公开(公告)号：US08895683B2

公开(公告)日：2014-11-25

申请号：US13896458

申请日：2013-05-17

申请人： Evonik Degussa GmbH

发明人： Franz-Felix Kuppinger ,  Axel Hengstermann ,  Guido Stochniol ,  Gunther Bub ,  Jurgen Mosler ,  Andreas Sabbagh

IPC分类号： C08F20/06 ,  C08F120/06 ,  C07C51/377 ,  C07C51/43

CPC分类号： C08F120/06 ,  C07C51/377 ,  C07C51/43 ,  Y02P20/127 ,  C07C57/04

摘要： In one aspect, a process for the preparation of a superabsorbent polymer is described herein. In some embodiments, the process comprises (I) preparing acrylic acid, wherein the process comprises (a1) provision of a fluid F1 having a composition comprising from about 5 to about 20 wt. % of hydroxypropionic acid, salts thereof, or mixtures thereof; from about 0.1 to about 5 wt. % of inorganic salts; from about 0.1 to about 30 wt. % of organic compounds which differ from hydroxypropionic acid; from 0 to about 50 wt. % of solids; and from about 20 to about 90 wt. % of water; (a2) dehydration of said hydroxypropionic acid to give a fluid F2 containing acrylic acid; and (a3) purification of said fluid F2 to give a purified acrylic acid phase comprising acrylic acid having a purity of at least 70 wt. %; and (II) polymerizing the acrylic acid of (I) to form a superabsorbent polymer.

摘要翻译： 一方面，本文描述了制备超吸收性聚合物的方法。 在一些实施方案中，该方法包括（I）制备丙烯酸，其中该方法包括（a1）提供具有包含约5至约20wt。 ％的羟基丙酸，其盐或其混合物; 约0.1至约5wt。 ％的无机盐; 约0.1至约30wt。 ％羟基丙酸不同的有机化合物的％; 0至约50wt。 ％的固体; 和约20至约90wt。 ％的水; （a2）所述羟基丙酸的脱水，得到含有丙烯酸的流体F2; 和（a3）纯化所述流体F2以得到包含纯度至少为70重量％的丙烯酸的纯化丙烯酸相。 ％; 和（II）使（I）的丙烯酸聚合以形成超吸收性聚合物。

公开(公告)号：US10479751B2

公开(公告)日：2019-11-19

申请号：US14915929

申请日：2014-08-11

申请人： EVONIK DEGUSSA GMBH

发明人： Jürgen Mosler ,  Christian Psiorz ,  Franz-Felix Kuppinger ,  Raphael Schriewer ,  Arnd Bruhns ,  Armin Rix ,  Peter Kreis ,  Ralf Meier ,  James Edward Elder

IPC分类号： C07C51/48 ,  C07C51/25 ,  B01J19/30 ,  B01D3/14 ,  B01L3/16 ,  B01D3/16 ,  B01D3/00 ,  B01D3/22 ,  B01J10/00 ,  C07C57/04

摘要： The present invention provides an apparatus comprising a feed arranged below the middle of the apparatus, a quenching agent inlet arranged above the feed, an outlet arranged below the feed and a draw arranged above the quenching agent inlet, the apparatus having a region provided with one or more packing elements, wherein at least one means which ensures the formation of a liquid layer having a height of at least 1 cm is present between the quenching agent inlet and a packing element present between the quenching agent inlet and feed. The present invention also provides a process for preparing acrylic acid, which includes a step of oxidizing acrolein, wherein the reaction mixture obtained in this oxidation is contacted with water as quenching agent in an inventive apparatus, and a composition obtainable as bottom product in the process according to the invention, comprising acrylic acid and water.

公开(公告)号：US09309180B2

公开(公告)日：2016-04-12

申请号：US14650089

申请日：2014-01-14

申请人： Evonik Degussa GmbH

发明人： Franz-Felix Kuppinger ,  Florian Klasovsky ,  Alexander May ,  Min-Zae Oh

IPC分类号： C07C51/377 ,  C08F20/06

CPC分类号： C07C51/377 ,  C08F20/06 ,  C07C57/04

摘要： Method for producing acrylic acid by dehydration of a C3 hydroxycarboxylic acid, characterized in that dehydration is achieved by contacting, at a temperature of more than 150° C., the hydroxycarboxylic acid with a mixture which is liquid at this temperature and comprises at least one metal salt of a C3 hydroxycarboxylic acid, and water.

