Reactor Design for Reacting Organochlorosilanes and Silicon Tetrachloride to Obtain Hydrogen-Containing Chlorosilanes
    51.
    发明申请
    Reactor Design for Reacting Organochlorosilanes and Silicon Tetrachloride to Obtain Hydrogen-Containing Chlorosilanes 审中-公开
    用于反应有机氯硅烷和四氯化硅获得含氢氯硅烷的反应器设计

    公开(公告)号:US20140286848A1

    公开(公告)日:2014-09-25

    申请号:US14005413

    申请日:2012-01-27

    IPC分类号: C01B33/107

    CPC分类号: C01B33/10747 C01B33/1071

    摘要: The invention relates to a process for producing hydrogen-containing chlorosilanes by reducing Si-based deposits of solid material during the operation of a pressurised reactor comprising one or more reaction spaces, wherein at least one organochlorosilane is reacted with hydrogen in at least one of these reaction spaces for at least some of the time, characterized in that at least one of the optionally two or more reaction spaces in which this reaction takes place is supplied with additional HCl for at least some of the time. The additional HCl is preferably produced by hydrodehalogenation of silicon tetrachloride with hydrogen in at least one of the optionally two or more reaction spaces of the reactor.

    摘要翻译: 本发明涉及通过在包括一个或多个反应空间的加压反应器的操作期间减少固体物质的Si基沉积物来生产含氢氯硅烷的方法,其中至少一种有机氯代硅烷与这些反应空间中的至少一种与氢气反应 至少一些时间的反应空间,其特征在于,在该反应发生的任选两个或更多个反应空间中的至少一个在至少一些时间内被供给另外的HCl。 另外的HCl优选通过在反应器的任选两个或更多个反应空间中的至少一个中用氢气氢化四氯化硅来产生。

    SUPERABSORBENT POLYMERS AND METHODS OF MAKING THE SAME
    56.
    发明申请
    SUPERABSORBENT POLYMERS AND METHODS OF MAKING THE SAME 有权
    超吸收聚合物及其制备方法

    公开(公告)号:US20120232233A1

    公开(公告)日:2012-09-13

    申请号:US13474981

    申请日:2012-05-18

    IPC分类号: C08F120/06

    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。

    AQUEOUS HYDROGEN PEROXIDE SOLUTIONS AND METHOD OF MAKING SAMEÜ
    59.
    发明申请
    AQUEOUS HYDROGEN PEROXIDE SOLUTIONS AND METHOD OF MAKING SAMEÜ 有权
    过氧化氢水溶液及其制备方法

    公开(公告)号:US20090294727A1

    公开(公告)日:2009-12-03

    申请号:US12541674

    申请日:2009-08-14

    IPC分类号: C01B15/01

    摘要: An aqueous hydrogen peroxide solution containing i) less than 50 wppm alkali metals, alkaline earth metals or combinations thereof in total, irrespective whether the alkali or alkaline earth metals are present in cationic or complex form; ii) less than 50 wppm of amines having a pkB of less than 4.5 or the corresponding protonated compounds in total; and iii) at least 100 wppm anions or compounds that can dissociate to form anions in total, where the wppm are based on the weight of hydrogen peroxide and the concentration of hydrogen peroxide is more than 50% by weight based on the total weight of the hydrogen peroxide solution. A process for preparation of said hydrogen peroxide solution and the use of said solution in a process for epoxidation of olefins is also disclosed.

    摘要翻译: 含有i)含有i)总计少于50wppm的碱金属,碱土金属或其组合的过氧化氢水溶液,不论碱金属或碱土金属是以阳离子或复合形式存在; ii)小于50wppm的pkB小于4.5的胺或相应的质子化合物总计; 和iii)至少100wppm的阴离子或化合物,其可以离解以形成阴离子,其中wppm基于过氧化氢的重量,并且过氧化氢的浓度基于总重量的50重量% 过氧化氢溶液。 还公开了制备所述过氧化氢溶液的方法和在烯烃环氧化方法中使用所述溶液。

    Process for the epoxidation of olefins
    60.
    发明授权
    Process for the epoxidation of olefins 有权
    烯烃环氧化方法

    公开(公告)号:US07169945B2

    公开(公告)日:2007-01-30

    申请号:US10724300

    申请日:2003-11-26

    IPC分类号: C07D301/12

    CPC分类号: C07D301/12 Y02P20/584

    摘要: A process for the catalytic epoxidation of olefins in the presence of a titanium containing zeolite catalyst and a polar solvent whereby the deactivation of the catalyst upon recycling of the solvent has been considerably reduced. In the process one or more nitrogen containing compounds are introduced at some stage, a solvent stream is recovered, treated to contain less than 50 wppm nitrogen in the form of organic nitrogen compounds and at least a part of it is recycled to the epoxidation step. Also disclosed is a process for the catalytic epoxidation of propene which integrates the treatment and recycle of the solvent into the workup of the reaction mixture.

    摘要翻译: 一种在含钛沸石催化剂和极性溶剂的存在下烯烃的催化环氧化方法,从而显着减少了在溶剂再循环时催化剂失活。 在该过程中,在一些阶段引入一种或多种含氮化合物,回收溶剂流,将其处理为含有少于50wppm氮的有机氮化合物形式,并将其至少一部分再循环至环氧化步骤。 还公开了丙烯的催化环氧化方法,其将溶剂的处理和再循环整合到反应混合物的后处理中。