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    Method for storing xylylenediamine
    2.
    发明授权
    Method for storing xylylenediamine 有权
    苯二甲胺的存储方法

    公开(公告)号：US07588721B2

    公开(公告)日：2009-09-15

    申请号：US11846873

    申请日：2007-08-29

    Applicant: Kazumi Tanaka ,  Kazuhiko Amakawa

    Inventor： Kazumi Tanaka ,  Kazuhiko Amakawa

    IPC: B01J19/06

    CPC classification number: C07C209/90 ,  Y10T428/13 ,  Y10T428/1352 ,  C07C211/27

    Abstract: 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.

    Abstract translation: 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储存稳定性，并且即使在含有氧气的气氛中储存时也因变色而劣化。 通过将液态苯二甲胺加入到容器中，在充电之后立即将液体苯二甲胺固化在容器内的固体苯二甲胺中，而不用延迟地将其冷却，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，将苯二甲胺存储 长时间不会导致质量下降，例如变色。

    Production method of xylylenediamine
    3.
    发明申请
    Production method of xylylenediamine 有权

    公开(公告)号：US20050004399A1

    公开(公告)日：2005-01-06

    申请号：US10788389

    申请日：2004-03-01

    Applicant: Kazuhiko Amakawa ,  Kazushi Gouroku

    Inventor： Kazuhiko Amakawa ,  Kazushi Gouroku

    IPC: C07C209/48 ,  C07C209/84 ,  C07C211/51 ,  C07

    CPC classification number: C07C209/48 ,  C07C211/27

    Abstract: In the method of the present invention, xylylenediamine is produced by a two-stage hydrogenation of a dicyanobenzene compound. In a first stage (a), the hydrogenation is performed until a conversion of nitrile groups reaches 90 mol % or higher and less than 99.9 mol %. In a second stage (b), the hydrogenation is further continued at temperatures 10° C. or more higher than in the step (a) until the conversion of nitrile groups reaches a level which is higher than that attained in the step (a) and equal to 99.5 mol % or more. In the present invention, a highly pure xylylenediamine containing a minimized amount of cyanobenzylamine is efficiently produced in a simple manner without needing a specific purification, and also without deteriorating the use efficiency of the catalyst while reducing the amount of the dicyanobenzene compound remaining not reacted and the generation of the intermediate cyanobenzylamine.

    Process for producing highly purified xyltlenediamine
    5.
    发明申请
    Process for producing highly purified xyltlenediamine 有权
    生产高纯度木聚糖二胺的方法

    公开(公告)号：US20090192334A1

    公开(公告)日：2009-07-30

    申请号：US11630648

    申请日：2005-06-22

    Applicant: Kazuhiko Amakawa

    Inventor： Kazuhiko Amakawa

    IPC: C07C209/48

    CPC classification number: C07C211/27 ,  C07C209/48 ,  C07C209/84 ,  C07C253/28 ,  C07C255/51

    Abstract: A method of producing xylylenediamine from xylene. In the method, xylene is converted into dicyanobenzene by ammoxidation. The produced dicyanobenzene is extracted into an organic solvent. The extract is then distilled to separate dicyanobenzene from the organic solvent. After added with a solvent, the separated dicyanobenzene is hydrogenated in a liquid phase. Finally, the hydrogenation product is purified by distillation to obtain a highly pure xylylenediamine. The method is conducted in a simple and low energy-consuming process.

    Abstract translation: 从二甲苯生产苯二甲胺的方法。 在该方法中，通过氨氧化将二甲苯转化为二氰基苯。 将生成的二氰基苯萃取到有机溶剂中。 然后将提取物蒸馏以从有机溶剂中分离出二氰基苯。 加入溶剂后，分离的二氰基苯以液相氢化。 最后，通过蒸馏纯化氢化产物，得到高纯度的苯二甲胺。 该方法在简单且低耗能的过程中进行。

    Solid xylylenediamine in container, production method thereof, and method for storing xylylenediamine
    6.
    发明申请
    Solid xylylenediamine in container, production method thereof, and method for storing xylylenediamine 有权
    容器中的固体苯二甲胺，其制备方法和苯二甲胺的存储方法

    公开(公告)号：US20070297943A1

    公开(公告)日：2007-12-27

    申请号：US11846873

    申请日：2007-08-29

    Applicant: Kazumi Tanaka ,  Kazuhiko Amakawa

    Inventor： Kazumi Tanaka ,  Kazuhiko Amakawa

    IPC: B01J19/06

    CPC classification number: C07C209/90 ,  Y10T428/13 ,  Y10T428/1352 ,  C07C211/27

    Abstract: 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.

