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1. 发明申请

US20220402850A1 METHOD OF PURIFYING CARBOXYLIC ACID FLUORIDE 有权
公开(公告)号：US20220402850A1
公开(公告)日：2022-12-22
申请号：US17759126
申请日：2021-01-22
申请人： KANTO DENKA KOGYO CO., LTD.
发明人： Ryo KIMURA , Akiko NAKANISHI , Shohei MAEHARA
IPC分类号： C07C51/64
摘要： An object is to prevent lowering in the yield of R—COF due to contamination by impurities and thereby to produce a high-purity product of R—COF in a stable manner. According to the present invention, provided are: a method of purifying a carboxylic acid fluoride, comprising a step of removing a hydrogen halide by bringing a carboxylic acid fluoride containing the hydrogen halide into contact with a metal fluoride; a method of producing a high-purity carboxylic acid fluoride, comprising a step of bringing a carboxylic acid fluoride containing a hydrogen halide into contact with a metal fluoride as well as a high-purity carboxylic acid fluoride obtained therefrom; and a method of using a metal fluoride as an adsorbent for a hydrogen halide in a method of removing a hydrogen halide from a carboxylic acid fluoride containing the hydrogen halide.

2. 发明授权

US11021429B1 Methods for producing a methanol precursor, methanol, and a methyl ester from methane in high purities 有权
公开(公告)号：US11021429B1
公开(公告)日：2021-06-01
申请号：US16943179
申请日：2020-07-30
申请人： KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
发明人： Hyun Joo Lee , Ung Lee , He Won Lee , Tran Huyen Dang , Seok Hyeon Cheong
IPC分类号： C07C51/64 , C07C51/493 , C07C29/88
摘要： A method for producing a methanol precursor, methyl trifluoroacetate, having high-purity includes the steps of (a) preparing methyl bisulfate by mixing a catalyst with an acid solution comprising a sulfur-containing acid to provide a first mixture and supplying methane gas to the first mixture to prepare the methyl bisulfate; and (b) preparing methyl trifluoroacetate (CF3CO2CH3) by adding trifluoroacetic acid (CF3CO2H) to the first mixture including the methyl bisulfate to provide a second mixture and distilling the second mixture under heating to prepare, separate and purify the methyl trifluoroacetate (CF3CO2CH3). Methanol may be produced by adding water to the methyl trifluoroacetate (CF3CO2CH3). A methyl ester represented by Formula 2 below may be produced by adding a carboxylic acid represented by Formula 1 below to the methyl trifluoroacetate (CF3CO2CH3): R1CO2H (1), where R1 is selected from C1-C10 alkyl groups, R1CO2CH3 (2), where R1 is as defined in Formula 1.

3. 发明申请

US20200317595A1 METHOD OF REMOVING NITRATE COMPOUNDS FROM ADIPIC ACID 审中-公开
公开(公告)号：US20200317595A1
公开(公告)日：2020-10-08
申请号：US16956252
申请日：2018-12-13
申请人： BASF SE
发明人： Romain FENIOU , Mathieu OULLION
IPC分类号： C07C51/27 , C07C51/64 , B01J19/00 , B01J8/24
摘要： The present invention relates to a method of removing nitrate compounds from solid adipic acid.

4. 发明申请

US20200223778A1 REDUCTION OF CONTENT OF CARBOXYLIC ACIDS AND DERIVATIVES THEREOF IN OLEUM, DISULFURIC ACID OR CONCENTRATED SULFURIC ACID 审中-公开
公开(公告)号：US20200223778A1
公开(公告)日：2020-07-16
申请号：US16607846
申请日：2018-04-25
申请人： SOLVAY SA
发明人： Jean-Marie BLAUDE , Benoit GOSSELIN , Alain LAMBERT , Mathias MAREK , Harald KRUEGER , Jan Schostag , Miriam Heyd
IPC分类号： C07C51/64
摘要： The present invention concerns a process for the reduction of content of carboxylic acids and derivatives thereof in oleum, disulfuric acid or concentrated sulfuric acid. The invention further concerns a process for the manufacture of carboxylic acid anhydrides comprising the process for the reduction of content of carboxylic acids and derivatives thereof from oleum, disulfuric acid or concentrated sulfuric acid.

5. 发明授权

US10633323B2 Method of producing acid halide solution and method of producing monoester compound 有权
公开(公告)号：US10633323B2
公开(公告)日：2020-04-28
申请号：US16069994
申请日：2017-01-20
申请人： ZEON CORPORATION
发明人： Kanako Sanuki , Kei Sakamoto , Kumi Okuyama , Hiroki Iwaki
IPC分类号： C07C51/64 , C07C67/14 , C07C51/60 , C07C61/09 , C07C69/75 , C07B61/00
CPC分类号： C07C51/64 , C07C51/60 , C07C61/09 , C07C67/14 , C07C69/75 , C07B61/00 , C07C2601/14
摘要： Provided is a method of producing an acid halide solution that is useful in production of a polymerizable liquid-crystal compound. The method of producing an acid halide solution includes: a first step of reacting a specific dicarboxylic acid compound with a halogenating agent in a water-immiscible organic solvent in the presence of at least 1.1 equivalents and not more than 3.0 equivalents of an activator relative to the dicarboxylic acid compound to obtain a reaction liquid including a solution that contains an acid halide compound and an oily liquid that is immiscible with the solution containing the acid halide compound; and a second step of removing the oily liquid from the reaction liquid obtained in the first step to obtain a purified liquid containing the acid halide compound.

