Process for the continuous coagulation of vinyl polymer latices
    4.
    发明授权
    Process for the continuous coagulation of vinyl polymer latices 失效
    乙烯基聚合物胶乳的连续凝结方法

    公开(公告)号:US5314990A

    公开(公告)日:1994-05-24

    申请号:US692496

    申请日:1991-04-29

    IPC分类号: C08J3/16 C08F6/22 C08F6/16

    CPC分类号: C08F6/22

    摘要: A process for the continuous processing of vinyl polymer latices to produce thermoplastically processible vinyl polymer powder by coagulating a stream of a vinyl polymer latex by the addition of a stream of a coagulant with intensive mixing and shearing in a cascade of vessels at an average residence time per vessel of 10 to 60 minutes and at temperatures from 50 to 120.degree. C., volatile auxiliary substances and residual monomers in the polymer being optionally removed by steam distillation and part of the serum separated from the vinyl polymer being added to the stream of coagulant.

    摘要翻译: 一种连续处理乙烯基聚合物胶乳以通过凝结乙烯基聚合物胶乳物流的方式连续处理乙烯基聚合物胶乳的方法,该方法是通过在凝结剂流中加入混合物并在平均停留时间的梯级下进行剪切 每个容器10至60分钟,温度为50至120℃,通过蒸汽蒸馏任选除去聚合物中的挥发性辅助物质和残留单体,并将部分从乙烯基聚合物中分离的血清加入到凝结剂流中 。

    Process for the preparation of aromatic polyethersulphones
    7.
    发明授权
    Process for the preparation of aromatic polyethersulphones 失效
    制备芳香族聚醚砜的方法

    公开(公告)号:US5047496A

    公开(公告)日:1991-09-10

    申请号:US365304

    申请日:1989-06-13

    IPC分类号: C08G75/00 C08G75/23

    CPC分类号: C08G75/23

    摘要: This invention relates to a process for the preparation of high molecular weight aromatic polyethersulphones from diphenols and dihalogenoaryls, characterized in that N-alkylated acid amides are used as solvents and at the same time for the azeotropic removal of the water of reaction.

    摘要翻译: 本发明涉及从二酚和二卤代芳基制备高分子量芳族聚醚砜的方法,其特征在于N-烷基化酰胺作为溶剂,同时用于共沸除去反应水。