利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

44 条记录 (耗时 0.022 秒)

    Processes for the production of high-purity dimethyl 2, 6-naphthalenedicarboxylate and naphthalenedicarboxylic acid
    1.
    发明授权
    Processes for the production of high-purity dimethyl 2, 6-naphthalenedicarboxylate and naphthalenedicarboxylic acid 失效
    制备高纯度2,6-二甲酸二甲酯和萘二甲酸二甲酯的方法

    公开(公告)号：US6013831A

    公开(公告)日：2000-01-11

    申请号：US69815

    申请日：1998-04-30

    申请人： Hiroshi Machida ,  Fumiya Zaima ,  Kengi Nakaya ,  Kazuo Tanaka

    发明人： Hiroshi Machida ,  Fumiya Zaima ,  Kengi Nakaya ,  Kazuo Tanaka

    IPC分类号： C07C51/265 ,  C07C67/08 ,  C07C67/52 ,  C07C67/48

    CPC分类号： C07C67/08 ,  C07C51/265 ,  C07C67/52

    摘要： A process for the production of high-purity dimethyl 2,6-naphthalenedicarboxylate, which comprises esterifying 2,6-naphthalenedicarboxylic acid obtained by liquid phase oxidation of 2,6-dialkylnaphthalene with molecular oxygen in the presence of an oxidation catalyst, with methanol and then purifying a crude ester formed by the esterification, the crude ester being purified in the presence of an aromatic hydrocarbon as a solvent, in which impurities contained in a reaction product obtained by the esterification of 2,6-naphthalenedicarboxylic acid prepared by the liquid phase oxidation of 2,6-dialkylnaphthalene are effectively removed with simple procedures, oxidation catalyst metals are recovered, a crystal of naphthalenedicarboxylic acid formed by the oxidation of dialkylnaphthalene and/or its oxide derivative can be easily separated, and the oxidation catalyst to be brought into the step of producing dimethyl naphthalenedicarboxylate is recovered in the process of the production of naphthalenedicarboxylic acid and effectively used in the process of the production of naphthalenedicarboxylic acid.

    摘要翻译： 一种制备高纯度2,6-萘二甲酸二甲酯的方法，其包括在氧化催化剂存在下，通过用分子氧将2,6-二烷基萘液相氧化得到的2,6-萘二羧酸与甲醇和 然后纯化通过酯化形成的粗酯，粗酯在作为溶剂的芳族烃存在下纯化，其中通过由液相制备的2,6-萘二甲酸酯化得到的反应产物中所含的杂质 通过简单的方法有效地除去2,6-二烷基萘的氧化，回收氧化催化剂金属，可以容易地分离通过二烷基萘和/或其氧化物衍生物的氧化形成的萘二甲酸的结晶，并将氧化催化剂 在生产n的过程中回收生产二甲基萘二甲酸二甲酯的步骤 邻苯二甲酸二羧酸，有效用于生产萘二羧酸的方法。

    Process for producing a hydrogenation product of an aromatic carboxylic acid
    2.
    发明授权
    Process for producing a hydrogenation product of an aromatic carboxylic acid 失效
    制备芳族羧酸的氢化产物的方法

    公开(公告)号：US06541662B2

    公开(公告)日：2003-04-01

    申请号：US10021430

    申请日：2001-12-19

    申请人： Hiroshi Machida ,  Ko Kedo ,  Fumiya Zaima

    发明人： Hiroshi Machida ,  Ko Kedo ,  Fumiya Zaima

    IPC分类号： C07C6109

    CPC分类号： C07C51/36 ,  C07C61/12 ,  C07C61/125 ,  C07C61/09

    摘要： A process for producing a hydrogenation product of aromatic carboxylic acid which comprises continuously producing the hydrogenation product of aromatic carboxylic acid by hydrogenating an aromatic carboxylic acid having a melting point of 250° C. or higher in a solvent in the presence of a solid catalyst, wherein the hydrogenation is conducted in a condition such that substantially the entire amount of the aromatic carboxylic acid of a raw material is dissolved in the solvent by recycling a portion of a reaction liquid taken out of a reactor into the reactor. An aromatic carboxylic acid having a high melting point and hardly soluble in solvents can be hydrogenated at a suitable reaction temperature in accordance with a continuous process without using a great amount of a solvent and the reaction product of the object compound can be produced very efficiently.