摘要翻译： 通过使C3羟基羧酸脱水生产丙烯酸的方法，其特征在于脱水是通过使羟基羧酸与在该温度下为液体的混合物在大于150℃的温度下接触而实现的，并且包含至少一种 C3羟基羧酸的金属盐和水。

公开(公告)号：US20160257637A1

公开(公告)日：2016-09-08

申请号：US14915929

申请日：2014-08-11

申请人： EVONIK DEGUSSA GMBH

发明人： Jürgen Mosler ,  Christian Psiorz ,  Franz-Felix Kuppinger ,  Raphael Schriewer ,  Arnd Bruhns ,  Armin Rix ,  Peter Kreis ,  Ralf Meier ,  James Edward Elder

IPC分类号： C07C51/25 ,  B01D3/22 ,  B01D3/00 ,  C07C57/04 ,  B01J10/00

CPC分类号： C07C51/252 ,  B01D3/009 ,  B01D3/143 ,  B01D3/16 ,  B01D3/163 ,  B01D3/22 ,  B01J10/00 ,  B01J19/30 ,  B01J2219/3325 ,  C07C51/48 ,  C07C57/04

摘要： The invention relates to a device comprising a feed which is arranged below the center of the device, a quenching agent inlet which is arranged above the feed, an outlet which is arranged below the feed, and a discharge which is arranged above the quenching agent inlet, said device having a region provided with one or more packets between the quenching agent inlet and the feed. The device is characterized in that at least one means is provided between the quenching agent inlet and a packet provided between the quenching agent inlet and the feed, said means ensuring the formation of a liquid layer with a height of at least 1 cm. The invention further relates to a method for producing acrylic acid, having a step of oxidizing acrolein, wherein the reaction mixture obtained from the oxidation process is brought into contact with water as the quenching agent in a device according to the invention, and to a composition which can be obtained as a bottom product in the method according to the invention, said composition containing acrylic acid and water.

摘要翻译： 本发明涉及一种装置，其包括布置在装置中心下方的进料，设置在进料上方的淬火剂入口，布置在进料下方的出口和布置在淬火剂入口上方的排出口 所述装置具有在淬火剂入口和进料之间设置有一个或多个分组的区域。 该装置的特征在于，在淬火剂入口和设置在淬火剂入口和进料之间的包装件之间提供至少一个装置，所述装置确保形成具有至少1cm的高度的液体层。 本发明还涉及一种制备丙烯酸的方法，其具有氧化丙烯醛的步骤，其中从氧化工艺获得的反应混合物作为本发明的装置中的猝灭剂与水接触， 其可以作为根据本发明的方法的底部产物获得，所述组合物含有丙烯酸和水。

公开(公告)号：US20140180234A1

公开(公告)日：2014-06-26

申请号：US14195104

申请日：2014-03-03

申请人： EVONIK DEGUSSA GMBH

发明人： Gunther Bub ,  Jurgen Mosler ,  Andreas Sabbagh ,  Franz-Felix Kuppinger ,  Franck Furno

IPC分类号： C08F4/30

CPC分类号： C08F4/30 ,  C08F2/00 ,  C12P7/40 ,  C12P7/42 ,  Y10T428/31855

摘要： The present invention relates to a process for the production of polymers, such as water-absorbing polymer structures, by radical polymerization of acrylic acid, whereby the acrylic acid has been obtained by a synthesis process which comprises as a process step the splitting of an organic material by means of an enzyme or at least one component of an enzyme. The invention also relates to the water-absorbing polymers obtainable by this process, water-absorbing polymers which are based to at least about 25 wt % upon partially neutralized acrylic acid, a composite, a process for the production of a composite, the composite obtainable by this production, the use of acrylic acid in the production of polymers, preferably in the production of water-absorbing polymer structures, a device for the production of acrylic acid, and a process for the production of acrylic acid.

摘要翻译： 本发明涉及通过丙烯酸的自由基聚合制备聚合物如吸水聚合物结构的方法，由此通过合成方法获得丙烯酸，其包括作为工艺步骤将有机物分解 材料通过酶或至少一种酶组分。 本发明还涉及通过该方法可获得的吸水聚合物，在部分中和的丙烯酸上基于至少约25重量％的吸水聚合物，复合材料，制备复合材料的方法，可获得的复合材料 通过这种生产，在生产聚合物中使用丙烯酸，优选在生产吸水聚合物结构，生产丙烯酸的装置和生产丙烯酸的方法。