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.

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。

公开(公告)号：US06784134B2

公开(公告)日：2004-08-31

申请号：US10100991

申请日：2002-03-20

申请人： Hiroto Kasuga ,  Eiichi Shiraishi

发明人： Hiroto Kasuga ,  Eiichi Shiraishi

IPC分类号： B01J27192

CPC分类号： C07C45/37 ,  B01J23/002 ,  B01J23/31 ,  B01J23/8876 ,  B01J23/8885 ,  B01J35/026 ,  B01J37/0009 ,  B01J2523/00 ,  C07C45/35 ,  C07C51/252 ,  Y10T428/2913 ,  Y10T428/2927 ,  C07C47/22 ,  C07C57/04 ,  B01J2523/13 ,  B01J2523/41 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/69 ,  B01J2523/842 ,  B01J2523/845 ,  B01J2523/847 ,  B01J2523/15

摘要： A catalyst suited for catalytic vapor-phase oxidation of isobutylene, t-butanol or propylene to produce respectively corresponding unsaturated aldehyde and unsaturated carboxylic acid is provided. Said catalyst consists of ring-formed shaped bodies composed of (i) a catalyst composition containing at least molybdenum and bismuth as the active ingredients and (ii) inorganic fibers. The catalyst excels in mechanical strength, can give the object products at high yield and shows little activity degradation with time.

摘要翻译： 提供了适用于异丁烯，叔丁醇或丙烯的催化气相氧化以产生分别相应的不饱和醛和不饱和羧酸的催化剂。 所述催化剂由环形成形体组成，所述环形成形体由（i）至少含有钼和铋作为活性成分的催化剂组合物和（ii）无机纤维组成。 该催化剂的机械强度优异，可以高产率地得到目标产物，随着时间的推移，活性降低。

公开(公告)号：US06878847B2

公开(公告)日：2005-04-12

申请号：US10827416

申请日：2004-04-20

申请人： Hiroto Kasuga ,  Eiichi Shiraishi

发明人： Hiroto Kasuga ,  Eiichi Shiraishi

IPC分类号： B01J23/88 ,  B01J23/00 ,  B01J23/16 ,  B01J23/31 ,  B01J23/887 ,  B01J23/888 ,  B01J35/02 ,  B01J37/00 ,  C07B61/00 ,  C07C27/14 ,  C07C45/35 ,  C07C45/37 ,  C07C47/22 ,  C07C51/23 ,  C07C51/25 ,  C07C57/05 ,  C07C51/16 ,  B01J21/18 ,  B01J23/40 ,  C07C51/235

CPC分类号： C07C45/37 ,  B01J23/002 ,  B01J23/31 ,  B01J23/8876 ,  B01J23/8885 ,  B01J35/026 ,  B01J37/0009 ,  B01J2523/00 ,  C07C45/35 ,  C07C51/252 ,  Y10T428/2913 ,  Y10T428/2927 ,  C07C47/22 ,  C07C57/04 ,  B01J2523/13 ,  B01J2523/41 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/69 ,  B01J2523/842 ,  B01J2523/845 ,  B01J2523/847 ,  B01J2523/15

摘要： A catalyst useful for catalytic vapor-phase oxidation of isobutylene, t-butanol or propylene to produce respectively corresponding unsaturated aldehyde and unsaturated carboxylic acid is provided. The catalyst consists of ring-formed shaped bodies composed of (i) a catalyst composition containing at least molybdenum and bismuth as the active ingredients and (ii) inorganic fibers. The catalyst excels in mechanical strength, can give the object products at high yield and shows little activity degradation with time.

摘要翻译： 提供了可用于异丁烯，叔丁醇或丙烯的催化气相氧化以产生分别相应的不饱和醛和不饱和羧酸的催化剂。 催化剂由以下组成的环形成形体组成：（i）至少含有钼和铋作为活性成分的催化剂组合物和（ii）无机纤维。 该催化剂的机械强度优异，可以高产率地得到目标产物，随着时间的推移，活性降低。

公开(公告)号：US06664206B2

公开(公告)日：2003-12-16

申请号：US09956896

申请日：2001-09-21

申请人： Hiroto Kasuga ,  Eiichi Shiraishi

发明人： Hiroto Kasuga ,  Eiichi Shiraishi

IPC分类号： B01J2634

CPC分类号： C07C51/377 ,  B01J23/002 ,  B01J27/199 ,  B01J27/285 ,  B01J38/06 ,  B01J2523/00 ,  C07C51/235 ,  Y02P20/584 ,  C07C57/04 ,  B01J2523/15 ,  B01J2523/17 ,  B01J2523/51 ,  B01J2523/55 ,  B01J2523/68

摘要： This invention provides a method of reactivating a catalyst for methacrylic acid production, which catalyst is used in production of methacrylic acid through vapor-phase oxidation of methacrolein or vapor-phase oxidative dehydrogenation of isobutyric acid, contains P and Mo, and exhibits reduced activity. The process comprises treating the catalyst, whose activity level has dropped (deteriorated catalyst), with a gas containing a nitrogen-containing heterocyclic compound (e.g., pyridine, piperidine, piperazine, quinoline).