    摘要翻译： 一种芳族羧酸的氢化产物的制造方法，其特征在于，在固体催化剂存在下，通过在溶剂中氢化熔点为250℃以上的芳香族羧酸，连续制造芳香族羧酸的氢化物， 其特征在于，氢化反应是将从反应器中取出的反应液的一部分再循环到反应器中，将原料的芳香族羧酸的总量全部溶解在溶剂中的方式进行。 可以在不使用大量溶剂的情况下，根据连续方法在合适的反应温度下氢化不溶于溶剂的高熔点，并且可以非常有效地制备目标化合物的反应产物。

    Method of producing naphthalenedicarboxylic acid
    3.
    发明授权
    Method of producing naphthalenedicarboxylic acid 有权
    生产萘二甲酸的方法

    公开(公告)号：US06268528B1

    公开(公告)日：2001-07-31

    申请号：US09432783

    申请日：1999-11-03

    申请人： Hiroshi Machida ,  Fumiya Zaima ,  Masato Inari ,  Hiroshi Watanabe ,  Emiko Yokose

    发明人： Hiroshi Machida ,  Fumiya Zaima ,  Masato Inari ,  Hiroshi Watanabe ,  Emiko Yokose

    IPC分类号： C07C5116

    CPC分类号： C07C51/265 ,  C07C63/38

    摘要： Dialkylnaphthalene is oxidized to naphthalenedicarboxylic acid in a lower aliphatic carboxylic acid solvent in the presence of a catalyst comprising a cobalt compound, a manganese compound and a bromine compound having an atomic ratio of manganese to cobalt of 0.03 to 0.5. The catalyst is supplied to the oxidation reaction zone so that the total amount of cobalt and manganese is 0.025 to 0.1 gram atom based on 1 gram mol of the dialkylnaphthalene. An oxidation product slurry is subjected to solid-liquid separation when the concentration of the naphthalenedicarboxylic acid in the slurry is 8 to 30% by weight. The process prevents the by-production of benzotricarboxylic acid such as trimellitic acid, thereby drastically reducing the incorporation of heavy metal complexes with trimellitic acid into naphthalenedicarboxylic acid crystals. The process optionally includes the addition of a polymer flocculant, this forming crystal aggregates with a large particle size and facilitating the separation of the crystals from the mother liquor.

    摘要翻译： 在包含钴化合物，锰化合物和原子比为锰与钴的溴化合物的催化剂存在下，在低级脂族羧酸溶剂中将二烷基萘氧化成萘二羧酸为0.03〜0.5。 将催化剂供应到氧化反应区，使得钴和锰的总量基于1克摩尔的二烷基萘为0.025至0.1克原子。 当浆料中萘二甲酸的浓度为8〜30重量％时，氧化产物浆液进行固液分离。 该方法防止苯三甲酸如偏苯三酸的副产物，从而大大降低了与偏苯三酸的重金属络合物与萘二甲酸晶体的结合。 该方法任选地包括加入聚合物絮凝剂，这种形成晶体具有大粒径的聚集体并且有利于晶体与母液的分离。

    Process for producing 2,6-naphthalenedicarboxylic acid
    4.
    发明授权
    Process for producing 2,6-naphthalenedicarboxylic acid 失效
    2,6-萘二甲酸的制备方法

    公开(公告)号：US6018077A

    公开(公告)日：2000-01-25

    申请号：US48494

    申请日：1998-03-26

    申请人： Fumio Ohkoshi ,  Hiroshi Ogawa ,  Kazuo Tanaka ,  Masato Inari ,  Hiroshi Machida

    发明人： Fumio Ohkoshi ,  Hiroshi Ogawa ,  Kazuo Tanaka ,  Masato Inari ,  Hiroshi Machida