    Abstract translation: 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储存稳定性，并且即使在含有氧气的气氛中储存时也因变色而劣化。 通过将液态苯二甲胺加入到容器中，在充电之后立即将液体苯二甲胺固化在容器内的固体苯二甲胺中，而不用延迟地将其冷却，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，将苯二甲胺存储 长时间不会导致质量下降，例如变色。

    Solid xylylenediamine in container, production method thereof, and method for storing xylylenediamine
    7.
    发明申请
    Solid xylylenediamine in container, production method thereof, and method for storing xylylenediamine 审中-公开
    容器中的固体苯二甲胺，其制备方法和苯二甲胺的存储方法

    公开(公告)号：US20050100694A1

    公开(公告)日：2005-05-12

    申请号：US10981660

    申请日：2004-11-05

    Applicant: Kazumi Tanaka ,  Kazuhiko Amakawa

    Inventor： Kazumi Tanaka ,  Kazuhiko Amakawa

    IPC: C07C211/27 ,  C07C209/90 ,  C07C211/09 ,  B65D1/00

    CPC classification number: C07C209/90 ,  Y10T428/13 ,  Y10T428/1352 ,  C07C211/27

    Abstract: 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.

    Abstract translation: 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，并且即使在含有氧气的气氛中储存时，也因变色而劣化。 通过将液态苯二甲胺加入到容器中，在充电之后立即将液体苯二甲胺固化在容器内的固体苯二甲胺中，而不用延迟地将其冷却，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，将苯二甲胺存储 长时间不会导致质量下降，例如变色。

    Method of purifying isophthalonitrile
    8.
    发明授权
    Method of purifying isophthalonitrile 有权

    公开(公告)号：US06509490B2

    公开(公告)日：2003-01-21

    申请号：US09953409

    申请日：2001-09-17

    Applicant: Susumu Otsuka ,  Takuji Shitara ,  Fumisada Kosuge ,  Kazuhiko Amakawa

    Inventor： Susumu Otsuka ,  Takuji Shitara ,  Fumisada Kosuge ,  Kazuhiko Amakawa

    IPC: C07C25334

    CPC classification number: C07C253/34 ,  C07C255/51

    Abstract: In a method for separating isophthalonitrile from a gas produced by causing m-xylene to react with ammonia and oxygen-containing gas in the presence of a catalyst, the gas is brought into contact with an organic solvent having a boiling point lower than that of isophthalonitrile; a liquid in which isophthalonitrile is trapped in a trapping step is distilled, to thereby recover isophthalonitrile and the organic solvent from the top of the column and separate at the bottom of the column impurities having boiling points higher than that of isophthalonitrile; and the organic solvent is recovered from the top of the rectification column and liquefied isophthalonitrile of high purity is recovered at the bottom of the column. Thus, loss of isophthalonitrile and plugging of a vacuum-evacuation system caused by isophthalonitrile migrating from a condensation system during distillation under reduced pressure can be prevented, and high-purity isophthalonitrile can be produced at high yield constantly for a long period of time.

    Purification of 1,3-bis(aminomethyl)cyclohexane by distillation
    10.
    发明授权
    Purification of 1,3-bis(aminomethyl)cyclohexane by distillation 有权
    通过蒸馏纯化1,3-双（氨基甲基）环己烷

    公开(公告)号：US06984758B2

    公开(公告)日：2006-01-10

    申请号：US11080548

    申请日：2005-03-16

    Applicant: Kazuhiko Amakawa ,  Kuniaki Muneyasu ,  Hiroshi Watanabe

    Inventor： Kazuhiko Amakawa ,  Kuniaki Muneyasu ,  Hiroshi Watanabe

    IPC: C07C211/00

    CPC classification number: C07C209/84 ,  C07C2601/14 ,  C07C211/18

    Abstract: A crude liquid containing 1,3-bis(aminomethyl)cyclohexane and a high-boiling component having a boiling point higher than that of 1,3-bis(aminomethyl)cyclohexane is distilled. By controlling the distillation conditions, the high-boiling component is prevented from entering into a distilled 1,3-bis(aminomethyl)cyclohexane and the content of a low-boiling component in the distilled 1,3-bis(aminomethyl)cyclohexane is minimized.

    Abstract translation: 蒸馏含有1,3-双（氨基甲基）环己烷和沸点高于1,3-双（氨基甲基）环己烷沸点的高沸点成分的粗液体。 通过控制蒸馏条件，可以防止高沸点组分进入蒸馏的1,3-双（氨基甲基）环己烷，蒸馏的1,3-双（氨基甲基）环己烷中低沸点成分的含量最小化 。

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