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31. 发明授权

US07038081B2 Method for producing polyacrylic acid 有权
公开(公告)号：US07038081B2
公开(公告)日：2006-05-02
申请号：US10375140
申请日：2003-02-28
申请人： Yukihiro Matsumoto , Sei Nakahara , Kunihiko Ishizaki
发明人： Yukihiro Matsumoto , Sei Nakahara , Kunihiko Ishizaki
IPC分类号： C07C51/16
CPC分类号： C08F20/06
摘要： A method for producing polyacrylic acid includes a combined process of an acrylic acid production process and a polyacrylic acid production process. The acrylic acid production process includes the steps of catalytically oxidizing propylene and/or propane in a gaseous phase to generate reaction product, absorbing the reaction product in a solvent, and purifying acrylic acid from an acrylic acid aqueous solution containing the solvent by purification. The polyacrylic acid production process includes the step of utilizing heat medium recovered in the acrylic acid production process to purify polyacrylic acid from the acrylic acid aqueous solution or from acrylic acid.

32. 发明授权

US06966973B2 Apparatus and process for producing (meth)acrylic acid 有权
标题翻译：用于生产（甲基）丙烯酸的装置和方法
公开(公告)号：US06966973B2
公开(公告)日：2005-11-22
申请号：US10186569
申请日：2002-07-01
申请人： Sei Nakahara , Kazuhiko Sakamoto , Yukihiro Matsumoto , Kenji Sanada , Masatoshi Ueoka
发明人： Sei Nakahara , Kazuhiko Sakamoto , Yukihiro Matsumoto , Kenji Sanada , Masatoshi Ueoka
IPC分类号： B01D3/00 , B01D3/32 , B01J19/02 , C07B61/00 , C07C51/235 , C07C51/25 , C07C51/44 , C07C57/05 , C22C38/00 , B01V19/00
CPC分类号： C07C51/252 , B01D3/225 , B01D3/322 , B01J19/02 , B01J2219/00101 , B01J2219/0277 , C07C51/44 , Y10S159/15 , C07C57/04
摘要： The present invention provides an apparatus for producing (meth)acrylic acid and a process for producing (meth)acrylic acid with this apparatus wherein the apparatus enables the production of (meth)acrylic acid stably for a long period of time by effectively inhibiting the polymerization of (meth)acrylic acid in its production process (for example, in a reboiler). At least a part of the apparatus is made of a nickel-chromium-iron alloy with a molybdenum content of 3 to 20 mass %, but not including 3 mass %, or with a molybdenum content of 1 to 4 mass % and a copper content of 0.5 to 7 mass %.
摘要翻译：本发明提供一种用于生产（甲基）丙烯酸的装置和用于生产（甲基）丙烯酸的方法，该装置能够通过有效地抑制聚合来长时间稳定地生产（甲基）丙烯酸的（甲基）丙烯酸在其制备方法中（例如，在再沸器中）。该装置的至少一部分由钼含量为3〜20质量％，但不包括3质量％，或者含有1〜4质量％的钼含量和铜含量的镍 - 铬 - 铁合金为0.5〜7质量％。

33. 发明授权

US06736200B2 Heat-exchanging method for easily polymerizable compound 有权
标题翻译：易聚合化合物的换热方法
公开(公告)号：US06736200B2
公开(公告)日：2004-05-18
申请号：US09746916
申请日：2000-12-23
申请人： Kazuto Okazaki , Yukihiro Matsumoto , Sei Nakahara , Hiroo Iwato
发明人： Kazuto Okazaki , Yukihiro Matsumoto , Sei Nakahara , Hiroo Iwato
IPC分类号： F28D702
CPC分类号： B01J19/0013 , B01J2219/00094 , F28D9/04
摘要： The present invention provides a heat-exchanging method for an easily polymerizable compound which method effectively prevents polymerization in a heat exchanger to enable a long-term stable heat exchange when an easily polymerizable liquid compound (for example, acrylate ester) or an easily polymerizable compound-containing liquid (for example, aqueous acrylic acid solution) is heat-exchanged. A vertical spiral type heat exchanger with a fluid path space of not less than 6 mm is used as a heat exchanger to carry out the heat exchange under conditions where the average liquid flow rate is not less than 0.2 m/sec and where the liquid residence time is not more than 100 seconds.
摘要翻译：本发明提供了一种易于聚合的化合物的热交换方法，该方法有效地防止热交换器中的聚合，从而当容易聚合的液体化合物（例如丙烯酸酯）或易聚合化合物（例如丙烯酸水溶液）进行热交换。使用流体通道空间不小于6mm的垂直螺旋式热交换器作为热交换器，在平均液体流速不小于0.2m / sec的条件下进行热交换，其中液体停留时间不超过100秒。

