Method for producing halogenated acrylic acid derivative

    公开(公告)号:US10252971B2

    公开(公告)日:2019-04-09

    申请号:US15055903

    申请日:2016-02-29

    申请人: AGC Inc.

    摘要: To provide a novel method for producing a halogenated acrylic acid derivative.A compound represented by the formula (1): (wherein each of R1 and R2 which are independent of each other, is a hydrogen atom or a monovalent group essentially containing a carbon atom, or R1 and R2 together form a ring, R3 is a monovalent group capable of being desorbed by R3OH removal reaction, and each of R4 and R5 which are independent of each other, is a hydrogen atom or a monovalent group essentially containing a carbon atom) and having a boiling point of at most 500° C., is subjected to R3OH removal reaction in a vapor phase in the presence of a solid catalyst to obtain an ethene derivative represented by the formula (2): the ethene derivative represented by the formula (2) and a halogenated methane represented by the formula (3): CHXYZ  (3) (wherein each of X, Y and Z which are independent of one another, is a halogen atom) are reacted in the presence of a basic compound and a phase transfer catalyst, to obtain a cyclopropane derivative represented by the formula (4): and the cyclopropane derivative represented by the formula (4) is reacted by heating in a liquid phase or in a vapor phase to obtain a halogenated acrylic acid ester derivative represented by the formula (5):

    METHOD OF ISOLATING TARGET SUBSTANCE USING MEMBRANE AND APPARATUS THEREFOR
    6.
    发明申请
    METHOD OF ISOLATING TARGET SUBSTANCE USING MEMBRANE AND APPARATUS THEREFOR 有权
    使用膜分离目标物质的方法及其设备

    公开(公告)号:US20100101997A1

    公开(公告)日:2010-04-29

    申请号:US12531993

    申请日:2008-03-19

    申请人: Yasuhiro Tateishi

    发明人: Yasuhiro Tateishi

    摘要: A separation apparatus using a membrane for diafiltration, which provides precise fractionation of a target substance by monitoring and regulating permeability of the target substance based on measurement values and analytical values indicating separation status, such as physical values and concentration of a permeate liquid, a circulating liquid and an internal circulating liquid in a membrane device. A diafiltration process including adding a cleaning liquid to an treating liquid which contains multiple target substances and extracting a target substance into the permeate liquid supplied from a membrane separation apparatus to fractionate the target substance from other target substances remaining in a residual liquid. In the present invention, permeability of the target substance is controlled by regulating or controlling at least one operating parameter, such as a flow rate of the permeate liquid, operating pressure and temperature of the membrane separation apparatus, and concentration and amount of a circulating liquid, to a predetermined range based on a separation status index and/or a progress index of a separating operation.

    摘要翻译: 一种使用膜进行渗滤的分离装置,其通过基于测量值监测和调节目标物质的渗透性,提供目标物质的精确分级,以及表示分离状态的分析值,例如渗透液的物理值和浓度,循环 液体和膜装置中的内部循环液体。 1.一种渗滤方法,其特征在于,在含有多种目标物质的处理液中添加清洗液,将从所述膜分离装置供给的渗透液中提取目标物质,从残留液中残留的其他目标物质中分离出目标物质。 在本发明中,通过调节或控制渗透液的流量,膜分离装置的工作压力和温度,循环液的浓度和量的至少一个操作参数来控制目标物质的渗透性 ,基于分离状态指标和/或分离操作的进度指标达到预定范围。