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    Method for preparing heteropolyacid catalyst and method for producing methacrylic acid
    4.
    发明授权
    Method for preparing heteropolyacid catalyst and method for producing methacrylic acid 失效
    制备杂多酸催化剂的方法和生产甲基丙烯酸的方法

    公开(公告)号：US06458740B2

    公开(公告)日：2002-10-01

    申请号：US09797683

    申请日：2001-03-05

    申请人： Hiroto Kasuga ,  Kaori Nakatani ,  Eiichi Shiraishi

    发明人： Hiroto Kasuga ,  Kaori Nakatani ,  Eiichi Shiraishi

    IPC分类号： B01J2719

    CPC分类号： C07C51/252 ,  B01J23/002 ,  B01J27/188 ,  B01J27/19 ,  B01J27/199 ,  B01J2523/00 ,  C07C57/04 ,  B01J2523/15 ,  B01J2523/17 ,  B01J2523/51 ,  B01J2523/55 ,  B01J2523/68

    摘要： A novel method for preparing a heteropolyacid catalyst containing a heteropolyacid composed of molybdophosphoric acid and/or molybdovanadophosphoric acid, or a salt of the heteropolyacid, is provided. The method comprises preparing an aqueous solution or aqueous dispersion which (1) contains the nitrogen-containing heterocyclic compound, nitrate anions and ammonium ions, (2) the ammonium ion content not exceeding 1.7 mols per mol of the nitrate anion content, and (3) the ammonium ion content not exceeding 10 mols per 12 mols of the molybdenum atom content by mixing raw materials containing the catalyst-constituting elements with the nitrogen-containing heterocyclic compound in the presence of water, drying and calcining the same. This heteropolyacid catalyst excels over conventional catalysts in performance, life and strength.

    摘要翻译： 提供了一种制备含有由钼磷酸和/或钼钒钒酸组成的杂多酸的杂多酸催化剂或杂多酸盐的新方法。 该方法包括制备（1）包含含氮杂环化合物，硝酸根阴离子和铵离子的水溶液或水分散体，（2）每摩尔硝酸根阴离子含量不超过1.7摩尔的铵离子含量，和（3 ）通过在水存在下将含有催化剂构成元素的原料与含氮杂环化合物混合，干燥并煅烧，铵离子含量不超过10摩尔/ 12摩尔钼原子含量。 这种杂多酸催化剂在性能，寿命和强度方面优于常规催化剂。

    Method for regenerating heteropolyacid catalyst and method for producing methacrylic acid
    6.
    发明授权
    Method for regenerating heteropolyacid catalyst and method for producing methacrylic acid 失效
    再生杂多酸催化剂的方法和生产甲基丙烯酸的方法

    公开(公告)号：US06673733B2

    公开(公告)日：2004-01-06

    申请号：US09824338

    申请日：2001-04-03

    申请人： Naohiro Fukumoto ,  Naomasa Kimura ,  Hiroto Kasuga ,  Eiichi Shiraishi

    发明人： Naohiro Fukumoto ,  Naomasa Kimura ,  Hiroto Kasuga ,  Eiichi Shiraishi

    IPC分类号： B01J3866

    CPC分类号： B01J38/485 ,  B01J27/188 ,  B01J27/285 ,  C07C51/252 ,  Y02P20/584 ,  C07C57/04

    摘要： The invention provides a method for regenerating with high efficiency a deteriorated catalyst of reduced activity, said catalyst originating from a heteropolyacid catalyst containing heteropolyacid formed of molybdophosphoric acid and/or molybdovanadophosphoric acid, or a salt thereof, to a heteropolyacid catalyst which exhibits approximately equivalent activity level to that of the fresh catalyst. Said method comprises mixing a deteriorated catalyst and a nitrogen-containing heterocyclic compound under the conditions whereunder ammonium ions and nitrate anions are present at such ratio that the amount of total ammonium ions per mol of total nitrate anions does not exceed 1.7 mols, drying the mixture and calcining the same.