    IPC分类号： C07C51/265 ,  C07C51/16

    CPC分类号： C07C51/265

    摘要： A process for producing 2,6-naphthalenedicarboxylic acid comprising oxidizing 2,6-dimethylnaphthalene with a gas containing oxygen in a solvent comprising a lower aliphatic carboxylic acid in the presence of a catalyst comprising cobalt, manganese, and bromine, wherein the total amount of cobalt and manganese in the catalyst is 50 to 300 mg atom per 1 g mol of 2,6-dimethylnaphthalene, a ratio by g atom of manganese to cobalt in the catalyst is 20:1 to 4:1, and the oxidation is conducted at a temperature of 200 to 250.degree. C.; and a process as described above, wherein a mother liquor which is obtained from a slurry of a product of the oxidation via a step of solid-liquid separation is recyled to a step of oxidation after heat treatment at a temperature of 150.degree. C. or higher. In accordance with the processes, accumulation of substances which affect the oxidation adversely is prevented. Moreover, a large fraction of a mother liquor of oxidation can be recycled without decrease in the yield of the reaction, and the catalyst components and the solvent components in the mother liquor of oxidation can be utilized efficiently.

    摘要翻译： 一种2,6-萘二甲酸的制造方法，其特征在于，在包含钴，锰，溴的催化剂的存在下，在含有低级脂肪族羧酸的溶剂中，在含有氧的气体中，使2,6-二甲基萘氧化， 催化剂中的钴和锰在每1克摩尔2,6-二甲基萘中为50〜300mg原子，催化剂中锰与钴的原子比为20：1〜4：1，氧化反应在 温度为200〜250℃。 和如上所述的方法，其中将通过固液分离步骤的氧化产物的浆料获得的母液在150℃的温度下再热处理至氧化步骤，或 更高。 根据这些方法，可以防止影响氧化的物质的积累。 此外，大部分的氧化母液可以循环使用而不会降低反应的产率，并且可有效地利用氧化母液中的催化剂组分和溶剂组分。

    Method for producing high purity terephthalic acid
    5.
    发明授权
    Method for producing high purity terephthalic acid 有权
    生产高纯对苯二甲酸的方法

    公开(公告)号：US07262323B2

    公开(公告)日：2007-08-28

    申请号：US10574273

    申请日：2004-09-30

    申请人： Hideaki Fujita ,  Hiroshi Machida ,  Nobuo Namiki ,  Yoshio Waguri

    发明人： Hideaki Fujita ,  Hiroshi Machida ,  Nobuo Namiki ,  Yoshio Waguri

    IPC分类号： C07C51/16 ,  C07C17/093 ,  A61L9/00

    CPC分类号： C07C51/47 ,  C07C51/487 ,  Y02P20/52 ,  C07C63/26

    摘要： A method for producing high purity terephthalic acid wherein a slurry having an acetic acid solvent and, dispersed therein, crude terephthalic acid crystals which has been prepared by subjecting a p-alkyl benzene to a liquid phase oxidation in a solvent of acetic acid is continuously converted to a water slurry by the mother liquid exchange, and then the resultant water slurry is subjected to a hydrogenation treatment, which comprises introducing the above acetic acid slurry to a tower having a center axis having a plurality of agitating blades at the top thereof, to form a region having a high concentration of terephthalic acid crystals in the tower through the sedimentation of the terephthalic acid crystals, supplying the water for substitution to the bottom of the tower in such a manner to form an upward water flow while generating a revolving flow of the high concentration region by the rotation of the agitation blade, to thereby subject said terephthalic acid crystals and said upward water flow to a counter-flow contact, and taking out the acetic acid from a portion being upper than the supply port for the acetic acid slurry while withdrawing the terephthalic acid crystals having contacted with the upward water flow together with the water for substitution from the tower bottom. The above method allows the substitution of the acetic acid solvent of the acetic acid slurry with water, with a high substitution percentage.

    摘要翻译： 一种生产高纯度对苯二甲酸的方法，其中将具有乙酸溶剂和分散在其中的粗对苯二甲酸晶体的浆料在乙酸的溶剂中经由对烷基苯进行液相氧化而制备， 通过母液交换到水浆中，然后对所得水浆进行氢化处理，其包括将上述乙酸浆料引入到其顶部具有多个搅拌叶片的中心轴的塔上，至 通过对苯二甲酸晶体的沉降在塔中形成具有高浓度对苯二甲酸晶体的区域，将水替代为塔的底部，以形成向上的水流，同时产生 通过搅拌叶片的旋转而产生高浓度区域，从而使所述对苯二甲酸晶体和所述上部流动 ard水流动到逆流接触，并从乙酸浆料供应口上方的一部分取出乙酸，同时将与向上的水接触的对苯二甲酸晶体与水一起取出，以供替代 塔底。 上述方法允许乙酸溶剂的乙酸溶液用水替代，取代率高。

