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    • 9. 发明授权
    • Method for forming polymers
    • 形成聚合物的方法
    • US5521266A
    • 1996-05-28
    • US330660
    • 1994-10-28
    • Willie Lau
    • Willie Lau
    • C08F2/44C08B37/16C08F2/00C08F2/10C08F2/16C08F2/22C08F2/24C08F2/38C08F291/00C08L33/00
    • C08F2/10C08F2/22C08F2/24C08F2/38C08F291/00
    • An aqueous polymerization method is disclosed for forming polymers containing, as polymerized units, at least one monomer having low water solubility, including the steps of:(1) complexing at least one monomer having low water solubility with a macromolecular organic compound having a hydrophobic cavity; and(2) polymerizing in an aqueous system from about 0.1% to about 100%, by weight of the monomer component, based on the total weight of the polymer, of the complexed monomer having low water solubility with from about 0% to about 99.9% by weight, based on the total weight of the polymer, of at least one monomer having high water solubility.The method is also useful for forming aqueous solution polymers having low water solubility. The method is useful for polymerizing, in an aqueous system, aqueous solution polymers or emulsion polymers, particularly random copolymers, of monomer having a low water solubility which heretofore could not be made satisfactorily without the addition of an organic solvent, comonomer or a high level of surfactant to aid in solubilizing the monomer having low water solubility. The method is also useful for improving the efficiency of chain transfer agents having low water solubility used in aqueous solution and emulsion polymerizations.
    • 公开了一种水性聚合方法,其用于形成含有至少一种具有低水溶性的单体的聚合单元的聚合方法,包括以下步骤:(1)将具有低水溶性的至少一种单体与具有疏水空腔的高分子有机化合物络合 ; 和(2)在水性体系中以基于聚合物的总重量计约0.1%至约100%的单体组分,具有低水溶性的络合单体约0%至约99.9% 基于聚合物的总重量计,至少一种具有高水溶性的单体。 该方法对于形成具有低水溶性的水溶液聚合物也是有用的。 该方法可用于在水性体系中聚合具有低水溶性的单体的水溶液聚合物或乳液聚合物,特别是无规共聚物,其迄今为止不能令人满意地没有添加有机溶剂,共聚单体或高水平 的表面活性剂以帮助溶解具有低水溶性的单体。 该方法也可用于提高在水溶液和乳液聚合中使用的具有低水溶性的链转移剂的效率。