公开(公告)号：US20170260120A1

公开(公告)日：2017-09-14

申请号：US15510148

申请日：2016-11-17

申请人： DAICEL CORPORATION

发明人： Masahiko SHIMIZU ,  Ryuji SAITO ,  Hiroyuki MIURA

IPC分类号： C07C51/38 ,  C07C51/44 ,  C07C51/12

CPC分类号： C07C51/38 ,  C07C51/087 ,  C07C51/12 ,  C07C51/44 ,  C07C53/08

摘要： A method for producing acetic acid includes subjecting an acetic acid solution to an acetic anhydride decreasing treatment. The acetic acid solution is present typically in, or downstream from, a distillation column (5) of acetic acid production equipment (X), includes acetic acid in a concentration of 90 mass percent or more, acetic anhydride, and water, and is in such a state that an equilibrium concentration of acetic anhydride is higher than an acetic anhydride concentration. The acetic anhydride decreasing treatment includes at least one of water concentration increasing and temperature lowering so as to bring the acetic acid solution into such a state that the equilibrium concentration of acetic anhydride is lower than the acetic anhydride concentration. The acetic acid production method is suitable for yielding a high-purity acetic acid product.

公开(公告)号：US20090275777A1

公开(公告)日：2009-11-05

申请号：US12349572

申请日：2009-01-07

申请人： Wout Fornara ,  Martin Gout ,  Charles Edwan Sumner, JR.

发明人： Wout Fornara ,  Martin Gout ,  Charles Edwan Sumner, JR.

IPC分类号： C07C51/16

CPC分类号： C07B41/08 ,  C07C51/087 ,  C07C51/265 ,  D21C11/0007 ,  C07C53/08 ,  C07C63/26

摘要： Methods and apparatus for producing a carboxylic acid employing a solvent from esterification of lignocellulosic materials. An acid-containing composition from esterification of lignocellulosic materials can be employed in the oxidation of para-xylene to terephthalic acid. The acid-containing composition can comprise acetic acid, acetic anhydride, and one or more terpenes.

摘要翻译： 用木质纤维素材料的酯化制造使用溶剂的羧酸的方法和装置。 在将对二甲苯氧化成对苯二甲酸时，可以使用来自木质纤维素材料的酯化的含酸组合物。 含酸组合物可以包含乙酸，乙酸酐和一种或多种萜烯。

公开(公告)号：US06054600A

公开(公告)日：2000-04-25

申请号：US307589

申请日：1999-05-07

申请人： T. Kirk Dougherty ,  John J. Drab ,  O. Glenn Ramer

发明人： T. Kirk Dougherty ,  John J. Drab ,  O. Glenn Ramer

IPC分类号： B05D5/12 ,  C07F7/00 ,  C07F9/00 ,  C07F19/00

CPC分类号： C07C59/125 ,  C07C51/087 ,  C07C51/56

摘要： Novel metal acid salt complexes are provided comprising (1) a metal selected from Group IV and Group V metals and (2) a polyether acid, along with a process for making the salt complexes. The process comprises: (a) preparing a polyether acid anhydride from the corresponding polyether acid; and (b) combining a metal alkoxide containing the Group IV or Group V metal with the polyether acid anhydride to form the metal acid salt complex. The resulting Group IV and Group V metal acid salt complexes enable the production of improved thin film, thick film, and bulk ceramic metal oxides and mixed metal oxides for a number of applications, including ferroelectric, electrooptic, paraelectric, and piezoelectric devices, using liquid soluble precursors which are soluble in far less toxic solvents than in the prior art. The soluble ceramic precursors may also be used as reactive binders and shape-forming aids in conventional ceramic processing.

摘要翻译： 提供新的金属酸盐络合物，其包含（1）选自第IV族和第V族金属的金属和（2）聚醚酸，以及制备盐络合物的方法。 该方法包括：（a）由相应的聚醚酸制备聚醚酸酐; 和（b）将含有IV族或V族金属的金属醇盐与聚醚酸酐组合以形成金属酸盐络合物。 所得到的IV族和V族金属酸盐络合物使得能够生产用于许多应用的改进的薄膜，厚膜和块状陶瓷金属氧化物和混合金属氧化物，包括铁电，电光，顺电和压电器件，使用液体 可溶于远远低于现有技术的毒性溶剂的可溶性前体。 可溶性陶瓷前体也可以用作常规陶瓷加工中的反应性粘合剂和成形助剂。

公开(公告)号：US12110473B2

公开(公告)日：2024-10-08

申请号：US17511419

申请日：2021-10-26

申请人： Nissui Corporation

发明人： Hideaki Yamaguchi ,  Nobushige Doisaki ,  Seizo Sato ,  Yuhei Kosuge

IPC分类号： C11C1/04 ,  A23D9/007 ,  A23L33/12 ,  A61K31/201 ,  A61K31/202 ,  C07C51/087 ,  C07C57/12 ,  C07C69/58 ,  C11C3/00

CPC分类号： C11C1/04 ,  A23D9/007 ,  A23L33/12 ,  A61K31/201 ,  A61K31/202 ,  C07C51/087 ,  C07C57/12 ,  C07C69/58 ,  C11C3/00 ,  A23V2002/00

摘要： Provided is a free-polyunsaturated-fatty-acid-containing composition that has a total metal content of 0.1 ppm or less and that comprises at least one free polyunsaturated fatty acid having 20 or more carbon atoms, in an amount that is at least 80.0% of the amount of fatty acids in the composition; and a method for manufacturing a free-polyunsaturated-fatty-acid-containing composition, comprising: providing a raw material composition containing at least one polyunsaturated fatty acid having 20 or more carbon atoms; performing a hydrolysis treatment on a reaction solution prepared by combining the provided raw material composition, a lower alcohol, water having a total metal content of 0.01 ppm or less, and an alkali catalyst; and limiting the contact between the reaction composition and the metal after the hydrolysis treatment so that the product T [cm2×days] of the contact surface area [cm2] per 1 g and the contact time [days] between the composition and the metal is 100 or less.

