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    • 1. 发明授权
    • Method and system for purifying monomers
    • 单体纯化方法和系统
    • US09221738B2
    • 2015-12-29
    • US13256469
    • 2010-03-26
    • Dirk BroellChristian MaulBenedikt LauxVolker Schleep
    • Dirk BroellChristian MaulBenedikt LauxVolker Schleep
    • C07C67/54C07C51/573B01D3/12B01D3/42
    • C07C51/573B01D3/12B01D3/42C07C67/54C07C57/04C07C69/54
    • 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.
    • 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。
    • 8. 发明授权
    • Method for the continuous production of unsaturated carboxylic acid anhydrides
    • 连续生产不饱和羧酸酐的方法
    • US08084640B2
    • 2011-12-27
    • US12299217
    • 2007-03-14
    • Dirk BroellHermann Siegert
    • Dirk BroellHermann Siegert
    • C07C65/00
    • C07C51/56C07C51/567Y02P20/582C07C57/04
    • 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reactants are fed into a reaction region in stoichiometric ratios, h) the carboxylic acid formed as the by-product is withdrawn at the top of the column, i) the unconverted reactants are recycled into the reaction region and j) the product of the formula I is obtained via a side draw,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.
    • 用于连续制备通式IR-C(O)-O-C(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,通过脂族羧酸酐的反式氢化 与具有上,中,下区域的精馏塔中的R如上定义的通式II R-COOH(II)的羧酸反应,其特征在于f)惰性沸腾油最初装入底部 ,g)将反应物以化学计量比进料到反应区域中,h)作为副产物形成的羧酸在塔的顶部排出,i)将未转化的反应物再循环到反应区域中, j)式I的产物通过侧拉取得,优选在中间和下部区域之间。
    • 9. 发明申请
    • IMPROVED METHOD FOR THE PRODUCTION OF UNSATURATED CARBOXYLIC ACID ANHYDRIDES
    • 改进的不饱和羧酸酐的制备方法
    • US20100069666A1
    • 2010-03-18
    • US12517563
    • 2007-09-03
    • Dirk Broell
    • Dirk Broell
    • C07C51/083
    • C07C51/083C07C51/56C07C51/573Y02P20/582C07C53/08C07C57/04
    • The invention provides an improved process for 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 transanhydridizing an aliphatic carboxylic anhydride with a carboxylic acid of the general formula II R—COOH  (II) in which R is as defined above, in an apparatus consisting of a reaction region and a rectification column, characterized in that a) the reactants are fed into a reaction region in stoichiometric ratios, b) the carboxylic acid formed as a by-product is removed from the reaction mixture, c) the carboxylic anhydride of the formula I is subsequently drawn off, d) the unconverted reactants are recycled into the reaction region, e) the reaction region comprises a heterogeneous catalyst and f) one or more polymerization inhibitors are added.
    • 本发明提供了制备通式IR-C(O)-O-C(O)-R(I)的不饱和羧酸酐的改进方法,其中R是具有2至12个碳原子的不饱和有机基团, 脂肪族羧酸酐与通式II的羧酸R-COOH(II)反应,其中R如上定义,在由反应区和精馏塔组成的装置中,其特征在于a)将反应物加入到 反应区域的化学计量比,b)从反应混合物中除去作为副产物形成的羧酸,c)随后将式I的羧酸酐除去,d)将未转化的反应物再循环到反应区域中, e)反应区域包含非均相催化剂,和f)加入一种或多种聚合抑制剂。