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    • 1. 发明申请
    • PROCESS FOR PREPARING AQUEOUS COPOLYMER DISPERSIONS
    • 制备水性共聚物分散体的方法
    • WO2010051346A1
    • 2010-05-06
    • PCT/US2009/062497
    • 2009-10-29
    • E. I. DU PONT DE NEMOURS AND COMPANYHENDRICKX, GeorgeHUYBRECHTS, Jozef, TheresiaENGELS, Christiaan
    • HENDRICKX, GeorgeHUYBRECHTS, Jozef, TheresiaENGELS, Christiaan
    • C08F242/00
    • C08F290/00C08F8/44C08F220/68C08F222/1006C08F263/00C08F265/04C08F283/00C08F289/00C08F290/06C08F291/00C08L51/003C08L51/08C09D133/066C08F212/08C08L2666/02C08F220/06C08F2220/281
    • The invention relates to a process for preparing a cross-linkable aqueous copolymer dispersion of a water-dilutable copolymer A for a coating composition, comprising the steps: 1. polymerizing by radical copolymerization a) 5 to 64 % by weight, preferably 10 to 50 % by weight, most preferred 15 to 40 % by weight of a reaction product of at least one fatty acid having at least one ethylenic double bond and one hydroxyl group in the molecule with a polyalcohol having a hydroxyl functionality of 2 to 8 and a. 36 to 95 % by weight, preferably 50 to 90 % by weight, most preferred 60 to 85 % by weight of at least one additional unsaturated monomer b), wherein the at least one additional unsaturated monomer b) contains hydrophilic ionic groups and wherein the % by weight of monomers a) and b) are adding up to 100%, 2. neutralizing the hydrophilic ionic groups of the copolymer A before and/or during dispersing or dissolving the copolymer A in an aqueous carrier, 3. dispersing or dissolving the neutralized copolymer A in an aqueous carrier, wherein the at least one additional unsaturated monomer b) is polymerized in presence of at least 20 % by weight of the total amount of reaction product a), thereby forming a copolymer A) having an acid number of at least 10 mg KOH/g solids.
    • 本发明涉及一种制备用于涂料组合物的水可稀释共聚物A的可交联水性共聚物分散体的方法,包括以下步骤:1.通过自由基共聚进行聚合a)5至64重量%,优选10至50 重量百分比,最优选15至40重量%的至少一种在分子中具有至少一个烯属双键和一个羟基的脂肪酸与羟基官能度为2至8的多元醇的反应产物和a。 36至95重量%,优选50至90重量%,最优选60至85重量%的至少一种另外的不饱和单体b),其中所述至少一种另外的不饱和单体b)含有亲水性离子基团,并且其中 单体重量百分比a)和b)在共聚物A分散或溶解在水性载体中之前和/或期间中和共聚物A的亲水离子基团,加入到100%,3.分散或溶解 在水性载体中的中和共聚物A,其中至少一种另外的不饱和单体b)在反应产物a)的总量的至少20重量%的存在下聚合,由此形成具有酸值的共聚物A) 至少10mg KOH / g固体。