公开(公告)号：US20200157041A1

公开(公告)日：2020-05-21

申请号：US16717165

申请日：2019-12-17

申请人： Vitaworks IP, LLC

发明人： Songzhou Hu ,  Zhen Song

IPC分类号： C07C227/40 ,  C07C51/42 ,  B01D9/00 ,  B01D11/04 ,  C07C51/48 ,  C07C227/42 ,  C07C209/86 ,  C07C51/44 ,  C07C51/43 ,  C07C51/47 ,  C07C51/46 ,  B01D3/36

摘要： There is disclosed a process for the separation of long chain amino acid and long chain dibasic acid, comprising: (1) adding an ammonium salt to the mixture of alkali salts of long chain amino acid and long chain dibasic acid; (2) heating to remove ammonia; and (3) separating long chain amino acid by solid-liquid separation; and (4) acidifying the salt of long chain dibasic acid with an acid to separate long chain dibasic acid.

公开(公告)号：US10544077B2

公开(公告)日：2020-01-28

申请号：US16043329

申请日：2018-07-24

申请人： Eastman Chemical Company

发明人： Scott Donald Barnicki ,  Robert Thomas Hembre ,  Sumit Chakraborty ,  Vickie Haygood Osborne ,  Michael Richard Laningham ,  Stijn Van de Vyver

IPC分类号： C07C51/09 ,  C07C51/12 ,  C07C51/44 ,  C07C51/46

摘要： Disclosed is a process for recovering formic acid from a formate ester that allows for recovery of a formic acid product comprising greater than 75 wt. % formic acid. Disclosed is also a process for producing formic acid by carbonylating a carrier alcohol, hydrolyzing the formate ester of the carrier alcohol, and recovering a formic acid product comprising greater than 70 wt. % formic acid. Discloses are carrier alcohols that enable more favorable hydrolysis equilibriums and/or distillation sequences.

公开(公告)号：US10407373B2

公开(公告)日：2019-09-10

申请号：US14890475

申请日：2014-05-15

申请人： Georgia-Pacific LLC

发明人： Gerardus Wilhelmus Adrianus Hangx ,  Gerardus Johannes Paulus Krooshof ,  Arie De Rijke

IPC分类号： B01D3/36 ,  C07C53/02 ,  C07C51/42 ,  C07C51/44 ,  C07C51/46 ,  C07C51/48

摘要： The invention relates to a process to separate formic acid from methyltetrahydrofuran (MTHF) said process comprising subjecting a composition comprising formic acid and MTHF to distillation, characterized in that the process comprises adding water to said distillation. This allows for cost-efficient recovery and recycling of MTHF, for example in process to produce and recover formic acid from a biomass hydrolysate.

公开(公告)号：US10370321B2

公开(公告)日：2019-08-06

申请号：US15326675

申请日：2015-07-17

申请人： Tricoya Technologies Ltd

发明人： Benjamin Thomas Painter ,  Stephen John Benstead

IPC分类号： C07C51/46 ,  B01J19/24 ,  B01D3/14 ,  C08B3/06 ,  C07C51/44 ,  C07C51/56 ,  C08H8/00 ,  B27K3/34

摘要： Disclosed is the integration of the production of acetic anhydride from ketene, and the acetylation of wood using acetylation fluid comprising acetic acid and acetic anhydride. The invention involves combining acetic acid obtained from distillation of acetylation fluid with a residual aqueous acetic acid stream as obtained from ketene production.

公开(公告)号：US10350539B2

公开(公告)日：2019-07-16

申请号：US16082424

申请日：2017-12-05

申请人： LG CHEM, LTD.

发明人： Jong Hun Song ,  Se Won Baek ,  Yoon Jae Min ,  Jae Yul Kim

IPC分类号： C07C51/43 ,  B01D53/14 ,  C07C51/46 ,  C07C51/48 ,  B01D11/04 ,  B01D3/36 ,  C07C57/04

摘要： The present invention relates to a method of recovering (meth)acrylic acid and an apparatus used for the recovery method. The recovery method according to the present invention discharges each (meth)acrylic acid aqueous solution of different concentrations at a (meth)acrylic acid absorption tower, and uses an extraction solvent of a specific ratio in the step of extracting (meth)acrylic acid, thus enabling the operation of a continuous process of recovering (meth)acrylic acid that can secure a high (meth)acrylic acid recovery rate, and can simultaneously significantly reduce purification energy cost.

公开(公告)号：US20190002397A1

公开(公告)日：2019-01-03

申请号：US15684740

申请日：2017-08-23

申请人： VITAWORKS IP, LLC

发明人： Songzhou HU

IPC分类号： C07C227/40 ,  B01D9/00 ,  B01D11/04 ,  B01D3/36 ,  C07C51/46 ,  C07C51/47 ,  C07C51/43 ,  C07C51/44 ,  C07C209/86 ,  C07C227/42 ,  C07C51/48

摘要： There is disclosed a process for the separation of long chain dibasic acid and fatty acid, comprising: (1) reacting a mixture of long chain dibasic acid and fatty acid with ammonium hydroxide to form an insoluble ammonium salt of fatty acid and a soluble ammonium salt of long chain dibasic acid; (2) recovering the insoluble ammonium salt of fatty acid; and (3) adding an acid to the mother liquor of step (2) to obtain the long chain dibasic acid.

