Process for the manufacture of epoxy-monomers and epoxides
    6.
    发明授权
    Process for the manufacture of epoxy-monomers and epoxides 有权
    制备环氧单体和环氧化物的方法

    公开(公告)号:US09573917B2

    公开(公告)日:2017-02-21

    申请号:US14897241

    申请日:2014-06-09

    摘要: A process for manufacturing epoxy monomers and/or epoxides in high yields and useful quality and chemical stability by dehydrochlorination of the corresponding chlorohydrins with an alkaline agent, producing the corresponding side product dry salt in a high purity, characterized in that the process comprises the following steps: a. Reaction of the chlorohydrins with the alkaline agent to form corresponding epoxides and the corresponding precipitated chloride salt; b. Dehydration, and optionally completing the reaction, of the reaction mixture of step (a), by use of an azeotropic agent, added to step (b) or generated in situ in step (a), resulting in the producing of a dehydrated reaction mixture; c. Separating the resulting chloride salt by filtration from the dehydrated reaction mixture (b) and d. Isolating the epoxide from the filtered liquid fraction.

    摘要翻译: 一种以高产率制备环氧单体和/或环氧化物的方法,并且通过用碱性试剂对相应的氯代醇进行脱氯化氢来产生有用的质量和化学稳定性,产生高纯度的相应的副产物干盐,其特征在于该方法包括以下 步骤:a。 氯醇与碱性试剂的反应形成相应的环氧化物和相应的沉淀氯化物盐; b。 通过使用加入到步骤(b)中的共沸剂或在步骤(a)中原位产生的步骤(a)的反应混合物的脱水和任选地完成反应),导致产生脱水的反应混合物 ; C。 通过过滤从脱水反应混合物(b)和d分离得到的氯化物盐。 从过滤的液体馏分中分离出环氧化物。

    Composition comprising 1,1,1,3-tetrachloropropane and a process for producing the composition thereof

    公开(公告)号:US10934232B2

    公开(公告)日:2021-03-02

    申请号:US16375187

    申请日:2019-04-04

    摘要: Disclosed is a process for producing a chlorinated C3-6 alkane comprising providing a reaction mixture comprising an alkene and carbon tetrachloride in a principal alkylation zone to produce chlorinated C3-6 alkane in the reaction mixture, and extracting a portion of the reaction mixture from the principal alkylation zone, wherein: a) the concentration of the chlorinated C3-6 alkane in the reaction mixture in the principal alkylation zone is maintained at a level such that the molar ratio of chlorinated C3-6 alkane:carbon tetrachloride in the reaction mixture extracted from the alkylation zone does not exceed 95:5 when the principal alkylation zone is in continuous operation; and/or b) the reaction mixture extracted from the principal alkylation zone additionally comprises alkene and the reaction mixture is subjected to a dealkenation step in which at least about 50% or more by weight of the alkene present in the reaction mixture is extracted therefrom and at least about 50% of the extracted alkene is fed back into the reaction mixture provided in the principal alkylation zone; and/or c) the reaction mixture present in the principal alkylation zone and extracted from the principal alkylation zone additionally comprises a catalyst, and the reaction mixture extracted from the principal alkylation zone is subjected to an aqueous treatment step in which the reaction mixture is contacted with an aqueous medium in an aqueous treatment zone, a biphasic mixture is formed and an organic phase comprising catalyst is extracted from the biphasic mixture.

    Process for producing a chlorinated alkane

    公开(公告)号:US10793496B2

    公开(公告)日:2020-10-06

    申请号:US16092451

    申请日:2017-04-12

    摘要: A process for producing a chlorinated alkane in which an alkene or an alkane feedstock is contacted with chlorine in a chlorination zone to produce a reaction mixture containing the chlorinated alkane, wherein the chlorine supplied into the chlorination zone has an oxygen content of less than about 2000 ppmv and wherein: the chlorination zone is closed to the atmosphere, and/or the chlorination zone is operated under atmospheric or superatmospheric pressure, and/or the chlorination zone is operated under an inert atmosphere, and/or the content of dissolved oxygen in the alkene or alkane feedstock is less than 2000 ppm.

    Process for producing a chlorinated C3-6 alkane

    公开(公告)号:US10294179B2

    公开(公告)日:2019-05-21

    申请号:US15858234

    申请日:2017-12-29

    摘要: Disclosed is a process for producing a chlorinated C3-6 alkane comprising providing a reaction mixture comprising an alkene and carbon tetrachloride in a principal alkylation zone to produce chlorinated C3-6 alkane in the reaction mixture, and extracting a portion of the reaction mixture from the principal alkylation zone, wherein: a) the concentration of the chlorinated C3-6 alkane in the reaction mixture in the principal alkylation zone is maintained at a level such that the molar ratio of chlorinated C3-6 alkane:carbon tetrachloride in the reaction mixture extracted from the alkylation zone does not exceed 95:5 when the principal alkylation zone is in continuous operation; and/or b) the reaction mixture extracted from the principal alkylation zone additionally comprises alkene and the reaction mixture is subjected to a dealkenation step in which at least about 50% or more by weight of the alkene present in the reaction mixture is extracted therefrom and at least about 50% of the extracted alkene is fed back into the reaction mixture provided in the principal alkylation zone; and/or c) the reaction mixture present in the principal alkylation zone and extracted from the principal alkylation zone additionally comprises a catalyst, and the reaction mixture extracted from the principal alkylation zone is subjected to an aqueous treatment step in which the reaction mixture is contacted with an aqueous medium in an aqueous treatment zone, a biphasic mixture is formed and an organic phase comprising catalyst is extracted from the biphasic mixture.