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1. 发明授权

US5315037A Process for purification of acrylic acid 失效
标题翻译：丙烯酸纯化方法
公开(公告)号：US5315037A
公开(公告)日：1994-05-24
申请号：US222
申请日：1993-01-04
申请人： Kazuhiko Sakamoto , Hiroaki Tanaka , Masatoshi Ueoka , Yoji Akazawa , Masao Baba
发明人： Kazuhiko Sakamoto , Hiroaki Tanaka , Masatoshi Ueoka , Yoji Akazawa , Masao Baba
IPC分类号： C07C51/46 , C07C57/07 , C07C51/16 , C07C51/42
CPC分类号： C07C51/46
摘要： A process for producing acrylic acid is described, which process comprising providing a mixed gas of acrylic acid and by-products produced by catalytic gas phase oxidation of propylene and/or acrolein, contacting the mixed gas with water to obtain an aqueous solution, and adding an azeotrope solvent to the aqueous solution for distillation to obtain a mixture of the by-products, water and the azeotrope solvent from a tower top and acrylic acid from a tower bottom. Highly pure acrylic acid is obtained by using, as the azeotrope solvent, a mixed solvent of solvent A selected from diethyl ketone, methyl propyl ketone, methyl isobutyl ketone, methyl-tert-butyl ketone, n-propyl acetate and mixtures thereof and solvent B selected from toluene, heptane, methyl cyclohexane and mixtures thereof.
摘要翻译：描述了制备丙烯酸的方法，该方法包括提供丙烯酸的混合气体和通过丙烯和/或丙烯醛的催化气相氧化制备的副产物，使混合气体与水接触以获得水溶液，并加入与用于蒸馏的水溶液的共沸溶剂，从塔顶获得副产物，水和共沸溶剂的混合物，并从塔底获得丙烯酸。通过使用选自二乙基酮，甲基丙基酮，甲基异丁基酮，甲基 - 叔丁基酮，乙酸正丙酯及其混合物的溶剂A和溶剂B的混合溶剂作为共沸溶剂，得到高纯丙烯酸选自甲苯，庚烷，甲基环己烷及其混合物。

2. 发明授权

US5504243A Method for inhibiting polymerization of (meth) acrylic acid and esters thereof 失效
标题翻译：抑制（甲基）丙烯酸及其酯的聚合的方法
公开(公告)号：US5504243A
公开(公告)日：1996-04-02
申请号：US444869
申请日：1995-05-19
申请人： Kazuhiko Sakamoto , Takahiro Takeda , Masatoshi Ueoka , Yoji Akazawa , Masao Baba
发明人： Kazuhiko Sakamoto , Takahiro Takeda , Masatoshi Ueoka , Yoji Akazawa , Masao Baba
IPC分类号： C07C51/50 , C07C57/075 , C07C67/62 , C07C69/52
CPC分类号： C07C51/50 , C07C67/62
摘要： Disclosed herein is a method for inhibiting polymerizable (meth)acrylic acid and esters thereof from polymerizing during their production, transportation and storage by using as the inhibitor N-oxyl compound and more than one compound selected from the group consisting of manganese salt compound, copper salt compound, 2,2,6,6,-tetramethylpiperidine compound and nitroso compound. The N-oxyl compound is one or more kinds selected from 2,2,6,6,-tetramethylpiperidinooxyl, 4-hydroxy-2,2,6,6,-tetramethylpiperidinooxyl and 4,4',4"-tris-(2,2,6,6,-tetramethylpiperidinooxyl)phosphite. The combined use of the inhibitors provides superior inhibiting effect to use alone.
摘要翻译：本文公开了一种抑制可聚合（甲基）丙烯酸及其酯在制备，运输和储存期间聚合的方法，其用作抑制剂N-氧基化合物和多种选自锰盐化合物，铜盐化合物，2,2,6,6， - 四甲基哌啶化合物和亚硝基化合物。 N-氧基化合物是选自2,2,6,6， - 四甲基哌啶子基氧基，4-羟基-2,2,6,6'-四甲基哌啶子基氧基和4,4'，4“ - 三 - （ 2,2,6,6， - 四甲基哌啶氧基）亚磷酸酯。抑制剂的组合使用对单独使用具有优异的抑制作用。

