Isolation of dinitroanthraquinone having a high content of .alpha.,.alpha.-
d
    97.
    发明授权
    Isolation of dinitroanthraquinone having a high content of .alpha.,.alpha.- d 失效
    具有高含量{60,{60-二硝基化合物的二硝基蒽醌的分离

    公开(公告)号:US4042604A

    公开(公告)日:1977-08-16

    申请号:US686365

    申请日:1976-05-14

    CPC classification number: C07C225/34

    Abstract: A process for the isolation of mixtures of 1,5-dinitroanthraquinone and 1,8-dinitroanthraquinone which have a high content of .alpha.,.alpha.'-dinitroanthraquinones by heating a suspension of the crude dinitroanthraquinone mixture in certain organic liquids at from 60.degree. to 200.degree. C until solution equilibrium has been set up, and separating the undissolved material from the solution. The undissolved material contains more than 90% and as a rule more than 95% by weight of 1,5-dinitroanthraquinone and 1,8-dinitroanthraquinone. The pure mixture of 1,5-dinitroanthraquinone and 1,8-dinitroanthraquinone may be used for the manufacture of dyes.

    Abstract translation: 通过在60°至200°的某些有机液体中加热粗二硝基蒽醌混合物的悬浮液,分离具有高α,α'-二硝基蒽醌含量的1,5-二硝基蒽醌和1,8-二硝基蒽醌的混合物的方法 直到溶液平衡已经建立,并将未溶解的材料与溶液分离。 未溶解的材料含有超过90%且通常超过95重量%的1,5-二硝基蒽醌和1,8-二硝基蒽醌。 1,5-二硝基蒽醌和1,8-二硝基蒽醌的纯混合物可用于制备染料。

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