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    • 4. 发明申请
    • Aqueous multistage emulsion polymer composition
    • 水性多级乳液聚合物组合物
    • US20050027079A1
    • 2005-02-03
    • US10887261
    • 2004-07-08
    • Rosemarie Palmer LauerJennifer Petoff
    • Rosemarie Palmer LauerJennifer Petoff
    • C08F2/22C08F4/32C08F20/12C08F265/06C09D133/06C08F4/00
    • C08F20/12C08F2/22C08F265/06C09D133/06
    • An aqueous multistage emulsion polymer formed by the free radical polymerization in at least two stages of, in each stage, at least one ethylenically unsaturated nonionic acrylic monomer, the polymer in two of the stages having glass transition temperatures (Tg) differing by at least 10 ° C.; the polymerization, in at least one stage, being effected in the presence of 0.01-1.0%%, by weight based on the dry weight of the stage polymer, t-alkyl hydroperoxide, t-alkyl peroxide, or t-alkyl perester wherein the t-alkyl group includes at least 5 Carbon atoms, preferably t-amyl hydroperoxide, is provided. Also provided is a method for preparing the aqueous multistage emulsion polymer, an aqueous coating composition including the aqueous multistage emulsion polymer and a method for treating a substrate with the aqueous coating composition.
    • 通过自由基聚合形成的水性多级乳液聚合物,其在至少两个阶段中,在每个阶段中至少一种烯属不饱和非离子丙烯酸单体,所述两个阶段中的聚合物的玻璃化转变温度(Tg)至少为10 C。; 在至少一个阶段中的聚合在基于载体聚合物,叔烷基氢过氧化物,叔烷基过氧化物或叔烷基过酸酯的干重的0.01-1.0 %%的存在下进行,其中 t-烷基包括至少5个碳原子,优选叔戊基过氧化氢。 还提供了一种制备含水多阶段乳液聚合物的方法,包括含水多层乳液聚合物的水性涂料组合物和用水性涂料组合物处理基材的方法。