3. 发明授权

US5322960A Method for inhibiting polymerization of (meth) acrylic acid and esters thereof 失效
标题翻译：抑制（甲基）丙烯酸及其酯的聚合的方法
公开(公告)号：US5322960A
公开(公告)日：1994-06-21
申请号：US99318
申请日：1993-07-30
申请人： Kazuhiko Sakamoto , Takahiro Takeda , Masatoshi Ueoka , Yoji Akazawa , Masao Baba
发明人： Kazuhiko Sakamoto , Takahiro Takeda , Masatoshi Ueoka , Yoji Akazawa , Masao Baba
IPC分类号： C07C51/50 , C07C57/05 , C07C67/62 , C07C69/52
CPC分类号： C07C51/50 , C07C67/62
摘要： Disclosed herein is a method for inhibiting polymerizable (meth)acrylic acid and esters thereof from polymerizing during their production and storage by using as the inhibitor N-oxyl compound, phenol compound, and phenothiazine compound in combination with one another. The combined use of the three inhibitors provides superior inhibiting effect to use alone alone or in pairs.
摘要翻译：本文公开了一种通过使用抑制剂N-氧基化合物，酚化合物和吩噻嗪化合物彼此组合来抑制可聚合的（甲基）丙烯酸及其酯在制备和储存期间聚合的方法。三种抑制剂的组合使用提供了单独使用或成对使用的优异的抑制作用。

4. 发明授权

US4665200A Method for preparing pyromellitic acid and/or pyromellitic anhydride 失效
标题翻译：制备均苯四酸和/或均苯四酸酐的方法
公开(公告)号：US4665200A
公开(公告)日：1987-05-12
申请号：US841833
申请日：1986-03-20
申请人： Yoshiyuki Nakanishi , Yoji Akazawa , Ikuo Kurimoto , Youjirou Takahashi , Shinichi Uchida , Hisashi Yoshikawa
发明人： Yoshiyuki Nakanishi , Yoji Akazawa , Ikuo Kurimoto , Youjirou Takahashi , Shinichi Uchida , Hisashi Yoshikawa
IPC分类号： B01J23/00 , B01J23/20 , B01J35/02 , B01J37/02 , C07C51/265 , C07D307/89
CPC分类号： C07C51/265 , B01J23/002 , B01J23/20 , B01J2523/00 , B01J35/026 , B01J37/0223
摘要： In a method for the preparation of pyromellitic acid or its anhydride by catalytic vapor phase oxidation of a tetra-C.sub.1 -C.sub.4 -alkylbenzene using a catalyst comprising catalytically active material composed of 1 to 20 parts by weight of V.sub.2 O.sub.5, 99 to 80 parts by weight of TiO.sub.2 and/or SnO.sub.2 and/or ZrO.sub.2, and per one hundred parts by weight of V.sub.2 O.sub.5, TiO.sub.2 and/or SnO.sub.2 and/or ZrO.sub.2 0.02 to 10 parts by weight, calculated as P.sub.2 O.sub.5, of a phosphorus compound, 0.01 to 5 parts by weight, calculated as Nb.sub.2 O.sub.5, of a niobium compound, 0 to 1.2 parts by weight, calculated as oxide, of at least one metal selected from the group consisting of potassium, cesium, rubidium and thallium, and 0 to 10 parts by weight, calculated as Sb.sub.2 O.sub.3, of an antimony compound, and an inert carrier supporting said catalytically active material thereon, the improvement in which said catalyst is divided into at least two layers, a layer on the gas inlet side and a layer on the gas outlet side, and (i) the content of potassium, cesium, rubidium or thallium is higher in the catalyst layer on the gas inlet side than in the catalyst layer on the gas outlet side, or (ii) the content of the phosphorus compound is lower in the catalyst layer on the gas inlet side than in the catalyst layer on the gas outlet side, or (iii) the surface area of TiO.sub.2 and/or SnO.sub.2 and/or ZrO.sub.2 is lower in the catalyst layer on the gas inlet side than in the catalyst layer on the gas outlet side.
摘要翻译：在通过使用包含由1-20重量份V 2 O 5组成的催化活性材料的催化剂四丁基-C1-烷基苯的催化气相氧化制备1,2,4,5-苯四酸或其酸酐的方法中，99至80重量份的TiO 2和/或SnO 2和/或ZrO 2，并且每100重量份的V 2 O 5，TiO 2和/或SnO 2和/或ZrO 2为0.02至10重量份，以P2O5计，磷化合物为0.01至5重量份以Nb 2 O 5计，铌化合物，0〜1.2重量份（以氧化物计）为至少一种选自钾，铯，铷和铊的金属，0〜10重量份，以锑化合物计，锑化合物和负载其上的催化活性物质的惰性载体，其中所述催化剂分为至少两层，气体入口侧的层和气体出口侧的层的改进，和（i）钾，铯，r的含量氦或铊在气体入口侧的催化剂层中高于气体出口侧的催化剂层，或者（ⅱ）在气体入口侧的催化剂层中的含量比在催化剂中低或（iii）在气体导入侧的催化剂层中，与气体出口侧的催化剂层相比，TiO 2和/或SnO 2和/或ZrO 2的表面积较低。

