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公开(公告)号：US20240317668A1
公开(公告)日：2024-09-26
申请号：US18578134
申请日：2022-07-04
申请人： BASF SE
发明人： Joachim Gebhardt , Manfred Ehresmann , Marcus Zeumke , Roland Goetz , Martin Sesing , Daniel Maximilian Knoll
IPC分类号： C07C67/08 , C07C67/54 , C07D271/06
CPC分类号： C07C67/08 , C07C67/54 , C07D271/06
摘要： A process for producing alkyl trifluoroacetates The present invention relates to a process for producing alkyl trifluoroacetates by reacting trifluoroacetic acid with an alkyl alcohol R—OH in an aqueous solution, and wherein the alkyl trifluoroacetate is separated from the reaction medium by means of direct rectification. In one aspect the present invention relates to a process for recovering trifluoroacetic acid in the form of alkyl trifluoroacetates from aqueous waste-water streams of preceding chemical transformations.
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公开(公告)号：US20240124632A1
公开(公告)日：2024-04-18
申请号：US18266329
申请日：2021-12-02
发明人： Ryo NADANO , Satoru MIYAZAWA , Yuzuru KANEKO
IPC分类号： C08F220/24 , C07C67/08 , C07C67/54 , C07C69/653
CPC分类号： C08F220/24 , C07C67/08 , C07C67/54 , C07C69/653
摘要： Provided is a method for producing a fluorine-containing polymer with little lot-to-lot variation in weight average molecular weight. The method for producing a fluorine-containing polymer of the present invention relates to a method for producing a fluorine-containing polymer containing a repeating unit of formula (1) and a repeating unit of formula (2), which includes: fluorine-containing monomer synthesis including reacting a diol of formula (3) with at least one selected from the group consisting of unsaturated carboxylic acids, esters of the unsaturated carboxylic acids, acid halides of the unsaturated carboxylic acids, and anhydrides of the unsaturated carboxylic acids, to obtain a composition containing a fluorine-containing monomer of formula (4) as a main reaction product and a fluorine-containing monomer of formula (5) as a minor reaction product; fluorine-containing monomer purification including removing the fluorine-containing monomer of formula (5) from the composition to adjust the amount of the fluorine-containing monomer of formula (5), expressed in parts per million based on the mass of the fluorine-containing monomer of formula (4), to 1500 ppm or less; and polymerization including performing a polymerization reaction of the composition obtained after the fluorine-containing monomer purification to give the fluorine-containing polymer containing the repeating unit of formula (1) and the repeating unit of formula (2),
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公开(公告)号：US11958801B2
公开(公告)日：2024-04-16
申请号：US18154068
申请日：2023-01-13
发明人： Akihiro Baba , Takeshi Kinsho , Yusuke Nagae
IPC分类号： C07C67/08 , C07C69/145
CPC分类号： C07C67/08 , C07C69/145
摘要： A process for process for preparing 6-isopropenyl-3-methyl-9-decenyl acetate of the following formula (3), wherein Ac represents an acetyl group, the process comprising steps of: preparing a nucleophilic reagent, 5-isopropenyl-2-methyl-8-nonenyl compound, of the following general formula (1): wherein M1 represents Li, MgZ1, ZnZ1, Cu, CuZ1, or CuLiZ1, wherein Z1 represents a halogen atom or a 5-isopropenyl-2-methyl-8-nonenyl group, from a 5-isopropenyl-2-methyl-8-nonenyl halide compound of the following general formula (4): wherein X1 represents a halogen atom; subjecting the nucleophilic reagent (1), 5-isopropenyl-2-methyl-8-nonenyl compound, to an addition reaction with at least one electrophilic reagent selected from the group consisting of formaldehyde, paraformaldehyde, and 1,3,5-trioxane, followed by a hydrolysis reaction to form 6-isopropenyl-3-methyl-9-decenol of the following formula (2); and acetylating 6-isopropenyl-3-methyl-9-decenol (2) to form 6-isopropenyl-3-methyl-9-decenyl acetate (3).
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公开(公告)号：US20240116846A1
公开(公告)日：2024-04-11
申请号：US18274414
申请日：2022-01-27
申请人： OQ CHEMICALS GMBH
发明人： Christoph BALZAREK , Eduard RAIS , Jens KUBITSCHKE , Roswitha STEIN , Julia ZIMMERER , Alessa HINZMANN
IPC分类号： C07C67/08
CPC分类号： C07C67/08
摘要： The present invention relates to a process for the preparation of mixed polyol-carboxylic acid esters having a molecular weight of greater than or equal to 200 g/mol and less than or equal to 1000 g/mol, wherein a polyol is reacted in an at least two-step reaction with different monocarboxylic acids in the form of monocarboxylic acids or of monocarboxylic acid anhydrides, wherein the different monocarboxylic acids are reacted with the polyol in the order of their reactivity in the esterification reaction, starting with the lowest reactivity, wherein the monocarboxylic acids with the lower reactivity are reacted at least partly as monocarboxylic acid anhydride and the monocarboxylic acid with the highest reactivity is reacted thereafter as monocarboxylic acid with the polyol. Furthermore, the present invention relates to the use of the process for the preparation of mixed polyol esters.
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公开(公告)号：US20240116031A1
公开(公告)日：2024-04-11
申请号：US18524541
申请日：2023-11-30
发明人： Akio Hayashi , Yuuki Tsujimoto , Toshio Hasegawa , Kazufumi Nishida , Masaya Fujisue , Wataru Ninomiya
CPC分类号： B01J21/066 , B01J23/04 , B01J35/613 , B01J35/615 , B01J35/617 , B01J37/0209 , B01J37/08 , C07C67/08 , C07C2521/06 , C07C2523/04
摘要： An object of the present invention is to provide a catalyst that enables production of an unsaturated carboxylic acid and/or unsaturated carboxylic acid ester represented by methyl methacrylate with high selectivity. The object is achieved by a catalyst including: one or more elements selected from boron, magnesium, zirconium, hafnium, and titanium; one or more elements selected from alkali metal elements; and silica; the catalyst having a peak height ratio I2/I1 of 0 to 1.2, wherein I1 represents the peak height at 417±10 cm−1, and I2 represents the peak height at 1050±10 cm−1, as obtained by Raman spectroscopy.