    摘要翻译： 本发明提供了一种高效还原催化剂活性降低的催化剂的方法，所述催化剂源于含有由钼磷酸和/或钼钒酸或其盐形成的杂多酸的杂多酸催化剂或其盐，其表现出大致相等的活性 与新鲜催化剂的水平。 所述方法包括在以下条件下混合劣化的催化剂和含氮杂环化合物，其中铵离子和硝酸根阴离子存在的比例使得每一摩尔总硝酸根阴离子的总铵离子的量不超过1.7摩尔，干燥混合物 并煅烧相同。

    Method for preparing heteropolyacid catalyst and method for producing methacrylic acid
    7.
    发明授权
    Method for preparing heteropolyacid catalyst and method for producing methacrylic acid 失效
    制备杂多酸催化剂的方法和生产甲基丙烯酸的方法

    公开(公告)号：US06624326B2

    公开(公告)日：2003-09-23

    申请号：US10155987

    申请日：2002-05-29

    申请人： Hiroto Kasuga ,  Kaori Nakatani ,  Eiichi Shiraishi

    发明人： Hiroto Kasuga ,  Kaori Nakatani ,  Eiichi Shiraishi

    IPC分类号： C07C5116

    CPC分类号： C07C51/252 ,  B01J23/002 ,  B01J27/188 ,  B01J27/19 ,  B01J27/199 ,  B01J2523/00 ,  C07C57/04 ,  B01J2523/15 ,  B01J2523/17 ,  B01J2523/51 ,  B01J2523/55 ,  B01J2523/68

    摘要： A novel method for preparing a heteropolyacid catalyst containing a heteropolyacid composed of molybdophosphoric acid and/or molybdovanadophosphoric acid, or a salt of the heteropolyacid, is provided. The method comprises preparing an aqueous solution or aqueous dispersion which (1) contains the nitrogen-containing heterocyclic compound, nitrate anions and ammonium ions, (2) the ammonium ion content not exceeding 1.7 mols per mol of the nitrate anion content, and (3) the ammonium ion content not exceeding 10 mols per 12 mols of the molybdenum atom content by mixing raw materials containing the catalyst-constituting elements with the nitrogen-containing heterocyclic compound in the presence of water, drying and calcining the same. This heteropolyacid catalyst excels over conventional catalysts in performance, life and strength.

    摘要翻译： 提供了一种制备含有由钼磷酸和/或钼钒钒酸组成的杂多酸的杂多酸催化剂或杂多酸盐的新方法。 该方法包括制备（1）包含含氮杂环化合物，硝酸根阴离子和铵离子的水溶液或水分散体，（2）每摩尔硝酸根阴离子含量不超过1.7摩尔的铵离子含量，和（3 ）通过在水存在下将含有催化剂构成元素的原料与含氮杂环化合物混合，干燥并煅烧，铵离子含量不超过10摩尔/ 12摩尔钼原子含量。 这种杂多酸催化剂在性能，寿命和强度方面优于常规催化剂。

    Process for producing (meth)acrylic acid
    8.
    发明授权
    Process for producing (meth)acrylic acid 失效

    公开(公告)号：US06664416B2

    公开(公告)日：2003-12-16

    申请号：US10118112

    申请日：2002-04-06

    申请人： Michio Tanimoto ,  Hiroto Kasuga

    发明人： Michio Tanimoto ,  Hiroto Kasuga

    IPC分类号： C07C51235

    CPC分类号： C07C51/215 ,  C07C51/252 ,  C07C57/04

    摘要： The present invention produces (meth)acrylic acid in a high yield in a process for producing (meth)acrylic acid by subjecting at least one member selected from the group consisting of (meth)acrolein, propane, and isobutane to catalytic gas phase oxidation with molecular oxygen or a molecular-oxygen-containing gas. In addition, the present invention makes it possible to produce (meth)acrylic acid in a high yield and stably for a long time. The present invention provides a process for producing (meth)acrylic acid by catalytic gas phase oxidation reaction, which is characterized by allowing a reaction gas to contain a reducible compound.

