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    Process for obtaining .alpha.,.alpha.'-dinitro anthraquinones of high purity
    343.
    发明授权
    Process for obtaining .alpha.,.alpha.'-dinitro anthraquinones of high purity 失效
    获得高纯度α，α'-二硝基蒽醌的方法

    公开(公告)号：US4307022A

    公开(公告)日：1981-12-22

    申请号：US52884

    申请日：1979-06-28

    Applicant: Maurice R. J. Vallette

    Inventor： Maurice R. J. Vallette

    IPC: C07C205/47 ,  C07C67/00 ,  C07C201/00 ,  C07C201/16 ,  C07C76/00

    CPC classification number: C07C201/16 ,  C07C205/47

    Abstract: The invention relates to a process for obtaining .alpha.,.alpha.'-dinitro-anthraquinones of high purity from crude mixtures obtained from the dinitration of anthraquinone. Such a mixture is placed in contact with an ester having a boiling point greater than 120.degree. C. derived from a mono- or di-carboxylic acid or phosphoric acid, at a temperature between 20.degree. and 200.degree. C. or more, then, after possible cooling, the insoluble material consisting essentially of the .alpha.,.alpha.'-dinitro-anthraquinones is separated.

    Abstract translation: 本发明涉及从由蒽醌的二硝化得到的粗混合物中获得高纯度的α，α'-二硝基蒽醌的方法。 将这样的混合物在20℃至200℃或更高的温度下与来自单羧酸或二羧酸或磷酸的沸点大于120℃的酯接触， 在可能的冷却之后，分离基本上由α，α'-二硝基蒽醌组成的不溶性物质。

    Process for the separation of nitrotoluene isomers
    344.
    发明授权
    Process for the separation of nitrotoluene isomers 失效
    硝基甲苯异构体分离方法

    公开(公告)号：US4270013A

    公开(公告)日：1981-05-26

    申请号：US86489

    申请日：1979-10-19

    Applicant: James W. Priegnitz ,  Arthur M. Landis

    Inventor： James W. Priegnitz ,  Arthur M. Landis

    IPC: C07C201/16 ,  C07C79/10

    CPC classification number: C07C201/16 ,  B01D17/0202

    Abstract: An adsorptive separation process for separating ortho or para-nitrotoluene from a feed mixture comprising the isomer to be separated and at least one other isomer of nitrotoluene, or for separating ortho and para-nitrotoluene from a mixture of all three isomers of nitrotoluene, which process comprises contacting the feed mixture with an adsorbent comprising a type X or type Y zeolite, whichever is appropriate, containing at the exchangeable cationic sites the appropriate cations, selectively adsorbing substantially all of the nitrotoluene to be separated to the substantial exclusion of the remaining isomers and thereafter recovering high-purity ortho, para or ortho and para isomers. A desorption step may be used to desorb the adsorbed isomers.

    Abstract translation: 用于从包含待分离异构体和硝基甲苯的至少一种其它异构体的进料混合物中分离邻位或对硝基甲苯的吸附分离方法，或用于从硝基甲苯的所有三种异构体的混合物中分离邻位和对硝基甲苯，该方法 包括使进料混合物与包含X型或Y型沸石的吸附剂接触，所述吸附剂在适当的可交换阳离子位置处含有适当的阳离子，选择性吸附待分离的所有硝基甲苯以基本排除剩余的异构体， 然后回收高纯度的邻位，对位或邻位和对位异构体。 解吸步骤可用于解吸所吸附的异构体。

    Process for the separation of ortho-chloronitrobenzene
    346.
    发明授权
    Process for the separation of ortho-chloronitrobenzene 失效
    邻氯硝基苯分离方法

    公开(公告)号：US4240986A

    公开(公告)日：1980-12-23

    申请号：US14656

    申请日：1979-02-23

    Applicant: James W. Priegnitz

    Inventor： James W. Priegnitz

    IPC: B01J20/18 ,  C07C67/00 ,  C07C201/00 ,  C07C201/16 ,  C07C205/12 ,  C07C79/12

    CPC classification number: C07C201/16

    Abstract: An adsorptive separation process for separating ortho-chloronitrobenzene from a feed mixture comprising ortho-chloronitrobenzene and at least one other isomer of chloronitrobenzene, which process comprises contacting the feed mixture with an adsorbent comprising a type X or type Y zeolite containing at the exchangeable cationic sites one or more cations selected from the group consisting of Groups IA, IIA and the transition metals of the Periodic Table of Elements, selectively adsorbing substantially all of the said ortho-chloronitrobenzene to the substantial exclusion of the remaining isomers and thereafter recovering high-purity ortho-chloronitrobenzene. A desorption step may be used to desorb the adsorbed ortho-chloronitrobenzene.

