD FOR INHIBITING THE DISCOLORATION OF METHYLENE- BISANILINE COMPOUNDS
    4.
    发明公开
    METHOD FOR INHIBITING THE DISCOLORATION OF METHYLENE- BISANILINE COMPOUNDS 有权
    VERFAHREN ZUR INHIBIERUNG DERVERFÄRBUNG冯甲基联苯

    公开(公告)号：EP1698612A1

    公开(公告)日：2006-09-06

    申请号：EP04807385.2

    申请日：2004-12-20

    申请人： IHARA CHEMICAL INDUSTRY CO., LTD.

    发明人： NAGASAWA, Mato, IHARA CHEMICAL INDUSTRY CO., LTD. ,  ATSUMI, Naoya, IHARA CHEMICAL INDUSTRY CO., LTD. ,  ICHIKAWA, Hirofumi, KUMIAI CHEMICAL IND. CO., Ltd.

    IPC分类号： C07C209/90 ,  C07C211/43

    CPC分类号： C07C209/90 ,  C07C211/50

    摘要： The present invention provides a method by which the discoloration of methylenebisaniline compounds can be inhibited even when they are stored at high temperatures for many hours. That is, the present invention provides a method for inhibiting the discoloration of methylenebisaniline compounds, characterized by adding a phosphine represented by the following general formula:

    (wherein R 3 is an optionally substituted aryl group or an optionally substituted alkyl group; p is 0, 1 or 2 and q is 1, 2 or 3, with the provisos that the sum of p and q is 3 and that when q is 2 or 3, R 3 s may be the same or different from each other) to a compound represented by the following general formula:

    (wherein R 1 and R 2 are each independently a halogen atom or a C1-C6 alkyl group; a and b are each independently an integer of 0 to 4; m and n are each independently an integer of 1 to 5, with the provisos that the sum of a and m and the sum of b and n are each 5 or less and that when a is 2 or more, R 1 s may be the same or different from each other and, when b is 2 or more, R 2 s may be the same or different from each other).

    摘要翻译： 本发明提供了一种方法，即使将其在高温下储存数小时也能够抑制亚甲基双苯胺化合物的变色。 也就是说，本发明提供一种抑制亚甲基双苯胺化合物变色的方法，其特征在于加入由以下通式表示的膦：（其中R 3为任选取代的芳基或任选取代的烷基; p为0， 1或2，q为1,2或3，条件是p和q的和为3，当q为2或3时，R 3可以彼此相同或不同）表示的化合物 由以下通式表示：（其中R 1和R 2各自独立地为卤素原子或C 1 -C 6烷基; a和b各自独立地为0至4的整数; m和n各自独立地为1的整数） 至5，条件是a和m之和与b和n之和各自为5以下，当a为2以上时，R 1可以相同也可以不同，b 为2以上，R 2可以相同也可以不同。

    solid xylenediamine in container, production method thereof, and method for storing xylenediamine
    5.
    发明公开
    solid xylenediamine in container, production method thereof, and method for storing xylenediamine 有权
    在einemBehälter的维尔法赫尔·赫斯特伦·冯·费斯汀·西兰迪安。

    公开(公告)号：EP1529773A1

    公开(公告)日：2005-05-11

    申请号：EP04105246.5

    申请日：2004-10-22

    申请人： MITSUBISHI GAS CHEMICAL COMPANY, INC.

    发明人： Amakawa, Kazuhiko c/o Mitsubishi Gas Chemical Co. ,  Tanaka, Kazumi c/o Mitsubishi Gas Chemical Co.

    IPC分类号： C07C209/90 ,  C07C211/27

    CPC分类号： C07C209/90 ,  Y10T428/13 ,  Y10T428/1352 ,  C07C211/27

    摘要： A solid xylylenediamine solidified in a container is extremely excellent in storage stability as compared with a liquid xylylenediamine, and is less degraded by discoloration even when stored in an atmosphere containing oxygen. By charging a liquid xylylenediamine into a container, solidifying the liquid xylylenediamine into a solid xylylenediamine in the container under cooling without delay after the charging, and storing the solid xylylenediamine in the container while maintaining the xylylenediamine in a solid state, the xylylenediamine is stored for a long period of time without causing deterioration of quality such as discoloration.

    摘要翻译： 在容器中固化的固体二甲苯二胺与液体苯二甲胺相比非常优异的保存稳定性，并且即使在含有氧的气氛中储存时也因变色而劣化。 通过将液体苯二甲胺装入容器中，在充电之后，将液态苯二甲胺固化在容器内的固体苯二甲胺中，无延迟地冷却，并将固体苯二甲胺储存在容器中，同时保持苯二甲胺为固体状态，将苯二甲胺储存在 长时间不会导致质量下降，如变色。

    Process for treating tertiary amines
    10.
    发明公开
    Process for treating tertiary amines 失效
    处理仲胺的方法

    公开(公告)号：EP0504628A3

    公开(公告)日：1993-01-27

    申请号：EP92103204.1

    申请日：1992-02-25

    申请人： ETHYL CORPORATION

    发明人： Smith, Kim Renae ,  Borland, James Ellwood ,  Sauer, Joe Dean

    IPC分类号： C07C209/90 ,  C07C209/82 ,  C07C213/10

    CPC分类号： C07C209/90

    摘要： A tert-amine which contains an acid-activated color body precursor is treated to prevent it or a derivative thereof, e.g., an amine oxide, betaine, or quaternary ammonium compound, from turning pink when exposed to acidic conditions by contacting it at an effective temperature with a discoloration inhibitor which is (1) an inorganic sulfite selected from alkali metal sulfites and bisulfites, (2) an alkanal containing at least two carbons, (3) an acetylalkylcarbinol, (4) an amido compound which contains a -CO.NH- group, (5) ammonium carbonate, (6) a dialkylacetal, or (7) ascorbic acid. Ambient temperatures are satisfactory for the treatments with the other discoloration inhibitors, but temperatures above 100°C are required when the discoloration inhibitor is an inorganic sulfite.

    摘要翻译： 处理含有酸活化的颜色体前体的叔胺，以防止其或其衍生物，例如氧化胺，甜菜碱或季铵化合物，当暴露于酸性条件时，通过将其与有效的 （1）选自碱金属亚硫酸盐和亚硫酸氢盐的无机亚硫酸盐，（2）含有至少两个碳的链烷烃，（3）乙酰基烷基甲醇，（4）含有-CO的酰氨基化合物。 NH-基，（5）碳酸铵，（6）二烷基缩醛，或（7）抗坏血酸。 环境温度对于其他变色抑制剂的处理是令人满意的，但当变色抑制剂是无机亚硫酸盐时，需要高于100℃的温度。