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    • 4. 发明授权
    • Aqueous n-butyl acrylate copolymer dispersions for use as laminating adhesives
    • 丙烯酸正丁酯共聚物水分散体用作层压粘合剂
    • US06727327B1
    • 2004-04-27
    • US09926082
    • 2001-08-27
    • Matthias GerstAlexander CentnerKarl-Heinz Schumacher
    • Matthias GerstAlexander CentnerKarl-Heinz Schumacher
    • C08F238
    • C09J133/08C08F220/18
    • The present invention provides aqueous polymer dispersions comprising at least one particulate polymer P having a glass transition temperature Tg of less than 0° C. which is composed of ethylenically unsaturated monomers M including: i. from 60 to 94.9% by weight, preferably from 75 to 89.5% by weight, of n-butyl acrylate as monomer M1, ii. from 5 to 39.9% by weight, preferably from 10 to 24.5% by weight, of at least one monomer M2 selected from esters of methacrylic acid with C1 to C4 alkanols, tert-butyl acrylate, and vinylaromatic monomers, and iii. from 0.1 to 5% by weight, preferably from 0.5 to 2% by weight, of at least one monomer M3 selected from ethylenically unsaturated compounds having at least one acid group; the proportions of said monomers M1 to M3 being based on 100% by weight of monomers M, obtainable by free-radical aqueous emulsion polymerization of monomers M in the presence of at least 0.01% by weight, based on the weight of the monomers M, of at least one molecular weight regulator. The present invention also provides for the use of such polymer dispersions in adhesive formulations for producing laminates, a process for producing laminates, and the laminates obtainable by this process.
    • 本发明提供包含至少一种玻璃化转变温度Tg低于0℃的颗粒聚合物P的含水聚合物分散体,其由烯属不饱和单体M组成,包括: ii。从60至94.9重量%,优选75至89.5重量%的丙烯酸正丁酯作为单体M1。 至少一种选自甲基丙烯酸与C1至C4链烷醇的酯,丙烯酸叔丁酯和乙烯基芳族单体的单体M2的重量百分数为5至39.9%,优选为10至24.5%。 0.1至5重量%,优选0.5至2重量%的至少一种选自具有至少一个酸基的烯属不饱和化合物的单体M3;所述单体M1至M3的比例基于100重量% 的单体M,其通过基于单体M的至少一种分子量调节剂的至少0.01重量%存在的单体M的自由基水性乳液聚合而获得。 本发明还提供了这种聚合物分散体在用于生产层压材料的粘合剂制剂中的用途,生产层压材料的方法以及可通过该方法获得的层压材料。