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    Method of preparing aromatic ether bisimides
    6.
    发明授权
    Method of preparing aromatic ether bisimides 失效
    制备芳香醚双酰亚胺的方法

    公开(公告)号：US5359084A

    公开(公告)日：1994-10-25

    申请号：US18993

    申请日：1993-02-18

    Applicant: Brent Dellacoletta ,  Roy R. Odle

    Inventor： Brent Dellacoletta ,  Roy R. Odle

    IPC: C07D209/48 ,  C07D403/12

    CPC classification number: C07D209/48

    Abstract: A method for preparing an aromatic ether bisimide is provided. The mixture obtained from reacting a substituted phthalimide with a metal salt of a hydroxy aromatic compound in a non-polar solvent is extracted with about 4% to about 6% by weight aqueous alkali hydroxide solution to remove the reaction's by-products and thus provide substantially pure aromatic ether bisimide. The method is particularly suitable for extracting aromatic ether bisimide by-products from a continuous process preparing aromatic ether bisimide.

    Abstract translation: 提供了一种制备芳族醚双酰亚胺的方法。 将取代的邻苯二甲酰亚胺与羟基芳族化合物的金属盐在非极性溶剂中反应获得的混合物用约4％至约6％重量的碱金属氢氧化物水溶液萃取以除去反应的副产物，从而基本上提供 纯芳香醚双酰亚胺。 该方法特别适用于从制备芳香醚双酰亚胺的连续方法中提取芳香族醚双酰亚胺副产物。

    Destruction of DNPI in an all nitric acid nitration process
    7.
    发明授权
    Destruction of DNPI in an all nitric acid nitration process 失效
    在所有硝酸硝化过程中破坏DNPI

    公开(公告)号：US4599429A

    公开(公告)日：1986-07-08

    申请号：US559574

    申请日：1983-12-08

    Applicant: Roy R. Odle

    Inventor： Roy R. Odle

    IPC: C07C201/16 ,  C07D209/48

    CPC classification number: C07D209/48

    Abstract: A means for decomposing undesirable by-products formed during the nitration by nitric acid only of N--C.sub.1 to C.sub.8 alkyl phthalimides which comprises elevating the temperature of the reaction mix during or following nitration and an improved nitration process incorporating said means.

    Abstract translation: 一种用于分解仅在硝酸中由N-C1至C8烷基苯二酰亚胺硝化形成的不希望的副产物的方法，其包括在硝化期间或之后提高反应混合物的温度，以及包含所述方法的改进的硝化过程。

    Process for preparing bis(ether anhydrides) using alkylamine derived bisimides having low melting temperatures
    9.
    发明授权
    Process for preparing bis(ether anhydrides) using alkylamine derived bisimides having low melting temperatures 失效
    使用具有低熔点的烷基胺衍生双酰亚胺制备双（醚酐）的方法

    公开(公告)号：US5536846A

    公开(公告)日：1996-07-16

    申请号：US250736

    申请日：1994-05-27

    Applicant: Brent Dellacoletta ,  Roy R. Odle ,  Thomas L. Guggenheim ,  Ronald A. Greenberg ,  James P. Barren ,  Joseph A. King ,  Sunita S. Baghel ,  Deborah A. Haitko ,  David G. Hawron

    Inventor： Brent Dellacoletta ,  Roy R. Odle ,  Thomas L. Guggenheim ,  Ronald A. Greenberg ,  James P. Barren ,  Joseph A. King ,  Sunita S. Baghel ,  Deborah A. Haitko ,  David G. Hawron

    IPC: C07D209/48 ,  C07D307/89 ,  C07D307/38

    CPC classification number: C07D209/48 ,  C07D307/89

    Abstract: A process for making bis(ether anhydrides) employs alkylamines having low melting temperatures thus allowing for novel intermediate process steps for preparing bis(ether anhydrides). The alkylamines have alkyl groups which contain at least three carbon atoms and have boiling temperatures in the range of 48.degree. to 250.degree. C. at atmospheric pressure. As a result of using these amines, liquid alkylamines now can be employed in the imidization process step. The N-alkyl nitrophthalimides prepared from the recovered imidization product according to this invention can now be purified using liquid/liquid extraction or vacuum distillation. The alkyl nitrophthalimides prepared according to this invention provide for displacement reactions which now can be run at a high solids level. Likewise, the exchange reaction can be run at a higher solids level, and thus achieves an efficiency level which is higher than conventional processes.

    Abstract translation: 制备双（醚酐）的方法使用具有低熔融温度的烷基胺，从而允许制备双（醚酐）的新的中间方法步骤。 烷基胺具有含有至少三个碳原子的烷基，并且在大气压下具有在48℃至250℃范围内的沸点温度。 作为使用这些胺的结果，液体烷基胺现在可用于酰亚胺化工艺步骤。 从本发明回收的酰亚胺化产物制备的N-烷基硝基邻苯二酰亚胺现在可以使用液/液萃取或真空蒸馏来纯化。 根据本发明制备的烷基硝基邻苯二酰亚胺提供了现在可以以高固体含量运行的置换反应。 同样，交换反应可以在更高的固体含量下进行，从而达到高于常规方法的效率水平。

    Nitration reactions with acid anhydride promoters
    10.
    发明授权
    Nitration reactions with acid anhydride promoters 失效
    与酸酐促进剂的硝化反应

    公开(公告)号：US5206429A

    公开(公告)日：1993-04-27

    申请号：US379665

    申请日：1989-07-13

    Applicant: Roy R. Odle

    Inventor： Roy R. Odle

    IPC: C07C205/57 ,  C07D307/89

    CPC classification number: C07C201/08 ,  C07D307/89 ,  Y02P20/582

    Abstract: An improved all nitric acid nitration process for the nitration of phthalic acid, phthalic anhydrides and derivatives thereof wherein the improvement consists essentially of employing a rate enhancing amount of a nitration promoting inorganic acid anhydride to enhance the rate of nitration.

    Abstract translation: 改进了用于邻苯二甲酸，邻苯二甲酸酐及其衍生物的硝化的所有硝酸硝化方法，其中改进主要由采用速率提高量的硝化促进无机酸酐来提高硝化速率。

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