Process for preparing aqueous, protective colloid stabilized vinyl ester homopolymer and copolymer dispersions
    2.
    发明授权
    Process for preparing aqueous, protective colloid stabilized vinyl ester homopolymer and copolymer dispersions 失效
    制备水性,保护胶体稳定的乙烯基酯均聚物和共聚物分散体的方法

    公开(公告)号:US06489391B1

    公开(公告)日:2002-12-03

    申请号:US09509285

    申请日:2000-05-22

    IPC分类号: C08L2904

    摘要: The invention provides a method of producing aqueous, protective colloid stabilized vinyl ester homo- and co-polymer dispersions with a defined solids content by emulsion polymerization in the presence of a protective colloid. The method specifies that a dispersion with a solids content lower than the defined solids content is produced and then thickened to the defined solids content after the polymerization has been completed. The dispersion is thickened by adding a polymer powder which is of the same polymer composition as the emulsion polymerizate and which can be redispersed in water.

    摘要翻译: 本发明提供了一种通过在保护胶体存在下通过乳液聚合制备具有确定的固体含量的水性,保护胶体稳定的乙烯基酯均聚物和共聚物分散体的方法。 该方法规定了固体含量低于定义的固体含量的分散体,然后在聚合完成之后增稠至所定义的固体含量。 通过加入与乳液聚合物具有相同聚合物组成并可再分散在水中的聚合物粉末来增稠分散体。