6. 发明授权

US10584089B2 Fluorination of acrylate esters and derivatives 有权
公开(公告)号：US10584089B2
公开(公告)日：2020-03-10
申请号：US16199967
申请日：2018-11-26
申请人： Vifor (International) Ltd.
发明人： YongQi Mu
IPC分类号： C07C51/36 , C07C51/50 , C07C51/62 , C07C51/64 , C07C51/363 , C07C67/03 , C07C67/22 , C07C67/62 , C07C67/307 , C07C253/30 , C07C253/32
摘要： The present invention generally relates to processes for converting acrylate esters or a derivative thereof to difluoropropionic acid or a derivative thereof. This process is generally performed using fluorine gas in a hydrofluorocarbon solvent. In particular, a process for fluorinating a double bond is disclosed. This process comprises forming a reaction mixture comprising a hydrofluorocarbon solvent, fluorine gas, and a compound of formula 1 wherein R1 is hydroxy, alkoxy, chloro, or —OC(O)CH═CH2 to form a compound of formula 2 in a yield of at least 50% wherein R2 is hydroxy, alkoxy, chloro, —OC(O)CHFCH2F, wherein the hydrofluorocarbon solvent comprises 2H,3H-decafluoropentane and the reaction mixture further comprises a fluorination agent.

7. 发明申请

US20150299088A1 METHOD FOR PRODUCING DRY ETCHING GAS 有权
标题翻译：生产干燥气体的方法
公开(公告)号：US20150299088A1
公开(公告)日：2015-10-22
申请号：US14436248
申请日：2013-11-12
申请人： DAIKIN INDUSTRIES, LTD.
发明人： Shingo NAKAMURA , Yuusuke ETOU , Tatsuya OHTSUKA , Kanako FUKUMOTO , Masato NAITOU
IPC分类号： C07C51/58 , C07C17/38 , C07C51/64 , C07C17/361 , C07C41/06
CPC分类号： C07C51/58 , C07C17/361 , C07C17/38 , C07C17/383 , C07C41/06 , C07C51/64 , C07C19/08 , C07C53/50 , C07C43/12
摘要： Provided is a method for producing fluoromethane and 3,3,3-trifluoro-2-(trifluoromethyl)propanoyl fluoride ((CF3)2CHCOF), which are useful as dry etching gases etc., safely and inexpensively with high purity.According to the method in which 1,1,3,3,3-pentafluoro-2-trifluoromethylpropyl methyl ether is pyrolyzed in a gas phase in the presence of a catalyst, the desired fluoromethane and 3,3,3-trifluoro-2-(trifluoromethyl)propanoyl fluoride can be obtained with high selectivity and high conversion of the starting material by a simple process in which a pyrolysis reaction is performed in a gas phase using the inexpensive starting material.
摘要翻译：本发明提供了可以以高纯度安全且廉价地用作干蚀刻气体等的氟甲烷和3,3,3-三氟-2-（三氟甲基）丙酰氟（（CF 3）2 CHCOF）的制造方法。根据其中1,1,3,3,3-五氟-2-三氟甲基丙基甲基醚在气相中在催化剂存在下热解的方法，所需的氟甲烷和3,3,3-三氟-2- （三氟甲基）丙酰氟可以通过简单的方法以高选择性和高转化率获得，其中使用廉价的原料在气相中进行热解反应。