    Abstract translation: 用于从包含邻氯硝基苯和至少一种氯硝基苯的其它异构体的进料混合物中分离邻氯硝基苯的吸附分离方法，该方法包括使进料混合物与包含在可交换阳离子位点上含有的X型或Y型沸石的吸附剂接触 选自组IA，IIA和元素周期表的过渡金属的一种或多种阳离子，选择性吸附基本上所有的邻氯硝基苯，基本排除剩余的异构体，然后回收高纯度邻位 - 氯硝基苯。 解吸步骤可用于解吸吸附的邻氯硝基苯。

    Process for the separation of isomers of chloronitrobenzene
    347.
    发明授权
    Process for the separation of isomers of chloronitrobenzene 失效
    分离氯硝基苯异构体的方法

    公开(公告)号：US4234520A

    公开(公告)日：1980-11-18

    申请号：US30407

    申请日：1979-04-16

    Applicant: James W. Priegnitz

    Inventor： James W. Priegnitz

    IPC: C07C201/16 ,  C07C79/12

    CPC classification number: C07C201/16

    Abstract: An adsorptive separation process for separating the ortho, meta and para isomers of chloronitrobenzene from a feed mixture comprising said isomers, which process comprises contacting the feed mixture in a first adsorption stage with a certain selected adsorbent, selectively adsorbing therein substantially all of the ortho-chloronitrobenzene to the substantial exclusion of the other isomers and thereafter recovering high-purity orthochloronitrobenzene, passing the unadsorbed isomers to a second adsorption stage where they are contacted with another selected adsorbent, selectively adsorbing therein substantially all of one of the isomers and thereafter recovering in high purity that isomer as well as the isomer unadsorbed in the second stage. A desorption step may be used to desorb the adsorbed isomers in each stage.

    Abstract translation: 用于从包含所述异构体的进料混合物中分离氯硝基苯的邻位，间位和对位异构体的吸附分离方法，该方法包括在第一吸附阶段将进料混合物与某些选定的吸附剂接触，其中基本上所有的邻 - 氯化硝基苯，以实质排除其他异构体，然后回收高纯度邻氯硝基苯，将未吸附的异构体转移到第二吸附阶段，在那里与另一个选择的吸附剂接触，选择性地吸附其中基本上所有的异构体之一，然后高回收 纯度为异构体以及在第二阶段未被吸附的异构体。 解吸步骤可用于在每个阶段解吸吸附的异构体。

    Purification of meta-chloronitrobenzene
    349.
    发明授权
    Purification of meta-chloronitrobenzene 失效
    间氯硝基苯的纯化

    公开(公告)号：US4225518A

    公开(公告)日：1980-09-30

    申请号：US965805

    申请日：1978-12-04

    Applicant: James A. Cook, Jr.

    Inventor： James A. Cook, Jr.

    IPC: C07C201/16 ,  C07C79/12

    CPC classification number: C07C201/16

    Abstract: This invention relates to the treatment of an isomeric mixture of chloronitrobenzenes to provide a product higher in meta-chloronitrobenzene content, and lower in ortho-chloronitrobenzene and para-chloronitrobenzene content. In particular, a liquid mixtuure of ortho-, meta-, and para-chloronitrobenzene isomers containing a major amount of the meta isomer is solidified by dispersing the isomeric mixture in a partially miscible solvent at temperatures below the melting point of meta-chloronitrobenzene, the solvent and its temperature being selected so that the chloronitrobenzene isomers are sparingly soluble in the solvent. More particularly, a liquid isomeric mixture of ortho-, meta- and para-chloronitrobenzene containing a major amount of meta-chloronitrobenzene is dispersed in a lower alkylene glycol solvent that is at a temperature below the melting point of meta-chloronitrobenzene. A finely divided solid is collected, for example, by filtration, to provide a product enriched in meta-chloronitrobenzene.

    Abstract translation: 本发明涉及氯代硝基苯的异构体混合物的处理，以提供更高的间氯硝基苯含量的产物，邻氯硝基苯和对氯硝基苯含量较低。 特别地，含有主要量的间异构体的邻 - ，间 - 和对 - 氯硝基苯异构体的液体混合物通过在低于间氯硝基苯的熔点的温度下将异构体混合物分散在部分可混溶的溶剂中来固化， 溶剂和其温度被选择，使得氯硝基苯异构体微溶于溶剂。 更具体地，含有主要量的间氯硝基苯的邻 - ，间 - 和对 - 氯硝基苯的液体异构体混合物分散在低于间氯硝基苯熔点的低温亚烷基二醇溶剂中。 例如通过过滤收集细分的固体，以提供富含间氯硝基苯的产物。

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