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    • 69. 发明授权
    • Air curing water base copolymers and method of preparation
    • 空气固化水基共聚物及其制备方法
    • US06177510B1
    • 2001-01-23
    • US09290055
    • 1999-04-12
    • John C. Saam
    • John C. Saam
    • C08J300
    • C08K5/103C08F2/22C08F220/62C08K5/10C09D133/062C08L33/06C08L2666/34
    • An aqueous dispersion comprising a copolymer which is the polymerization product of a mixture of vinylic monomers wherein from about 5% to about 90% by weight of the vinylic monomers are selected from co-esters of a drying oil acid and an unsaturated &agr;, &bgr;-polymerizable unsaturated carboxylic acid, contains from about 0.5% to about 50% by weight based on the weight of the copolymer of a hydrophobic ester or partial ester of a drying oil acid and a polyol. The copolymer polymerized in the presence of the hydrophobic ester or partial ester is characterized by a relatively low gel content, and by a relatively broad, multi-nodal, molecular weight distribution, including a low molecular weight component which acts as a transient plasticizer and coalescing agent. The aqueous dispersions can be formulated into quick drying coating compositions which form smooth protective films on various substrates, without requiring volatile coalescing agents.
    • 包含共聚物的水分散体,其是乙烯基单体的混合物的聚合产物,其中约5重量%至约90重量%的乙烯基单体选自干性油酸和不饱和的α,β- 基于干性油酸和多元醇的疏水酯或偏酯的共聚物的重量,含有约0.5%至约50%重​​量的可聚合不饱和羧酸。 在疏水酯或偏酯的存在下聚合的共聚物的特征在于相对低的凝胶含量,并且具有相对宽的多节分子量分布,包括作为瞬时增塑剂和聚结的低分子量组分 代理商 水性分散体可以配制成快干涂料组合物,其在各种底物上形成平滑的保护膜,而不需要挥发性聚结剂。