8. 发明授权

US08829236B2 Process for the preparation of a halogenoacetyl fluoride and its derivatives 有权
标题翻译：制备卤代乙酰氟及其衍生物的方法
公开(公告)号：US08829236B2
公开(公告)日：2014-09-09
申请号：US13386637
申请日：2010-07-07
申请人： Laurent Saint-Jalmes , Francois Metz
发明人： Laurent Saint-Jalmes , Francois Metz
IPC分类号： C07C51/58 , C07C53/18 , C07C51/64 , C07C51/04 , C07C51/62
CPC分类号： C07C51/58 , C07C51/04 , C07C51/62 , C07C51/64 , C07C53/18 , C07C53/48
摘要： The present invention relates to a method for preparing a halogenoacetyl fluoride and the derivatives thereof. The inventive method for preparing a halogenoacetyl fluoride acid is characterized in that said method includes: a step of preparing a halogenoacetyl halide by photo-oxidation of a halogenoethylene compound in conditions such that the transformation rate of the halogenoethylene compound into halogenoacetyl halide is no higher than 80%, producing a reaction mixture essentially including halogenoacetyl halide and the excess halogenoethylene compound; a step of partial fluorination of the mixture obtained by reacting the latter with hydrofluoric acid suitable for obtaining a mixture of halogenoacetyl fluoride and the excess halogenoethylene compound; a step of separating the halogenoacetyl fluoride and the excess halogenoethylene compound. The invention can be used, specifically, for preparing the trichloroacetyl fluoride used as an intermediate species in the production of trifluoroacetic acid.
摘要翻译：本发明涉及一种制备卤代乙酰氟及其衍生物的方法。本发明的制备卤代乙酰氟酸的方法的特征在于所述方法包括：通过卤代乙烯化合物的光氧化制备卤代乙酰卤的步骤，使得卤代乙烯化合物转化为卤代乙酰卤的条件不高于 80％，产生基本上包括卤代乙酰卤和过量卤代乙烯化合物的反应混合物; 通过使后者与适于获得卤代乙酰氟和过量卤代乙烯化合物的混合物的氢氟酸反应获得的混合物的部分氟化步骤; 分离卤代乙酰氟和过量的卤代乙烯化合物的步骤。本发明可以用于制备三氟乙酸生产中用作中间体的三氯乙酰氟。

9. 发明申请

US20110166385A1 METHOD FOR SEPARATING A CARBOXYLIC ACID IN SALIFIED FORM BEARING AT LEAST ONE HALOGEN ATOM 有权
标题翻译：用于在至少一个卤素原子上分配载体的羧酸的方法
公开(公告)号：US20110166385A1
公开(公告)日：2011-07-07
申请号：US13003136
申请日：2009-07-08
申请人： Olivier Buisine , François Metz
发明人： Olivier Buisine , François Metz
IPC分类号： C07C51/64
CPC分类号： C07C51/412 , C07C51/48 , C07C53/21 , C07C53/18 , C07C53/19 , C07C53/16
摘要： The subject of the present invention is a method for separating a carboxylic acid in salified form bearing at least one halogen atom at the α position of the carbonyl group from a medium comprising it. The method according to the invention, for separating a carboxylic acid in salified form bearing at least one halogen atom at the α position of the carbonyl group from an aqueous medium comprising it, is characterized by the fact that the latter is brought into contact with an onium salt leading to the formation of two phases: an organic phase comprising the salt resulting from the reaction of the salt of the carboxylic acid bearing at least one halogen atom at the α position of the carbonyl group and of the onium salt leading to the displacement of the cation from the carboxylic acid by the onium, an aqueous phase comprising the various salts, in particular the one resulting from the reaction of the cation of the carboxylic acid with the anion of the onium, and by the fact that the organic and aqueous phases are then separated and that the onium salt of the carboxylic acid is recovered from the organic phase.
摘要翻译：本发明的主题是在含有羰基的α位的至少一个卤素原子的盐化形式的羧酸的分离方法。根据本发明的方法，用于从含有它的水性介质中分离在羰基的α位上带有至少一个卤素原子的盐化形式的羧酸，其特征在于，后者与导致形成两相的有机相：包含由羰基的α位上带有至少一个卤素原子的羧酸的盐与导致位移的鎓盐反应而产生的盐的有机相的阳离子由羧酸由鎓形成，包含各种盐的水相，特别是由羧酸的阳离子与鎓的阴离子反应的水相，以及有机和水性然后分离相并从有机相中回收羧酸的鎓盐。

10. 发明授权

US06921837B2 Process for the purification and preparation of acrylic acid or methacrylic acid 有权
标题翻译：纯化和制备丙烯酸或甲基丙烯酸的方法
公开(公告)号：US06921837B2
公开(公告)日：2005-07-26
申请号：US10656203
申请日：2003-09-08
申请人： Bernd Eck , Jörg Heilek , Dieter Baumann , Volker Schliephake
发明人： Bernd Eck , Jörg Heilek , Dieter Baumann , Volker Schliephake
IPC分类号： C07C51/64 , C07C51/25 , C07C51/43 , C07C51/47 , C07C57/05 , C07C57/07 , C07C51/42
CPC分类号： C07C51/43 , C07C51/252 , C07C51/47 , C07C57/04
摘要： Acrylic acid or methacrylic acid is purified by crystallization to obtain crystals and a mother liquor, by a process in which the crystals are washed with a wash liquid containing the acid and having a temperature from 15 to 40° C. Furthermore, a process for the preparation of acrylic acid or methacrylic acid comprises the abovementioned purification process.
摘要翻译：丙烯酸或甲基丙烯酸通过结晶纯化，得到晶体和母液，其中晶体用含有酸的洗涤液洗涤并具有15至40℃的温度。此外，丙烯酸或甲基丙烯酸的制备包括上述纯化方法。

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