公开(公告)号：US20180141890A1

公开(公告)日：2018-05-24

申请号：US15863484

申请日：2018-01-05

申请人： Celanese International Corporation

发明人： Ronald D. Shaver ,  Yaw-Hwa Liu ,  Mark O. Scates

IPC分类号： C07C51/44 ,  C07C51/47 ,  C07C51/087 ,  C07C51/56 ,  C07C51/12 ,  C07C53/08 ,  C07C53/12

CPC分类号： C07C51/44 ,  C07C51/087 ,  C07C51/12 ,  C07C51/47 ,  C07C51/487 ,  C07C51/56 ,  C07C53/08 ,  C07C53/12

摘要： Processes for purifying acetic acid by distilling a process in a column in which acetic anhydride is formed in the lower portion of the column. The product stream withdrawn from the column comprises acetic acid, water at a concentration of no more than 0.2 wt. %, and acetic anhydride at a concentration of no more than 600 wppm. The process further comprises hydrating the acetic anhydride in the product stream to form a purified acetic acid product comprising acetic anhydride at a concentration of no more than 50 wppm.

公开(公告)号：US09908835B2

公开(公告)日：2018-03-06

申请号：US15348466

申请日：2016-11-10

申请人： CELANESE INTERNATIONAL CORPORATION

发明人： Ronald D. Shaver ,  Yaw-Hwa Liu ,  Mark O. Scates

IPC分类号： C07C51/12 ,  C07C51/44 ,  C07C51/087 ,  C07C51/56 ,  C07C51/47

CPC分类号： C07C51/44 ,  C07C51/087 ,  C07C51/12 ,  C07C51/47 ,  C07C51/487 ,  C07C51/56 ,  C07C53/08 ,  C07C53/12

摘要： Processes for purifying acetic acid by distilling a process in a column in which acetic anhydride is formed in the lower portion of the column. The product stream withdrawn from the column comprises acetic acid, water at a concentration of no more than 0.2 wt. %, and acetic anhydride at a concentration of no more than 600 wppm. The process further comprises hydrating the acetic anhydride in the product stream to form a purified acetic acid product comprising acetic anhydride at a concentration of no more than 50 wppm.

公开(公告)号：US20030120111A1

公开(公告)日：2003-06-26

申请号：US10226901

申请日：2002-08-23

申请人： Board of Trustees operating Michigan State University

发明人： Dennis J. Miller ,  Dushyant Shekhawat ,  Kirthivasan Nagarajan ,  James E. Jackson

IPC分类号： C07C051/087 ,  C07D307/60

CPC分类号： C07D307/60 ,  C07C51/087 ,  C07C51/353 ,  C07C51/567 ,  C07C57/155 ,  C07C57/13

摘要： Processes for producing citraconic anhydride and citraconic acid using porous materials with specific surface acidities and surface areas are described. The preferred catalyst is a porous gamma alumina. Itaconic acid is produced from citraconic acid. Itaconic acid is an intermediate to a variety of compounds including polymers.

公开(公告)号：US06538154B2

公开(公告)日：2003-03-25

申请号：US10013204

申请日：2001-12-07

申请人： Walter Kuhn ,  Norbert Richter ,  Lutz Walther

发明人： Walter Kuhn ,  Norbert Richter ,  Lutz Walther

IPC分类号： C07C6976

CPC分类号： C07C67/00 ,  C07C51/087 ,  C07C51/353 ,  C07C67/12 ,  C07C57/44 ,  C07C57/42 ,  C07C69/618

摘要： The present invention relates to a process for the synthesis of cinnamic esters and/or cinnamic acids by condensation of aldehydes with carboxylic anhydrides, using iron(II) salts as catalyst.

摘要翻译： 本发明涉及通过使用铁（II）盐作为催化剂将醛与羧酸酐缩合合成肉桂酸酯和/或肉桂酸的方法。

公开(公告)号：USRE25430E

公开(公告)日：1963-07-30

申请号：US25430D

IPC分类号： C07C51/087 ,  C07C51/353 ,  C07C51/363 ,  C07C51/567

CPC分类号： C07C51/363 ,  C07C51/087 ,  C07C51/353 ,  C07C51/567 ,  C07C61/24 ,  C07C61/22 ,  C07C61/40

公开(公告)号：US20140187812A1

公开(公告)日：2014-07-03

申请号：US13827124

申请日：2013-03-14

申请人： EASTMAN CHEMICAL COMPANY

发明人： Gregory Abbott Wellman, JR. ,  Joseph Nathaniel Bays ,  Robert Sterling Kline

IPC分类号： B01J19/00 ,  C07C51/573 ,  C07C67/00

CPC分类号： B01J19/00 ,  C07C51/087 ,  C07C51/44 ,  C07C51/573 ,  C07C67/00 ,  C07C53/08 ,  C07C53/12

摘要： The invention provides systems and processes for concentrating acetic acid and acetic anhydride streams. The systems allow operation of equipment used for such concentrations in two or more modes of operation. At least one mode is intended to produce a concentrated or purified acetic acid stream. At least one other mode is intended to produce a concentrated or purified acetic anhydride stream.

摘要翻译： 本发明提供用于浓缩乙酸和乙酸酐流的系统和方法。 这些系统允许在两种或更多种操作模式中操作用于这种浓度的设备。 至少一种模式旨在产生浓缩或纯化的乙酸流。 至少一种其他模式旨在产生浓缩或纯化的乙酸酐流。