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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
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。
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公开(公告)号：US07183428B2
公开(公告)日：2007-02-27
申请号：US10858935
申请日：2004-06-02
申请人： Kouji Ueno , Harunori Hirao , Naoki Serata , Takeshi Yokogoshiya
发明人： Kouji Ueno , Harunori Hirao , Naoki Serata , Takeshi Yokogoshiya
摘要： A method for producing acrylic acid by using an acrylic acid-containing solution of high concentration without azeotropic distillation is provided. This method of producing acrylic acid comprises introducing an acrylic acid-containing gas obtained by catalytic gas phase oxidation reaction into an absorption column and supplying the acrylic acid-containing solution to crystallization step thereby separating the solution into acrylic acid and residual mother liquid, and distilling at least part of the residual mother liquid and circulating the distillate obtained by the distillation to the absorption column.
摘要翻译： 提供了一种通过使用不经共沸蒸馏的高浓度的含丙烯酸的溶液制备丙烯酸的方法。 该制造丙烯酸的方法包括将通过催化气相氧化反应获得的含丙烯酸的气体引入吸收塔中，并将含丙烯酸的溶液供给结晶步骤，从而将溶液分离成丙烯酸和残余的母液，并蒸馏 至少部分残余母液，并将通过蒸馏获得的馏出物循环到吸收塔。
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公开(公告)号：US07332626B2
公开(公告)日：2008-02-19
申请号：US10859036
申请日：2004-06-02
申请人： Harunori Hirao , Kouji Ueno , Naoki Serata , Takeshi Yokogoshiya
发明人： Harunori Hirao , Kouji Ueno , Naoki Serata , Takeshi Yokogoshiya
IPC分类号： C07C51/42
CPC分类号： B01D53/1487 , C07C51/252 , C07C57/04
摘要： A method for producing acrylic acid by absorbing acrylic acid at a high ratio and obtaining an acrylic acid-containing solution of high concentration is provided. This method comprises a step of circulating part of a discharged gas from an absorption step of acrylic acid to the reactor and discarding the remainder to the out side of system while the gas is cooled before circulation to the reactor. By the method, the acrylic acid-containing solution of high concentration is obtained due to decrease of an acrylic acid loss.
摘要翻译： 提供通过以高比例吸收丙烯酸生产丙烯酸的方法，并获得高浓度的含丙烯酸的溶液。 该方法包括将排出的气体的一部分从丙烯酸的吸收步骤循环到反应器中并将余量排出到系统外侧的步骤，同时在循环到反应器之前冷却气体。 通过该方法，由于丙烯酸损失的降低，得到高浓度的含丙烯酸的溶液。
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公开(公告)号：US07321060B2
公开(公告)日：2008-01-22
申请号：US10858974
申请日：2004-06-02
申请人： Naoki Serata , Kouji Ueno , Harunori Hirao , Takeshi Yokogoshiya
发明人： Naoki Serata , Kouji Ueno , Harunori Hirao , Takeshi Yokogoshiya
CPC分类号： C07C51/44 , C07C51/252 , C07C51/48 , C07C57/04
摘要： A method for the production of acrylic acid of high concentration by absorbing acrylic acid with high absorption ratio of acrylic acid is provided. In a method for producing acrylic acid by a procedure comprising a step of catalytic gas phase oxidation reaction and a step of absorbing the acrylic acid-containing gas, while a low boiling substance-containing solution is introduced into the absorption column via a portion different from the top of the column.
摘要翻译： 提供了一种通过以高吸收比的丙烯酸吸收丙烯酸生产高浓度丙烯酸的方法。 在通过包括催化气相氧化反应步骤和吸收含丙烯酸气体的步骤的方法制备丙烯酸的方法中，而含低沸点物质的溶液通过不同于 列的顶部。
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公开(公告)号：US20070270611A1
公开(公告)日：2007-11-22
申请号：US11880549
申请日：2007-07-23
申请人： Harunori Hirao , Kouji Ueno , Naoki Serata , Takeshi Yokogoshiya
发明人： Harunori Hirao , Kouji Ueno , Naoki Serata , Takeshi Yokogoshiya
IPC分类号： C07C51/21
CPC分类号： B01D53/1487 , C07C51/252 , C07C57/04
摘要： A method for producing acrylic acid by absorbing acrylic acid at a high ratio and obtaining an acrylic acid-containing solution of high concentration is provided. This method comprises a step of circulating part of a discharged gas from an absorption step of acrylic acid to the reactor and discarding the remainder to the out side of system while the gas is cooled before circulation to the reactor. By the method, the acrylic acid-containing solution of high concentration is obtained due to decrease of an acrylic acid loss.