    Process for producing dimethyl 2,6-naphthalene-dicarboxylate
    7.
    发明授权
    Process for producing dimethyl 2,6-naphthalene-dicarboxylate 失效
    2,6-萘二甲酸二甲酯的制备方法

    公开(公告)号：US5436364A

    公开(公告)日：1995-07-25

    申请号：US263466

    申请日：1994-06-22

    申请人： Seiji Uchiyama ,  Hiroshi Machida ,  Rieko Nakano ,  Ryuji Hasemi

    发明人： Seiji Uchiyama ,  Hiroshi Machida ,  Rieko Nakano ,  Ryuji Hasemi

    IPC分类号： C07C67/08 ,  C07C69/76

    CPC分类号： C07C67/08

    摘要： A process for producing dimethyl 2,6-naphthalene-dicarboxylate by reacting 2,6-naphthalene-dicarboxylic acid with methanol which comprises effecting the reaction at 200.degree. to 350.degree. C. in the presence of trimethyl trimellitate as an essential solvent and optionally, at least one solvent selected from methyl benzoate, methyl toluate and dimethyl o-phthalate preferably by at least two-stage continuous reaction method. The above process is capable of enhancing the rate of esterification reaction and producing purified objective product in high yield for a long period of time in a stable operation without causing any operational trouble such as corrosion and clogging the production equipment.

    摘要翻译： 2,6-萘二甲酸与甲醇的反应生产2,6-萘二甲酸二甲酯的方法，该方法包括在偏苯三酸三甲酯作为必需溶剂存在下，在200-350℃下进行反应， 至少一种选自苯甲酸甲酯，甲基甲酸甲酯和邻苯二甲酸二甲酯的溶剂优选通过至少两步连续反应方法。 上述方法能够在稳定的操作中长时间提高酯化反应速率和高产率纯化的目标产物，而不会引起任何操作故障，例如腐蚀和堵塞生产设备。

    Apparatus and method for protecting fuel cell
    9.
    发明授权
    Apparatus and method for protecting fuel cell 有权
    燃料电池保护装置及方法

    公开(公告)号：US07442455B2

    公开(公告)日：2008-10-28

    申请号：US10623011

    申请日：2003-07-17

    申请人： Yasushi Kojima ,  Takashi Sasaki ,  Hiroshi Machida

    发明人： Yasushi Kojima ,  Takashi Sasaki ,  Hiroshi Machida

    IPC分类号： H01M8/12

    CPC分类号： H01M8/04679 ,  H01M8/04223 ,  H01M8/04228 ,  H01M8/04388 ,  H01M8/04395 ,  H01M8/04432 ,  H01M8/04462 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/04753 ,  H01M8/04783 ,  H01M8/0491 ,  H01M8/04992 ,  H01M8/241 ,  H01M8/2457

    摘要： A memory unit stores maps of predetermined determination threshold values for detection values detected by a hydrogen sensor according to an operating state of a fuel cell such as a difference in pressure between reaction gases at an anode and a cathode, supply pressure of the reaction gases, supply flow rate of the reaction gases and generated current of the fuel cell. A control unit obtains a predetermined determination threshold value from the memory unit based on the operating state of the fuel cell. Then, the detection value outputted from the hydrogen sensor and the determination threshold value obtained from the memory unit are compared, and in the event that the detection value is determined to exceed the determination threshold value, a predetermined protecting process is implemented for the fuel cell.

    摘要翻译： 存储单元根据燃料电池的操作状态存储由氢传感器检测的检测值的预定判定阈值的映射图，例如阳极和阴极之间的反应气体之间的压力差，反应气体的供给压力， 提供反应气体的流量和燃料电池的产生电流。 控制单元基于燃料电池的运行状态从存储器单元获得预定的确定阈值。 然后，比较从氢传感器输出的检测值和从存储器单元获得的判定阈值，并且在检测值被确定为超过判定阈值的情况下，对燃料电池进行预定的保护处理 。