    Polyacrylic acid (salt)-based water-absorbent resin and method for producing same
    9.
    发明申请
    Polyacrylic acid (salt)-based water-absorbent resin and method for producing same 审中-公开
    聚丙烯酸（盐）系吸水性树脂及其制造方法

    公开(公告)号：US20110034603A1

    公开(公告)日：2011-02-10

    申请号：US12936823

    申请日：2009-04-24

    申请人： Shinichi Fujino ,  Eri Nagasawa ,  Kunihiko Ishizaki ,  Hiroto Kasuga

    发明人： Shinichi Fujino ,  Eri Nagasawa ,  Kunihiko Ishizaki ,  Hiroto Kasuga

    IPC分类号： C08L33/02 ,  C08F220/06 ,  C08K5/09

    CPC分类号： C08F6/008 ,  A61F2013/530481 ,  A61L15/22 ,  A61L15/60 ,  C08F6/10 ,  C08F220/06 ,  C08J3/126 ,  C08J3/128 ,  C08J3/245 ,  C08J2333/02 ,  C08L33/02

    摘要： In order to realize, while preventing gelatification of a monomer not yet to be polymerized, a water-absorbent resin which is more stable in color over time and has a significant enhancement in a problem concerning surface color and an excellent absorption property, a method for producing a polyacrylic acid-based water-absorbent resin includes: a preparation step in which a monomer is prepared from acrylic acid including hydroxyacetone in an amount not larger than 300 mass ppm; a polymerization step in which the monomer is polymerized so that a hydrogel is obtained; and a drying step in which the hydrogel is dried. Also, a method of the present invention for producing polyacrylic acid-based water-absorbent resin includes: a preparation step in which a monomer is prepared from acrylic acid; a polymerization step in which the monomer is polymerized in presence of phenol so that a hydrogel is obtained; and a drying step in which the hydrogel is dried.

    摘要翻译： 为了在防止尚未聚合的单体的凝胶化的同时，实现随着时间的推移，颜色更稳定并且显着提高了表面颜色和吸收性优异的问题的吸水性树脂， 制备聚丙烯酸类吸水性树脂包括：制备步骤，其中单体由不大于300质量ppm的羟基丙酮的丙烯酸制备; 聚合步骤，其中单体聚合以获得水凝胶; 和干燥步骤，其中水凝胶被干燥。 此外，本发明的聚丙烯酸类吸水性树脂的制造方法还包括：由丙烯酸制备单体的制备工序; 聚合步骤，其中单体在苯酚存在下聚合以获得水凝胶; 和干燥步骤，其中水凝胶被干燥。

    Process for production of acrolein
    10.
    发明授权
    Process for production of acrolein 有权
    丙烯醛生产工艺

    公开(公告)号：US07683220B2

    公开(公告)日：2010-03-23

    申请号：US12225823

    申请日：2007-03-27

    申请人： Etsushige Matsunami ,  Tsukasa Takahashi ,  Hiroto Kasuga ,  Yoshitaka Arita

    发明人： Etsushige Matsunami ,  Tsukasa Takahashi ,  Hiroto Kasuga ,  Yoshitaka Arita

    IPC分类号： C07C45/32

    CPC分类号： B01J27/182 ,  B01J21/08 ,  B01J27/16 ,  B01J27/1806 ,  B01J27/187 ,  B01J35/002 ,  B01J37/0201 ,  B01J37/03 ,  C07C45/52 ,  C07C47/22

    摘要： There is provided a process for producing acrolein from glycerin, exhibiting a suppressed decrease in the yield of acrolein with time. In the process for producing acrolein by dehydrating glycerin in the presence of a catalyst containing a metal phosphate, one, or two or more, metal phosphates are used, which are selected from aluminum salts, zirconium salts, manganese salts, alkali metal salts (provided that the alkali metal is sodium, potassium, or cesium, and the ratio between the mole number (M) of the alkali metal and the mole number (P) of phosphoric acid (i.e., M/P ratio) in the metal phosphate is 2.0 or lower), alkali earth metal salts (provided that the ratio between the mole number (M) of the alkali earth metal and the mole number (P) of phosphoric acid (i.e., M/P ratio) in the metal phosphate is 1.0 or lower), and the like.

    摘要翻译： 提供了一种从甘油制备丙烯醛的方法，随着时间的推移，丙烯醛的收率下降。 在含有金属磷酸盐，一种或两种以上的催化剂存在下，通过脱水甘油来制备丙烯醛的方法中，使用选自铝盐，锆盐，锰盐，碱金属盐的金属磷酸盐（提供 碱金属是钠，钾或铯，碱金属的摩尔数（M）与磷酸的摩尔数（P）之比（M / P比）在金属磷酸盐中的比例为2.0 或更低）碱土金属盐（条件是金属磷酸盐中碱土金属的摩尔数（M）与磷酸的摩尔数（P）之比（即M / P比）之比为1.0或 较低）等。