公开(公告)号：US20170081268A1

公开(公告)日：2017-03-23

申请号：US15311541

申请日：2015-05-13

申请人： BASF SE

发明人： Tim Blaschke ,  Ortmund Lang ,  Marta Zajaczkowski-Fischer ,  Marco Hartmann

IPC分类号： C07C51/46 ,  C07C51/377 ,  C07C51/43

CPC分类号： C07C51/46 ,  C07C51/377 ,  C07C51/43 ,  C07C57/04

摘要： The invention relates to a process for dehydrating aqueous 3-hydroxypropionic acid to acrylic acid, wherein an aqueous mixture of 3-hydroxypropionic acid and oligomeric 3-hydroxypropionic acid is converted to acrylic acid in the liquid phase in a first step and aqueous acrylic acid is distilled out of the liquid phase, and the aqueous acrylic acid is separated by distillation into an acrylic acid-rich phase and a water-rich phase in a second step.

公开(公告)号：US09193661B2

公开(公告)日：2015-11-24

申请号：US14151112

申请日：2014-01-09

申请人： Celanese International Corporation

发明人： Craig J. Peterson ,  Josefina T. Chapman ,  Ilias S. Kotsianis ,  Sean Mueller ,  Dick Nagaki ,  Tianshu Pan

IPC分类号： C07C51/353 ,  C07C51/44 ,  C07C51/42 ,  C07C51/46 ,  C07C51/48 ,  C07C51/377

CPC分类号： C07C51/44 ,  C07C51/353 ,  C07C51/377 ,  C07C51/42 ,  C07C51/46 ,  C07C51/48 ,  Y02P20/582 ,  C07C57/04

摘要： In one embodiment, the invention is to a process for producing an acrylate product. The process comprises the step of providing a crude product stream comprising the acrylate product and an alkylenating agent. The process further comprises the step of separating at least a portion of the crude product stream to form an alkylenating agent stream and an intermediate product stream. The alkylenating agent stream comprises at least 1 wt % alkylenating agent and the intermediate product stream comprises acrylate product.

摘要翻译： 在一个实施方案中，本发明涉及一种生产丙烯酸酯产物的方法。 该方法包括提供包含丙烯酸酯产物和亚烷基化试剂的粗产物流的步骤。 该方法还包括分离至少一部分粗产物流以形成亚烷基化剂流和中间产物流的步骤。 亚烷基化剂流包含至少1重量％的亚烷基化剂，中间产物流包含丙烯酸酯产物。

公开(公告)号：US20150329462A1

公开(公告)日：2015-11-19

申请号：US14812113

申请日：2015-07-29

申请人： The Procter & Gamble Company

发明人： Jane Ellen Godlewski ,  Janette Villalobos ,  Juan Estaban Velasquez ,  Dimitris Ioannis Collias

IPC分类号： C07C51/48 ,  C07C51/46 ,  C07C57/04 ,  C07C51/44 ,  C07C51/47

CPC分类号： C07C51/48 ,  B01J27/1806 ,  C07C51/377 ,  C07C51/44 ,  C07C51/46 ,  C07C51/47 ,  C07C57/04

摘要： Processes for the purification of bio-based acrylic acid to crude and glacial acrylic acid are provided. The bio-based acrylic acid is produced from hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof. The purification includes some or all of the following processes: extraction, drying, distillation, and melt crystallization. The produced glacial or crude acrylic acid contains hydroxypropionic, hydroxypropionic acid derivatives, or mixtures thereof as an impurity.

摘要翻译： 提供了将生物基丙烯酸纯化成粗制和冰丙烯酸的方法。 生物基丙烯酸由羟基丙酸，羟基丙酸衍生物或其混合物制备。 纯化包括一些或全部以下方法：萃取，干燥，蒸馏和熔融结晶。 产生的冰或粗丙烯酸含有羟基丙酸，羟基丙酸衍生物或其作为杂质的混合物。

公开(公告)号：US20150315116A1

公开(公告)日：2015-11-05

申请号：US14439814

申请日：2013-10-29

申请人： Finbar Gerald MCDONNELL ,  Henry Ray CONNOR ,  Ronojoy GOHO ,  INVISTA TECHNOLOGIES S.A.R.L.

发明人： Finbar Gerald MCDONNELL ,  Harry Ray CONNOR ,  Ronojoy GOHO

IPC分类号： C07C51/48 ,  C07C51/46 ,  B01D3/36

CPC分类号： C07C51/48 ,  B01D3/36 ,  C07C51/265 ,  C07C51/46 ,  C07C63/26 ,  C07C63/04

摘要： The invention relates to a process for producing terephthalic acid and for purifying the mother liquor resulting from said process. Useful compounds can be extracted from the mother liquor and the purified mother liquor can be returned for use in the process. Advantageously, certain parameters of the mother liquor purification method are selected such that the purification provides an economic benefit as compared with other purification methods.

摘要翻译： 本发明涉及一种生产对苯二甲酸并用于净化由所述方法产生的母液的方法。 可以从母液中提取有用的化合物，并且可以将纯化的母液返回以用于该方法。 有利地，选择母液纯化方法的某些参数，使得与其它纯化方法相比，纯化提供了经济效益。