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41. 发明授权

US06540881B1 Method for refining (meth)acrylic acid 有权
标题翻译：精制（甲基）丙烯酸的方法
公开(公告)号：US06540881B1
公开(公告)日：2003-04-01
申请号：US09532225
申请日：2000-03-22
申请人： Kazuhiko Sakamoto , Kouji Ueno , Sei Nakahara , Masatoshi Ueoka
发明人： Kazuhiko Sakamoto , Kouji Ueno , Sei Nakahara , Masatoshi Ueoka
IPC分类号： B01D342
CPC分类号： C07C51/44 , C07C51/23 , C07C51/252 , C07C51/50 , Y10S203/22 , C07C57/04
摘要： This invention relates to a method for preventing (meth)acrylic acid from polymerizing during the course of distillation. The method provides for refining (meth)acrylic acid by a procedure including the steps of feeding a mixed gas obtained by catalytic gas phase oxidation of propylene and/or acrolein with a molecular oxygen-containing gas or a mixed gas obtained by catalytic gas phase oxidation of at least one compound of isobutylene, t-butyl alcohol, or methacrolein with a molecular oxygen-containing gas, to a (meth)acrylic acid collection column, collecting a (meth)acrylic acid-containing solution from the mixed gas, and feeding the (meth)acrylic acid-containing solution to a distillation column while maintaining the total concentration of aldehydes of 2-4 carbon atoms and acetone in the solution at a level of not more than 2000 ppm based on the amount of (meth)acrylic acid.
摘要翻译：本发明涉及一种在蒸馏过程中防止（甲基）丙烯酸聚合的方法。该方法通过以下步骤提供（甲基）丙烯酸的精制，包括以下步骤：将通过丙烯和/或丙烯醛的催化气相氧化获得的混合气体与含分子氧的气体或通过催化气相氧化获得的混合气体的至少一种异丁烯，叔丁醇或甲基丙烯醛的化合物与含分子氧的气体反应到（甲基）丙烯酸收集塔，从混合气体中收集（甲基）丙烯酸的溶液，并进料（甲基）丙烯酸溶液，同时维持2-4个碳原子的醛和丙酮的总浓度在不超过2000ppm的水平下，基于（甲基）丙烯酸的量。

42. 发明授权

US06469202B2 Method for disposal of solid catalyst 有权
标题翻译：固体催化剂处理方法
公开(公告)号：US06469202B2
公开(公告)日：2002-10-22
申请号：US09732563
申请日：2000-12-08
申请人： Sei Nakahara , Takeshi Nishimura , Masahiro Motofuji , Masatoshi Ueoka
发明人： Sei Nakahara , Takeshi Nishimura , Masahiro Motofuji , Masatoshi Ueoka
IPC分类号： C07C6952
CPC分类号： B01J31/08 , B01J31/4007 , B01J38/48 , B01J38/52 , B01J2231/4288 , B01J2231/49 , C07C67/48 , Y02P20/584 , C07C69/54
摘要： A method for washing a spent solid catalyst is disclosed which is characterized by washing the solid catalyst used for the reaction of generating an esterified compound in a device packed with the solid catalyst, distilling the cleaning fluid in a distilling part, and circulating the fraction obtained by the distillation to an esterification reactor. According to this invention, the existing apparatus used during the process for the production of an esterified compound can be adopted without any modification, the water by-produced in the reaction for production an esterified compound and an alcohol as the raw material for esterification can be used as the cleaning fluid, and these effective components can be recovered from the cleaning fluid. Thus, the stimulation from the offensive odor and the volatile component which has heretofore posed a problem during the removal of the solid catalyst is eliminated and the safety in terms of heath and in terms of operation is secured.
摘要翻译：公开了一种用于洗涤废固体催化剂的方法，其特征在于洗涤用于在装有固体催化剂的装置中产生酯化化合物的反应的固体催化剂，在蒸馏部分蒸馏清洗流体，并循环获得的馏分通过蒸馏至酯化反应器。根据本发明，可以采用在酯化化合物的制造方法中使用的现有装置，而不进行任何改性，在酯化反应中产生的水作为酯化原料的醇可以是用作清洁液，并且这些有效成分可以从清洗液中回收。因此，消除了在去除固体催化剂期间已经产生问题的令人反感的气味和挥发性成分的刺激，并且确保了健康方面和操作方面的安全性。

