利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

17 条记录 (耗时 0.014 秒)

    Method and system for purifying monomers
    1.
    发明授权
    Method and system for purifying monomers 有权
    单体纯化方法和系统

    公开(公告)号：US09221738B2

    公开(公告)日：2015-12-29

    申请号：US13256469

    申请日：2010-03-26

    申请人： Dirk Broell ,  Christian Maul ,  Benedikt Laux ,  Volker Schleep

    发明人： Dirk Broell ,  Christian Maul ,  Benedikt Laux ,  Volker Schleep

    IPC分类号： C07C67/54 ,  C07C51/573 ,  B01D3/12 ,  B01D3/42

    CPC分类号： C07C51/573 ,  B01D3/12 ,  B01D3/42 ,  C07C67/54 ,  C07C57/04 ,  C07C69/54

    摘要： The present invention relates to a process for purifying monomers, by evaporating at least a portion of the monomers present in a starting composition and then condensing it, which is characterized in that at least a portion of the starting composition is evaporated in a short-path evaporator, the mass flow density of the vapors {dot over (m)} being selected according to the relation (I) m . ≤ 1800 ⁢ kg · K mbar · m 2 · h · kg kmol · p i · ( M ~ T ) 0.5 ( I ) in which {tilde over (M)} is the average molar mass of the vapors in the short-path evaporator in kg/kmol T is the temperature of the vapors in K pi is the pressure in the short-path evaporator in mbar {dot over (m)} is the mass flow density of the vapors in kg/(m2·h). A further aspect of the present invention is a plant for performing the process.

    摘要翻译： 本发明涉及通过蒸发存在于起始组合物中的至少一部分单体然后使其冷凝来纯化单体的方法，其特征在于起始组合物的至少一部分在短路径中蒸发 蒸发器，根据关系式（I）m选择蒸气的质量流量密度（点（m）}）。 ≤M1·m························································· 以kg / kmol为单位T是蒸气的温度，K pi是短路蒸发器中的压力，单位为mbar（点）（m）}是蒸汽的质量流密度，单位为kg /（m2·h）。 本发明的另一方面是用于执行该方法的设备。

    METHOD FOR THE CONTINUOUS PRODUCTION OF UNSATURATED CARBOXYLIC ACID ANHYDRIDES
    4.
    发明申请
    METHOD FOR THE CONTINUOUS PRODUCTION OF UNSATURATED CARBOXYLIC ACID ANHYDRIDES 有权
    连续生产不饱和羧酸酐的方法

    公开(公告)号：US20090264673A1

    公开(公告)日：2009-10-22

    申请号：US12299217

    申请日：2007-03-14

    申请人： Dirk Broell ,  Hermann Siegert

    发明人： Dirk Broell ,  Hermann Siegert

    IPC分类号： C07C67/04

    CPC分类号： C07C51/56 ,  C07C51/567 ,  Y02P20/582 ,  C07C57/04

    摘要： Process for continuously preparing unsaturated carboxylic anhydrides of the general formula I R—C(O)—O—C(O)—R  (I) in which R is an unsaturated organic radical having 2 to 12 carbon atoms by transanhydridization of an aliphatic carboxylic anhydride with a carboxylic acid of the general formula II R—COOH  (II) in which R is as defined above in a rectification column having an upper, middle and lower region, characterized in that f) an inert boiling oil is initially charged in the bottom of the column, g) the reactants are fed into a reaction region in stoichiometric ratios, h) the carboxylic acid formed as the by-product is withdrawn at the top of the column, i) the unconverted reactants are recycled into the reaction region and j) the product of the formula I is obtained via a side draw, preferably between the middle and lower column region.

    摘要翻译： 通过脂肪族羧酸酐与羧基的反式脱水连续制备通式I RC（O）-OC（O）-R（I）的不饱和羧酸酐的方法，其中R是具有2至12个碳原子的不饱和有机基团 通式II的R-COOH（II）的酸，其中R如上所定义，在具有上部，中部和下部区域的精馏塔中，其特征在于f）惰性沸腾油最初装入塔底 g）将反应物以化学计量比进料到反应区域中，h）在柱顶部取出副产物形成的羧酸，i）将未转化的反应物再循环到反应区域，并且j） 式I的产物经由侧拉取得，优选在中间和下部区域之间获得。