34. 发明授权

US06649028B2 Column treating process and apparatus thereof 有权
标题翻译：柱处理工艺及其装置
公开(公告)号：US06649028B2
公开(公告)日：2003-11-18
申请号：US10226013
申请日：2002-08-22
申请人： Kazuhiko Sakamoto , Sei Nakahara , Masatoshi Ueoka , Naoto Kasaya
发明人： Kazuhiko Sakamoto , Sei Nakahara , Masatoshi Ueoka , Naoto Kasaya
IPC分类号： B01D302
CPC分类号： C07C51/47 , B01D3/143 , B01D3/225 , B01D3/322 , C07C67/54 , Y10S159/901 , Y10S203/09 , Y10S203/11 , Y10S203/90 , C07C57/04 , C07C69/54
摘要： The present invention provides a column treating method by use of a distillation column and so on, which method enables to effectively remove solid impurities such as precipitates and polymers contained or produced in a treating fluid, and to thereby stably operate the column treatment. Solid impurities in a treating fluid can be removed by carrying out: step (a) of drawing out the treating fluid from a drawing out outlet (16) at the column bottom of the treatment column (10) outside the treatment column (10), step (b) of removing solid impurities from the treating fluid, drawn out in step (a), by a strainer (40), and step (c) of returning the treating fluid, from which the solid impurities are removed in step (b), to a returning inlet (18) of the treatment column, with advancing physical and/or chemical treatment of the treating fluid in the treatment column (10).
摘要翻译：本发明提供了使用蒸馏塔等的柱处理方法，该方法能够有效地除去在处理液中含有或制造的析出物和聚合物等固体杂质，从而稳定地进行塔处理。处理液中的固体杂质可以通过以下步骤来除去：步骤（a）从处理塔（10）外部的处理塔（10）的塔底处的拉出出口（16）抽出处理流体，步骤（b）从步骤（a）中抽出的处理液中除去固体杂质，通过过滤器（40）和步骤（c）返回在步骤（b）中除去固体杂质的处理流体），经处理塔（10）中的处理流体的物理和/或化学处理的进行处理到处理塔的返回入口（18）。

35. 发明授权

US06300513B2 Method of stabilizing N-oxyl compounds in vinyl compounds 有权
标题翻译：稳定乙烯基化合物中N-氧基化合物的方法
公开(公告)号：US06300513B2
公开(公告)日：2001-10-09
申请号：US09729760
申请日：2000-12-05
申请人： Kazuhiko Sakamoto , Naoki Serata , Kouji Ueno , Sei Nakahara , Masatoshi Ueoka
发明人： Kazuhiko Sakamoto , Naoki Serata , Kouji Ueno , Sei Nakahara , Masatoshi Ueoka
IPC分类号： C07C6954
CPC分类号： C07C51/42 , C07C67/62 , C07C57/04 , C07C69/54
摘要： It intends to prevent the reduction in quantity with time of an oxyl compound in vinyl compounds. The quantity reduction of the N-oxyl compound is suppressed by causing an N-oxyl compound, N-hydroxy-2,2,6,6-tetramethylpiperidine compound and a 2,2,6,6-tetramethylpiperidine compound to co-exist in vinyl compounds.
摘要翻译：它意图防止乙烯基化合物中氧基化合物随时间的减少。通过使N-氧基化合物，N-羟基-2,2,6,6-四甲基哌啶化合物和2,2,6,6-四甲基哌啶化合物共存于N-酮基化合物中，可以抑制N-氧基化合物的数量减少乙烯基化合物。