摘要翻译： 提供通过以高比例吸收丙烯酸生产丙烯酸的方法，并获得高浓度的含丙烯酸的溶液。 该方法包括将排出的气体的一部分从丙烯酸的吸收步骤循环到反应器中并将余量排出到系统外侧的步骤，同时在循环到反应器之前冷却气体。 通过该方法，由于丙烯酸损失的降低，得到高浓度的含丙烯酸的溶液。
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公开(公告)号：US06870066B2
公开(公告)日：2005-03-22
申请号：US10385359
申请日：2003-03-10
申请人： Fumio Shibusawa , Naoki Serata , Kazuhiko Sakamoto
发明人： Fumio Shibusawa , Naoki Serata , Kazuhiko Sakamoto
IPC分类号： C07B61/00 , C07C51/09 , C07C51/377 , C07C51/487 , C07C57/04 , C07C67/28 , C07C67/30 , C07C67/327 , C07C67/60 , C07C69/54 , C07C69/73 , C07C57/18
CPC分类号： C07C67/327 , C07C51/09 , C07C51/377 , C07C51/487 , C07C67/60 , C07C57/04 , C07C69/54
摘要： A method for the decomposition of a Michael type adduct of an acrylic acid and/or an acrylic ester represented by the following formula [I] or [II] is disclosed, wherein decomposing the Michael type adduct in the presence of at least one copper salt and at least one metal salt selected from the group consisting of an alkali metal salt and an alkaline earth metal salt into an acrylic acid and/or an acrylic ester and/or an alcohol. CH2═CHCOO(—X—COO)n—R1 [I] R2—O(—X—COO)m—R3 [II] (wherein n and m denote an integer in the range of 1-5, R1, R2, and R3 independently denote a hydrogen atom or an alkyl group, and —X— denotes —CH2CH2— or —CH(CH3)—, and —X— may be identical or different when n is 2 or more).
摘要翻译： 公开了分解由下式[I]或[II]表示的丙烯酸和/或丙烯酸酯的迈克尔型加合物的方法，其中在至少一种铜盐存在下分解迈克尔型加合物 和选自碱金属盐和碱土金属盐的至少一种金属盐转化成丙烯酸和/或丙烯酸酯和/或醇（其中n和m表示在 1-5，R 1，R 2和R 3独立地表示氢原子或烷基，-X-表示-CH 2 CH 2 - 或-CH（CH 3） - ，-X-可以 当n为2以上时，相同或不同）。
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公开(公告)号：US20100130778A1
公开(公告)日：2010-05-27
申请号：US12451701
申请日：2008-05-15
申请人： Kazuhiko Sakamoto , Naoki Serata , Toyofumi Sakai
发明人： Kazuhiko Sakamoto , Naoki Serata , Toyofumi Sakai
IPC分类号： C07C57/05
CPC分类号： C07C51/252 , C07C51/412 , C07C51/50 , C07C57/04 , C07C53/10
摘要： The present invention provides a method for effectively preventing the precipitation related to manganese acetate in the pipe for sending a polymerization inhibitor and the like, and the polymerization of (meth)acrylic acid. A first method of the present invention for producing (meth)acrylic acid, characterized in comprising steps of: producing a (meth)acrylic acid-containing gas by catalytic vapor phase oxidation reaction; and obtaining a (meth)acrylic acid-containing fluid by providing the (meth)acrylic acid-containing gas into a condensation column or an absorption column; wherein manganese acetate is used as a polymerization inhibitor; manganese acetate is dissolved into a (meth)acrylic acid aqueous solution containing not more than 10% by mass of (meth)acrylic acid, and the like, to obtain a manganese acetate aqueous solution; and the manganese acetate aqueous solution is provided into the condensation column or the absorption column.
