中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

22 records (took 0.029 seconds)

    Method for manufacturing polyvinyl pyrrolidone by spray polymerization
    1.
    发明专利
    Method for manufacturing polyvinyl pyrrolidone by spray polymerization 审中-公开
    通过喷雾聚合制备聚乙烯吡咯烷酮的方法

    公开(公告)号：JP2009120838A

    公开(公告)日：2009-06-04

    申请号：JP2008291949

    申请日：2008-11-14

    Applicant: Basf Se ,  ビーエーエスエフ ソシエタス・ヨーロピアBasf Se

    Inventor： LOSCH DENNIS ,  WIDMAIER RALF ,  SEIDL VOLKER ,  MORITZ HANS-ULRICH ,  ASIF KARIM ,  BIEDASEK SILKE

    IPC: C08F2/46 ,  C08F2/04 ,  C08F26/10

    CPC classification number: C08F2/00 ,  C08F26/10

    Abstract: PROBLEM TO BE SOLVED: To provide an improved method for manufacturing a polyvinyl pyrrolidone.
    SOLUTION: In the method for manufacturing the polyvinyl pyrrolidone by a polymerization initiated by a free radical in the presence of an initiator, the polymerization is carried out by spray polymerization or droplet polymerization. The initiator to be used is an organic or inorganic peroxide, a hydroperoxide, a persulfate, an azo compound, a photo-initiator or a redox initiator. The polymerization is carried out in a water solution at a polymerization temperature of 70-250°C by forming and spraying droplets in an inert gas flow or forming droplets and carrying out the polymerization in a spray tower.
    COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种制造聚乙烯吡咯烷酮的改进方法。 解决方案：在通过在引发剂的存在下由自由基引发的聚合制造聚乙烯吡咯烷酮的方法中，聚合通过喷雾聚合或液滴聚合进行。 要使用的引发剂是有机或无机过氧化物，氢过氧化物，过硫酸盐，偶氮化合物，光引发剂或氧化还原引发剂。 通过在惰性气流中形成和喷雾液滴或形成液滴并在喷雾塔中进行聚合，聚合反应在聚合温度为70-250℃的水溶液中进行。 版权所有（C）2009，JPO＆INPIT

    Methods for producing water-soluble non-turbid copolymers of at least one water-soluble n-vinyllactam and at least one hydrophobic comonomer
    3.
    发明专利
    Methods for producing water-soluble non-turbid copolymers of at least one water-soluble n-vinyllactam and at least one hydrophobic comonomer 有权
    用于生产至少一种水溶性N-乙烯基甲酰胺和至少一种疏水性聚合物的水溶性非涡旋共聚物的方法

    公开(公告)号：JP2008138200A

    公开(公告)日：2008-06-19

    申请号：JP2007307529

    申请日：2007-11-28

    Applicant: Basf Se ,  ビーエーエスエフ ソシエタス・ヨーロピアBasf Se

    Inventor： DOBRAWA RAINER ,  WIDMAIER RALF ,  KLAUS SCHNELL ,  STRUBE KARL-HERMANN ,  NIEBERLE JUERGEN ,  DIEING REINHOLD DR ,  POTZOLLI BERND DE ,  ANDREAS GRUBER ,  ULRICH FILGES ,  MEISTER MARTIN DR ,  NEUTZNER JOSEF ,  BOUQUET WOLFGANG ,  SCHUPP EBERHARD

    IPC: C08F226/06

    CPC classification number: C08F2/06

    Abstract: PROBLEM TO BE SOLVED: To provide methods for producing vinyllactam copolymers, which comprise causing radical polymerization of water-soluble N-vinyllactam and hydrophobic comonomers in an organic solvent in the presence of an initiator. SOLUTION: The following process measures are combined appropriately and comprise (i) performing polymerization under reflux, (ii) adding at least 5 mol% of N-vinyllactam to the polymerization mixture if at least 70 mol% of the total amount of hydrophobic monomer used have completely reacted, (iii) returning the condensate formed in the reflux from below to the polymerization mixture, (iv) introducing the initiator in the form of a solution in an organic solvent from below into the polymerization mixture, (v) adding N-vinyllactam to the reflux, (vi) distilling off a portion of the solvent and continuing polymerization following conversion of 70 to 99% by weight of the N-vinyllactam used, (vii) introducing at least one monomer from below into the polymerization mixture, and (viii) performing polymerization under pressure so as to avoid vaporization of the component. COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 要解决的问题：提供制备乙烯基内酰胺共聚物的方法，其包括在引发剂存在下在有机溶剂中引发水溶性N-乙烯基内酰胺和疏水性共聚单体的自由基聚合。 解决方案：以下过程措施适当组合，包括（i）在回流下进行聚合反应，（ii）将至少5mol％的N-乙烯基内酰胺加入到聚合混合物中，如果其总量的至少70mol％ 使用的疏水性单体完全反应，（iii）将回流中形成的缩合物从下面返回到聚合混合物中，（iv）将引发剂以有机溶剂形式从有机溶剂中引入聚合混合物，（v） 将N-乙烯基内酰胺加入到回流中，（vi）蒸馏除去一部分溶剂，并在所用的N-乙烯基内酰胺的70至99重量％的转化后继续聚合，（vii）从下面将至少一种单体引入聚合 混合物，和（viii）在压力下进行聚合，以避免组分蒸发。 版权所有（C）2008，JPO＆INPIT

Patent Agency Ranking