Polycarbonate isolation through homogenization devolatization
    1.
    发明授权
    Polycarbonate isolation through homogenization devolatization 失效
    聚碳酸酯分离通过均质脱挥发

    公开(公告)号:US06214892B1

    公开(公告)日:2001-04-10

    申请号:US09470735

    申请日:1999-12-23

    IPC分类号: C08J1104

    CPC分类号: C08G63/89 C08G64/403

    摘要: This invention relates to a method of recovering a polymer from an organic mixture comprising polymer and an organic solvent, the method comprising: a) admixing an aqueous solution and the organic mixture by the application of a combined mechanical and hydraulic shear force, the combined mechanical and shear force being sufficient to form a liquid-liquid dispersion; b) removing the organic solvent from the liquid-liquid dispersion thereby forming a remaining solution; and c) separating the polymer from the remaining solution. In one embodiment the polymer is a polycarbonate prepared by the interfacial method, and the organic solvent is methylene chloride.

    摘要翻译: 本发明涉及从包含聚合物和有机溶剂的有机混合物中回收聚合物的方法,该方法包括:a)通过应用组合的机械和液压剪切力混合水溶液和有机混合物,组合机械 剪切力足以形成液 - 液分散体; b)从液 - 液分散液中除去有机溶剂,从而形成剩余溶液; 和c)将聚合物与剩余溶液分离。在一个实施方案中,聚合物是通过界面方法制备的聚碳酸酯,有机溶剂是二氯甲烷。

    PROCESS FOR PRODUCING BIS-(AMINOALKYL)-POLYSILOXANES
    5.
    发明申请
    PROCESS FOR PRODUCING BIS-(AMINOALKYL)-POLYSILOXANES 审中-公开
    生产双(氨基烷基) - 聚硅氧烷的方法

    公开(公告)号:US20080234441A1

    公开(公告)日:2008-09-25

    申请号:US11750361

    申请日:2007-05-18

    IPC分类号: C08F285/00

    摘要: Bis(aminoalkyl)siloxane dimers or oligomers are prepared by a process utilizing hydrosilation of an olefinic amine with tetraorganodisiloxane or with bis(dialkylhydrogen)siloxane oligomers to generate high purity bis(aminoalkyl)disiloxane or bis(aminoalkyl)siloxane oligomers at high conversion yield, which may then be subsequently equilibrated to higher molecular weight bis(aminoalkyl)polysiloxanes.

    摘要翻译: 双(氨基烷基)硅氧烷二聚体或低聚物通过利用烯烃与四有机二硅氧烷或双(二烷基氢)硅氧烷低聚物的氢化硅烷化的方法制备,以产生高转化率的高纯度双(氨基烷基)二硅氧烷或双(氨烷基)硅氧烷低聚物, 然后将其随后平衡到较高分子量的双(氨基烷基)聚硅氧烷。