36. 发明授权

US5785821A Process for the production of acrylic acid 失效
标题翻译：丙烯酸生产工艺
公开(公告)号：US5785821A
公开(公告)日：1998-07-28
申请号：US759219
申请日：1996-12-05
申请人： Kazuhiko Sakamoto , Sei Nakahara , Takahiro Takeda , Masatoshi Ueoka , Yohji Akazawa
发明人： Kazuhiko Sakamoto , Sei Nakahara , Takahiro Takeda , Masatoshi Ueoka , Yohji Akazawa
IPC分类号： C07C57/05 , C07C51/42 , C07C51/46 , C07C57/055 , C07C57/07 , B01D3/34
CPC分类号： C07C51/46
摘要： The present invention provides an improved process for production of acrylic acid by subjecting propylene and/or acrolein to catalytic gas-phase oxidation with a molecular oxygen-containing gas. In the process, the mixed gas obtained by the catalytic gas-phase oxidation is contacted with an aqueous collecting agent containing acrylic acid, acetic acid and a poorly-soluble-in-water solvent, to form an aqueous acrylic acid solution; and the aqueous acrylic acid solution is subjected to azeotropic distillation in the presence of a poorly-soluble-in-water solvent to remove by-products and obtain high-purity acrylic acid.
摘要翻译：本发明提供通过使丙烯和/或丙烯醛与含分子氧的气体进行催化气相氧化来生产丙烯酸的改进方法。在此过程中，将通过催化气相氧化获得的混合气体与含丙烯酸，乙酸和难溶于水的溶剂的含水收集剂接触，形成丙烯酸水溶液; 在难溶于水的溶剂的存在下，将丙烯酸水溶液进行共沸蒸馏，除去副产物，得到高纯度丙烯酸。

37. 发明授权

US09062140B2 Polyacrylic acid (salt) water-absorbent resin, production process thereof, and acrylic acid used in polymerization for production of water-absorbent resin 有权
标题翻译：聚丙烯酸（盐）吸水性树脂及其制造方法以及用于生产吸水性树脂的聚合中使用的丙烯酸
公开(公告)号：US09062140B2
公开(公告)日：2015-06-23
申请号：US11883929
申请日：2006-04-06
申请人： Hirotama Fujimaru , Kunihiko Ishizaki , Sei Nakahara
发明人： Hirotama Fujimaru , Kunihiko Ishizaki , Sei Nakahara
IPC分类号： C08F20/06 , C08F220/06 , A61L15/60 , C08F222/10 , C08K5/01 , C08K5/04
CPC分类号： C08F220/06 , A61L15/60 , C08F20/06 , C08F222/1006 , C08K5/01 , C08K5/04 , C08L33/02
摘要： An embodiment of the present invention allows for the production, with a high productivity, of a water-absorbent resin having an improved relationship between absorption capacity and water-soluble polymer, which are conflicting properties of the water-absorbent resin, being easily controlled for polymerization reaction, being of no odor, being less colored, and being of high absorption properties (high absorption capacity under load and high PPUP). In one embodiment of the present invention, a process for producing a water-absorbent resin by polymerizing an acrylic acid composition including acrylic acid and/or its salt, the process includes: (a) the step of carrying out radical polymerization of the acrylic acid composition to form a hydrogel crosslinked polymer; and (b) the step of drying the hydrogel crosslinked polymer by application of heat, the acrylic acid composition having an unpolymerizable organic compound content of 1 to 1000 ppm by weight, wherein the unpolymerizable organic compound has a solubility parameter of (1.0 to 2.5)×104(Jm−3)1/2.
摘要翻译：本发明的一个实施方案允许以高生产率生产具有吸收性能与吸水性树脂相互矛盾的吸水性聚合物之间关系改善的吸水性树脂，容易控制聚合反应，无异味，颜色较少，吸收性高（负载下的高吸收能力和高PPUP）。在本发明的一个实施方案中，通过使包含丙烯酸和/或其盐的丙烯酸组合物聚合来制备吸水性树脂的方法包括：（a）进行丙烯酸的自由基聚合的步骤组合物以形成水凝胶交联聚合物; 和（b）通过加热干燥水凝胶交联聚合物的步骤，所述丙烯酸组合物具有1-1000ppm重量的不可聚合有机化合物含量，其中不可聚合的有机化合物的溶解度参数为（1.0-2.5） ×104（Jm-3）1/2。

