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    • 5. 发明授权
    • Aqueous polymer dispersions
    • 聚合物水分散体
    • US06710112B1
    • 2004-03-23
    • US09702724
    • 2000-11-01
    • Mario SandorCheng-Le ZhaoHarald RöckelUwe Dittrich
    • Mario SandorCheng-Le ZhaoHarald RöckelUwe Dittrich
    • C08L5100
    • C08F2/38C08F2/22C08F212/08C08F265/06C08F2220/1825C08F220/14C08F220/34C08F220/06C08F220/18
    • An aqueous polymer dispersion having a minimum film-forming temperature of below +65° C. comprising at least one film-forming polymer in the form of dispersed polymer particles comprising a polymer phase P1 and a different polymer phase P2, the polymer dispersion being obtainable by free-radical aqueous emulsion polymerization comprising the following steps: i) polymerization of a first monomer charge M1 to give a polymer P1 having a theoretical glass transition temperature Tg(1) (according to Fox) and ii) polymerization of a second monomer charge M2 to give a polymer P2 having a theoretical glass transition temperature Tg(2) (according to Fox) which is different from Tg(1) in the aqueous dispersion of the polymer P1, at least one chain transfer reagent being used either in the polymerization of the monomer charge M1 or in the polymerization of the monomer charge M2; a process for preparing the aqueous polymer dispersion; and a pigmented and/or filled coating composition comprising as a binder the aqueous polymer dispersion.
    • 具有低于+ 65℃的最低成膜温度的含水聚合物分散体包含至少一种形成分散聚合物颗粒形式的成膜聚合物,该聚合物颗粒包含聚合物相P1和不同的聚合物相P2,可获得聚合物分散体 通过自由基水性乳液聚合,包括以下步骤:i)聚合第一单体电荷M1以得到具有理论玻璃化转变温度Tg <(1)>(根据Fox)的聚合物P1,和ii)第二次聚合 单体电荷M2,得到在聚合物P1的水性分散体中具有与Tg <(1)>不同的理论玻璃化转变温度Tg <(2)>(根据Fox)的聚合物P2,至少一种链转移试剂 用于单体电荷M1的聚合或单体电荷M2的聚合中; 制备聚合物水分散体的方法; 以及着色和/或填充的涂料组合物,其包含水性聚合物分散体作为粘合剂。