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    • 3. 发明授权
    • Method for isolating polymers from solutions
    • 从溶液中分离聚合物的方法
    • US06506281B1
    • 2003-01-14
    • US09719891
    • 2001-03-02
    • Clemens CasperJörgen WeinschenckKlemens KohlgrüberJürgen HeuserChristian KordsThomas Elsner
    • Clemens CasperJörgen WeinschenckKlemens KohlgrüberJürgen HeuserChristian KordsThomas Elsner
    • B01D122
    • B01D3/06C08G64/406Y10S159/08Y10S159/10
    • A process of evaporating a viscous polymer solution is described. The process includes: (a) providing a viscous polymer solution including at least 30 wt. % of solvents and monomers; (b) introducing the viscous polymer solution into a heated helix (5), the heated helix having a vapor exit velocity of 200 to 300 m/s, (a film flow including a two-phase mixture of polymer melt, and solvent vapors and monomer vapors being formed within the helix); (c) forwarding the film flow from helix (5) into a heated vapor separator (6); (d) expanding the two-phase mixture of polymer melt, and solvent vapors and monomer vapors of the film flow within vapor separator (6) at an absolute pressure of 10 mbar to 800 mbar, (a bottom product including a concentrated melt of the polymer is formed within the vapor separator); and (e) withdrawing the bottom product from vapor separator (6). Each of the helix (5) and vapor separator (6) have a separate heating device, and each of heating device independently provides a temperature that is above the softening point of the polymer.
    • 描述蒸发粘性聚合物溶液的方法。 该方法包括:(a)提供粘性聚合物溶液,其包含至少30wt。 %的溶剂和单体; (b)将粘性聚合物溶液引入加热的螺旋(5)中,加热的螺旋具有200-300m / s的蒸气出口速度(包括聚合物熔体和溶剂蒸气的两相混合物的膜流和 单体蒸气在螺旋内形成); (c)将膜流从螺旋(5)转移到加热的蒸气分离器(6)中; (d)在10毫巴至800毫巴的绝对压力下,将蒸气分离器(6)内的聚合物熔体和溶剂蒸气和单体蒸气的溶剂蒸气和单体蒸气膨胀(包括含有 聚合物形成在蒸气分离器内); 和(e)从蒸气分离器(6)中取出底部产物。 螺旋(5)和蒸汽分离器(6)中的每一个具有单独的加热装置,并且每个加热装置独立地提供高于聚合物软化点的温度。
    • 5. 发明授权
    • Process for separating volatile components from polymers
    • 挥发性组分与聚合物分离的方法
    • US07144981B2
    • 2006-12-05
    • US10684600
    • 2003-10-14
    • Thomas KönigKlemens KohlgrüberUlrich LiesenfelderMichael BierdelHelmut MeyerRichard WeiderJörg Krüger
    • Thomas KönigKlemens KohlgrüberUlrich LiesenfelderMichael BierdelHelmut MeyerRichard WeiderJörg Krüger
    • C08F6/00
    • C08F6/003
    • A process for concentrating polymers by evaporation is disclosed. The process entails (i) obtaining a mixture containing a polymer and volatile component, the volatile components being present in the mixture at an amount less than 20 wt. % relative to the weight of the mixture, and (ii) introducing the mixture in a downward direction under pressure through a plurality of nozzles arranged vertically and next to one another into a degassing container to form an extrudate. The volatile component contains at least one of residual monomers, oligomers and solvents, and the throughput of the mixture per nozzle is 0.3 to 2 kg/h. The vapor pressure of the volatile component of the extrudate is more than 2.5 bar, and the absolute pressure in the degassing container is 50 to 5000 Pa. The polymer prepared by the process is characterized in that it contains volatile components in an amount of less than 300 ppm.
    • 公开了通过蒸发浓缩聚合物的方法。 该方法需要(i)获得含有聚合物和挥发性组分的混合物,所述挥发性组分以小于20重量%的量存在于混合物中。 相对于混合物重量的%,和(ii)通过垂直且彼此相邻布置的多个喷嘴在压力下向下引入混合物到脱气容器中以形成挤出物。 挥发性组分含有残留单体,低聚物和溶剂中的至少一种,并且每个喷嘴的混合物的生产量为0.3至2kg / h。 挤出物的挥发性成分的蒸气压大于2.5巴,脱气容器中的绝对压力为50〜5000Pa。本方法制备的聚合物的特征在于,其含有挥发性成分的量小于 300 ppm。