5. 发明授权

US4356112A Catalyst for production of phthalic anhydride 失效
标题翻译：用于生产邻苯二甲酸酐的催化剂
公开(公告)号：US4356112A
公开(公告)日：1982-10-26
申请号：US210689
申请日：1980-11-26
申请人： Yoshiyuki Nakanishi , Yoji Akazawa , Noriaki Ikeda , Takehiko Suzuki
发明人： Yoshiyuki Nakanishi , Yoji Akazawa , Noriaki Ikeda , Takehiko Suzuki
IPC分类号： C07D307/89 , B01J21/06 , B01J27/195 , B01J27/198 , C07C51/265 , C07C51/31 , B01J27/14
CPC分类号： C07C51/313 , B01J23/002 , B01J27/198 , C07C51/265 , B01J2523/00
摘要： A catalyst for the production of phthalic anhydride by the catalytic vapor-phase oxidation of o-xylene or naphthalene with molecular oxygen, said catalyst comprising a catalytically active material composed of 1 to 20 parts by weight of V.sub.2 O.sub.5 of vanadium oxide and 99 to 80 parts by weight as TiO.sub.2 of anatase-type titanium oxide being porous and having a particle diameter substantially of 0.4 to 0.7 micron and a specific surface area of 10 to 60 m.sup.2 /g, and per 100 parts by weight of the sum of these two components, 0.01 to 1 part by weight as Nb.sub.2 O.sub.5 of niobium, 0.05 to 1.2 parts by weight as oxide of potassium, cesium, rubidium or thallium, 0.2 to 1.2 parts by weight as P.sub.2 O.sub.5 of phosphorus and 0.5 to 10 parts by weight as Sb.sub.2 O.sub.3 of antimony, said catalytically active material being supported on a porous carrier in an amount of 3 to 200 g/100 cc of carrier.
摘要翻译：用于通过邻二甲苯或萘与分子氧的催化气相氧化来生产邻苯二甲酸酐的催化剂，所述催化剂包含催化活性材料，其由1至20重量份的V 2 O 5氧化钒和99至80重量份，因为锐钛矿型氧化钛的TiO 2是多孔的，其粒径基本上为0.4〜0.7微米，比表面积为10〜60m 2 / g，相对于这两种成分的总和为100重量份，作为铌的Nb 2 O 5为0.01〜1重量份，作为钾，铷，铷或铊的氧化物为0.05〜1.2重量份，磷的P2O5为0.2〜1.2重量份，Sb 2 O 3为0.5〜10重量份，所述催化活性材料以3至200g / 100cc载体的量负载在多孔载体上。

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