摘要翻译： 本发明提供了一种用于有效地防止用于发送阻聚剂等的管中的醋酸锰沉淀和（甲基）丙烯酸聚合的方法。 本发明的制备（甲基）丙烯酸的第一种方法，其特征在于包括以下步骤：通过催化气相氧化反应制备（甲基）丙烯酸的气体; 并通过将（甲基）丙烯酸的气体提供到缩合塔或吸收塔中来获得含（甲基）丙烯酸的流体; 其中使用乙酸锰作为阻聚剂; 将乙酸锰溶解于含有不超过10质量％的（甲基）丙烯酸等的（甲基）丙烯酸水溶液中，得到乙酸锰水溶液; 并且将乙酸锰水溶液提供到缩合塔或吸收塔中。
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公开(公告)号：US06900346B2
公开(公告)日：2005-05-31
申请号：US10183840
申请日：2002-06-27
申请人： Fumio Shibusawa , Naoki Serata , Kazuhiko Sakamoto
发明人： Fumio Shibusawa , Naoki Serata , Kazuhiko Sakamoto
IPC分类号： C07C51/377 , C07B61/00 , C07C51/09 , C07C51/50 , C07C57/04 , C07C57/065 , C07C67/327 , C07C69/52 , C07C51/42
CPC分类号： C07C51/50 , C07C51/09 , C07C67/327 , C07C57/04 , C07C69/54
摘要： A method for the decomposition of a Michael type adduct, characterized by causing a Michael type adduct to react in the presence of an N-oxyl compound thereby decomposing the Michael type adduct into acrylic acid and/or the acrylic ester and/or the alcohol and a method for the production of acrylic acid and/or the acrylic ester, characterized by comprising a step of recovering a Michael type adduct formed in the process for the production of acrylic acid or acrylic ester and a step of decomposing the recovered Michael type adduct by the method of decomposition mentioned above. This invention, therefore, allows promotion of efficient utilization of the raw materials.
摘要翻译： 一种分解迈克尔型加合物的方法，其特征在于使迈克尔型加合物在N-氧基化合物存在下反应，从而将迈克尔型加合物分解成丙烯酸和/或丙烯酸酯和/或醇，和 制备丙烯酸和/或丙烯酸酯的方法，其特征在于包括回收在制备丙烯酸或丙烯酸酯的方法中形成的迈克尔型加合物的步骤和通过以下步骤分解回收的迈克尔型加合物： 上述分解方法。 因此，本发明可以促进原料的有效利用。
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公开(公告)号：US07511172B2
公开(公告)日：2009-03-31
申请号：US11880549
申请日：2007-07-23
申请人： Harunori Hirao , Kouji Ueno , Naoki Serata , Takeshi Yokogoshiya
发明人： Harunori Hirao , Kouji Ueno , Naoki Serata , Takeshi Yokogoshiya
IPC分类号： C07C51/16
CPC分类号： B01D53/1487 , C07C51/252 , C07C57/04
摘要： A method for producing acrylic acid by absorbing acrylic acid at a high ratio and obtaining an acrylic acid-containing solution of high concentration is provided. This method comprises a step of circulating part of a discharged gas from an absorption step of acrylic acid to the reactor and discarding the remainder to the out side of system while the gas is cooled before circulation to the reactor. By the method, the acrylic acid-containing solution of high concentration is obtained due to decrease of an acrylic acid loss.
摘要翻译： 提供通过以高比例吸收丙烯酸生产丙烯酸的方法，并获得高浓度的含丙烯酸的溶液。 该方法包括将排出的气体的一部分从丙烯酸的吸收步骤循环到反应器中并将余量排出到系统外侧的步骤，同时在循环到反应器之前冷却气体。 通过该方法，由于丙烯酸损失的降低，得到高浓度的含丙烯酸的溶液。
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公开(公告)号：US07151194B2
公开(公告)日：2006-12-19
申请号：US10859025
申请日：2004-06-02
申请人： Kouji Ueno , Harunori Hirao , Naoki Serata , Takeshi Yokogoshiya
发明人： Kouji Ueno , Harunori Hirao , Naoki Serata , Takeshi Yokogoshiya
摘要： A method for producing acrylic acid from an acrylic acid-containing solution of high concentration without performing azeotropic distillation is provided. This method of producing acrylic acid comprises steps of absorbing acrylic acid-containing gas, distilling the acrylic acid-containing solution without using an azeotropic solvent thereby obtaining crude acrylic acid as a column bottom stream and/or a column side stream, and supplying the crude acrylic acid to a crystallizing step and melt crystallizing the crude acrylic acid thereby obtaining purified acrylic acid.
摘要翻译： 提供了一种从不进行共沸蒸馏的高浓度丙烯酸溶液制备丙烯酸的方法。 制造丙烯酸的方法包括吸收含丙烯酸气体的步骤，在不使用共沸溶剂的情况下蒸馏含丙烯酸溶液，从而得到作为塔底流和/或塔侧流的粗丙烯酸，并将粗品 丙烯酸进行结晶步骤，并使粗丙烯酸熔融结晶，从而获得纯化的丙烯酸。
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