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。

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。

公开(公告)号：US20100069583A1

公开(公告)日：2010-03-18

申请号：US12312202

申请日：2007-09-20

申请人： Hiroto Kasuga ,  Etsushige Matsunami ,  Tsukasa Takahashi

发明人： Hiroto Kasuga ,  Etsushige Matsunami ,  Tsukasa Takahashi

IPC分类号： C07C51/16 ,  B01J19/00 ,  C08F20/06

CPC分类号： C07C45/82 ,  C07C45/52 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04

摘要： There are provided a process, an apparatus, and an acrolein-containing composition, for producing acrylic acid from the acrolein-containing composition at a high yield. The process for producing acrylic acid includes a refinement step of removing phenol and/or 1-hydroxyacetone from an acrolein-containing composition and an oxidation step of oxidizing acrolein in the acrolein-containing composition after the refinement step to produce acrylic acid, and the apparatus to be used in the process includes a refiner to be used in the refinement step and an oxidation reactor for oxidizing acrolein to produce acrylic acid. The acrolein-containing composition is a composition having a (mass of phenol)/(mass of acrolein) ratio of 0.020 or lower and a (mass of 1-hydroxyacetone)/(mass of acrolein) ratio of 0.020 or lower.

摘要翻译： 提供了一种用于以高产率从含丙烯醛的组合物制备丙烯酸的方法，装置和含丙烯醛的组合物。 制备丙烯酸的方法包括从含丙烯醛的组合物中除去苯酚和/或1-羟基丙酮的精制步骤和在精制步骤之后在含丙烯醛的组合物中氧化丙烯醛以生产丙烯酸的氧化步骤，并且该装置 在该方法中使用的方法包括在精制步骤中使用的精制机和用于氧化丙烯醛以产生丙烯酸的氧化反应器。 含丙烯醛的组合物是具有（质量的苯酚）/（丙烯醛的质量）比为0.020以下和（质量的1-羟基丙酮）/（丙烯醛的质量）比为0.020以下的组合物。

公开(公告)号：US20100010260A1

公开(公告)日：2010-01-14

申请号：US12312801

申请日：2007-11-28

申请人： Hiroto Kasuga ,  Etsushige Matsunami ,  Masafumi Sugio

发明人： Hiroto Kasuga ,  Etsushige Matsunami ,  Masafumi Sugio

IPC分类号： C07C51/16

CPC分类号： C07C51/23 ,  C07C51/235 ,  C07C51/377 ,  C07C57/04

摘要： The present invention provides a process for producing acrylic acid from glycerin with a catalyst having a prolonged life. In the process for producing acrylic acid from glycerin, a molar ratio of oxygen to glycerin in a raw material gas is set to be not lower than 0.8 and not higher than 20.

摘要翻译： 本发明提供了一种由具有延长使用寿命的催化剂由甘油生产丙烯酸的方法。 在由甘油生产丙烯酸的方法中，将原料气体中的氧与甘油的摩尔比设定为不低于0.8且不高于20。

公开(公告)号：US08076509B2

公开(公告)日：2011-12-13

申请号：US12312801

申请日：2007-11-28

申请人： Hiroto Kasuga ,  Etsushige Matsunami ,  Masafumi Sugio

发明人： Hiroto Kasuga ,  Etsushige Matsunami ,  Masafumi Sugio

IPC分类号： C07C51/16

CPC分类号： C07C51/23 ,  C07C51/235 ,  C07C51/377 ,  C07C57/04

摘要： The present invention provides a process for producing acrylic acid from glycerin with a catalyst having a prolonged life. In the process for producing acrylic acid from glycerin, a molar ratio of oxygen to glycerin in a raw material gas is set to be not lower than 0.8 and not higher than 20.

摘要翻译： 本发明提供了一种由具有延长使用寿命的催化剂由甘油生产丙烯酸的方法。 在由甘油生产丙烯酸的方法中，将原料气体中的氧与甘油的摩尔比设定为不低于0.8且不高于20。