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公开(公告)号：US11951451B2
公开(公告)日：2024-04-09
申请号：US17335675
申请日：2021-06-01
IPC分类号： B01J19/24 , B01J19/00 , C07C67/03 , C07C67/08 , C07C67/39 , C07C69/58 , C10L1/02 , C11C3/00 , F28D1/047 , F28D1/06 , F28D7/04 , F28D7/08 , F28D7/10
CPC分类号： B01J19/24 , B01J19/0053 , B01J19/2415 , B01J19/242 , B01J19/2425 , B01J19/243 , C07C67/03 , C07C67/08 , C07C67/39 , C10L1/026 , C11C3/003 , F28D1/0472 , F28D1/06 , F28D7/04 , F28D7/085 , F28D7/106 , B01J2219/00083 , B01J2219/00085 , B01J2219/00087 , B01J2219/00099 , B01J2219/185 , B01J2219/1943 , C07C69/58 , C10L2200/0469 , C10L2290/06 , Y02E50/10 , C07C67/03 , C07C69/58
摘要： A reactor and process for the production of bio-diesel. The reactor includes one or more coiled reaction lines. The lines are positioned within a tank containing a heat transfer media such as molten salt, maintained at about 750 F. A pump circulates the media within the tank. An emulsion of alcohol; refined feed stock, including glycerides and/or fatty acids; and preferably water is pumped through the reaction lines at temperatures and pressures sufficient to maintain the alcohol in a super-critical state. The curvature of the coils, pump pulsing, and the flow rate of the emulsion keep the emulsion in a turbulent state while in the reactor, ensuring thorough mixing of the alcohol and feed stock. The alcohol reacts with the glycerides and fatty acids to form bio-diesel. The reaction is fast, efficient with regard to energy input and waste generation, and requires minimal alcohol.
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公开(公告)号：US20240109832A1
公开(公告)日：2024-04-04
申请号：US18252655
申请日：2021-11-09
发明人： Jin-Quan YU , Zhe ZHUANG
IPC分类号： C07C51/353 , C07C29/149 , C07C67/08 , C07D311/58
CPC分类号： C07C51/353 , C07C29/149 , C07C67/08 , C07D311/58 , C07C2602/08 , C07C2602/10 , C07C2603/26
摘要： Disclosed herein is a process for achieving a palladium-catalyzed cyclative C(sp3)-H/C(sp2)-H coupling reaction using a native free carboxylic acid as a directing group, an amino acid ligand, and oxidant. The process is useful for synthesizing a range of biologically important scaffolds, including tetralins, chromanes, and indanes.
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公开(公告)号：US11939287B2
公开(公告)日：2024-03-26
申请号：US17849171
申请日：2022-06-24
摘要： The present disclosure provides methods and processes for the recovery of compounds (e.g., pendant groups) from polymeric materials, as well as methods for recycling and reusing such compounds by synthetically converting a recovered compound to building blocks that can be used in, e.g., curable resins for the fabrication of new devices, such as medical devices (e.g., orthodontic appliances).
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公开(公告)号：US20230372214A1
公开(公告)日：2023-11-23
申请号：US18318390
申请日：2023-05-16
发明人： Christian Hartung , Jan Marian von Hof , Matthias Mentel , Achim Friedrich , Jochen Kleinen , Joachim Venzmer , Juergen Meyer , Hans Henning Wenk , Sven Klare
CPC分类号： A61K8/375 , C07C67/08 , A61Q17/04 , A61K2800/95
摘要： Polyglycerol partial esters based on mono- and dicarboxylic acids are useful, in cosmetics in particular. The polyglycerol partial esters can be produced by esterification of a polyglycerol with a carboxylic acid mixture containing at least one short-chain dicarboxylic acid, at least one long-chain dicarboxylic acid, and at least one long-chain, saturated and linear monocarboxylic acid.
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公开(公告)号：US20230339839A1
公开(公告)日：2023-10-26
申请号：US18094155
申请日：2023-01-06
发明人： Zhonglei Meng , Rongxiu Qin , Shouna Gao , Guojiao Hu , Rusi Wen , Zhongqiu Liao , Zhongyun Liang , Lihong Hu , Yonghong Zhou
CPC分类号： C07C67/08 , C07C67/54 , C07C67/48 , B01J37/009 , B01J21/02 , B01D17/042 , B01D3/10
摘要： A synthesis method of alpha-hydroxycarboxylic acid ester is provided. In the method, an alpha-hydroxycarboxylic acid and an alcohol are taken as raw materials, one or more of boric acid, metaboric acid, pyroboric acid, and boric anhydride is taken as a catalyst, and one of cyclohexane, toluene, benzene, and alcohols is taken as a water-carrying agent. A reaction temperature is kept in range of 100-160° C., produced water is separated by an oil-water separator, and the alpha-hydroxycarboxylic acid ester is synthesized directly. After an esterification reaction, the water-carrying agent and unreacted alcohol are distilled by vacuum fractionation to obtain a crude product, and refined alpha-hydroxycarboxylic acid ester is obtained by performing neutralization, water washing, and vacuum rectification on the crude product. The alpha-hydroxycarboxylic acid ester prepared by the method has high purity and light color, and can be used as green solvent, surfactant, chiral resolution agent and plasticizer.
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