43. 发明授权

US06444744B1 Hydrophilic resin, absorbent article, and acrylic acid for polymerization 有权
标题翻译：亲水性树脂，吸收性物品和丙烯酸进行聚合
公开(公告)号：US06444744B1
公开(公告)日：2002-09-03
申请号：US09258503
申请日：1999-02-27
申请人： Hirotama Fujimaru , Kunihiko Ishizaki , Nobuyuki Harada , Sei Nakahara
发明人： Hirotama Fujimaru , Kunihiko Ishizaki , Nobuyuki Harada , Sei Nakahara
IPC分类号： C08F2006
CPC分类号： C08F20/06 , A61L15/24 , A61L15/60 , C08L33/02
摘要： The invention provides a hydrophilic resin and an absorbent article, both of which display still less coloring and discoloring when preserved for a long time. The hydrophilic resin is any one of: 1) a hydrophilic resin, obtained by a process including the step of polymerizing a monomer component including a major proportion of either one or both of acrylic acid and its salt which merely have a content of at most 0.20 ppm in total of hydroquinone and benzoquinone; 2) a hydrophilic resin, comprising a major proportion of an acrylic polymer and a minor proportion of either one or both of hydroquinone and benzoquinone, with the hydrophilic resin further comprising a quinhydronation inhibitor of 10˜1,000,000 times the total weight of hydroquinone and benzoquinone; 3) a hydrophilic resin, comprising a major proportion of an acrylic polymer and merely having a coloring degree (YI) of at most 20 after being left under conditions of the open system, 70° C., 65% RH for 1 week; and 4) a hydrophilic resin, which is a water-absorbent resin and is surface-crosslinked or surface-impregnated with a polyhydric alcohol and displays pH of 5.5 or less in a physiological salt solution and has an absorption capacity of 20 g/g or more for a physiological salt solution under a load of 50 g/cm2. In addition, the absorbent article comprises the above hydrophilic resin.
摘要翻译：本发明提供一种亲水性树脂和吸收性物品，两者在长期保存时都显示出较少的着色和变色。亲水性树脂是以下中的任何一种：1）亲水性树脂，其通过包括以下步骤的方法获得，所述方法包括使仅含有至多0.20的含量的丙烯酸及其盐中的一种或两种以上的主要部分对苯二酚和苯醌总共ppm; 2）亲水性树脂，其中主要部分为丙烯酸类聚合物和少量氢醌和苯醌中的一种或两种，亲水性树脂还含有氢醌和苯醌总重量的10〜1,000,000倍的醌氢醌抑制剂; 3）亲水性树脂，其包含主要部分的丙烯酸类聚合物，并且仅在开放系统的条件下，70℃，65％RH下仅具有至多20的着色度（YI）1周; 和4）作为吸水性树脂的表面交联或表面浸渍多元醇的亲水性树脂，在生理盐溶液中显示出pH5.5以下的吸收能力，吸收容量为20g / g，更多的是在50g / cm 2的负荷下的生理盐溶液。另外，吸收性物品包含上述亲水性树脂。

44. 发明授权

US06414183B1 Method for handling waste oil 有权
标题翻译：处理废油的方法
公开(公告)号：US06414183B1
公开(公告)日：2002-07-02
申请号：US09543743
申请日：2000-04-05
申请人： Kazuhiko Sakamoto , Sei Nakahara , Masatoshi Ueoka
发明人： Kazuhiko Sakamoto , Sei Nakahara , Masatoshi Ueoka
IPC分类号： C07C6954
CPC分类号： C07C51/42 , C07C51/252 , C07C67/39 , C07C57/04 , C07C69/54
摘要： The present invention provides a method for stabilizing waste oil which is taken of each chemical apparatus of the manufacturing line of (meth)acryl acid and/or ester thereof, and treating the waste oil such as draining it out of the production apparatus, for example, a distillation tower from its bottom, sending and transporting it by a pump through a pipeline, and storing it in a storage tank in a simple manner while keeping the waste oil in a stable state. The waste oil can be stabilized by coexisting with solvent. The solvent used in the present invention is typically at least one selected from the group consisting of water, alcohol, ether, carboxylic acid, ketone, aromatic hydrocarbons, and aliphatic hydrocarbons.
摘要翻译：本发明提供了一种稳定废油的方法，该方法取自（甲基）丙烯酸和/或其酯的生产线的每个化学装置，并将废油例如从生产装置中排出，例如，蒸馏塔从底部通过泵送出并通过管道运输，并以简单的方式将其储存在储罐中，同时保持废油处于稳定状态。废油可以通过与溶剂共存而稳定。本发明中使用的溶剂通常为选自水，醇，醚，羧酸，酮，芳族烃和脂族烃中的至少一种。

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