38. 发明授权

US07326810B2 Method for starting up reactor 有权
标题翻译：启动反应堆的方法
公开(公告)号：US07326810B2
公开(公告)日：2008-02-05
申请号：US09919024
申请日：2001-07-31
申请人： Harunori Hirao , Yukihiro Matsumoto , Sei Nakahara , Kunihiko Suzuki
发明人： Harunori Hirao , Yukihiro Matsumoto , Sei Nakahara , Kunihiko Suzuki
IPC分类号： C07C27/10 , C07C51/16
CPC分类号： C07B41/00 , C07C51/252 , C07C57/04
摘要： In the reaction of catalytic gas phase oxidation induced by the supply of at least a raw material to be oxidized and a molecular oxygen-containing gas to a reactor for catalytic gas phase oxidation, a method for starting up the reactor for catalytic gas phase oxidation is disclosed which is characterized by causing the raw material and the molecular oxygen-containing gas to pass a range in which the concentration of the raw material is less than the lower explosion limit of the raw material and the concentration of oxygen is not less than the limiting oxygen concentration, but excluding the concentration of the raw material of 0 vol. %. The method enables the reactor to be started up economically and safely by avoiding the explosion range induced by the composition of a raw material and a molecular oxygen-containing gas supplied to the reactor and decreasing the amount of a diluting gas to be supplied.
摘要翻译：在将至少要被氧化的原料供给的催化气相氧化和含有分子氧的气体引入用于催化气相氧化的反应器的反应中，用于启动催化气相氧化反应器的方法是其特征在于，使原料和含分子氧气体通过原料浓度小于原料的下限爆炸极限的范围，氧浓度不低于限定值氧浓度，但不包括原料浓度为0体积。％。该方法能够通过避免由供给到反应器的原料和含分子氧气体的组成引起的爆炸范围，减少供给的稀释气体的量，从而经济，安全地启动反应器。

39. 发明授权

US06676808B2 Method for starting up distilling column 有权
标题翻译：启动蒸馏塔的方法
公开(公告)号：US06676808B2
公开(公告)日：2004-01-13
申请号：US09871213
申请日：2001-05-31
申请人： Kei Hamamoto , Yukihiro Matsumoto , Sei Nakahara , Misao Inada
发明人： Kei Hamamoto , Yukihiro Matsumoto , Sei Nakahara , Misao Inada
IPC分类号： B01D334
CPC分类号： C07C51/46 , B01D3/322 , B01D3/4227 , C07C51/50 , Y10S203/07 , Y10S203/22 , C07C57/04
摘要： A method for starting up a distilling column destined to handle an easily polymerizing compound-containing solution characterized by supplying at the start of the operation of the distilling column a polymerization inhibitor to the bottom liquid of the distilling column having a temperature of not higher than 80° C. Further, by supplying a reflux liquid through the top of the distilling column or the middle stage of the column prior to the start of the temperature elevation of the distilling column, thereby preventing the polymerization of the easily polymerizing compound more effectively.
摘要翻译：一种用于启动用于处理容易聚合的含化合物的溶液的蒸馏塔的方法，其特征在于，在蒸馏塔开始操作时将聚合抑制剂供入具有不高于80℃的蒸馏塔的底部液体 ℃。此外，在蒸馏塔开始升温之前，通过在蒸馏塔的顶部或塔的中间阶段供应回流液体，从而更有效地防止了容易聚合的化合物的聚合。

40. 发明授权

US06599397B2 Method for preventing polymerization of (meth)acrylic acid and esters thereof and method for the production thereof 失效
标题翻译：防止（甲基）丙烯酸及其酯的聚合的方法及其制备方法
公开(公告)号：US06599397B2
公开(公告)日：2003-07-29
申请号：US09875541
申请日：2001-06-06
申请人： Kazuhiko Sakamoto , Tomohiro Nakae , Kazuo Okochi , Masahiro Uemura , Sei Nakahara
发明人： Kazuhiko Sakamoto , Tomohiro Nakae , Kazuo Okochi , Masahiro Uemura , Sei Nakahara
IPC分类号： B01D300
CPC分类号： C07C51/50 , C07C57/04
摘要： This method of preventing polymerization of methacrylic acid inn the process of its production is characterized by comprising using, in a refining column, a combination of N-nitrosophenylhydroxylamine or salt thereof with an N-oxyl compound, an N-hydroxy-,2,2,6,6-tetramethylpiperidine compound and a 2,2,6,6-tetramethylpiperidine compound. In this method, N-nitrosophenylhydroxylamine or a salt thereof rises inside a refining column under splitting part thereof to effectively inhibit polymerization of (meth)acrylic acid or the like. The above polymerization in both vapor and liquid phases can be inhibited more effectively by the combined use of the compounds mentioned above.
摘要翻译：这种防止甲基丙烯酸在其生产过程中聚合的方法的特征在于包括在精炼塔中使用N-亚硝基苯基羟胺或其盐与N-氧基化合物，N-羟基 - ，2,2' 6,6-四甲基哌啶化合物和2,2,6,6-四甲基哌啶化合物。在该方法中，N-亚硝基苯基羟胺或其盐在分解部分的内部在精炼塔内升高，有效抑制（甲基）丙烯酸等的聚合。通过上述化合物的组合使用，可以更有效地抑制气相和液相中的上述聚合。

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