Aqueous polymeric dispersions, paper coating compositions and coated
paper articles made therewith
    1.
    发明授权
    Aqueous polymeric dispersions, paper coating compositions and coated paper articles made therewith 失效
    水性聚合物分散体,纸涂料组合物和用其制成的涂布纸制品

    公开(公告)号:US4258104A

    公开(公告)日:1981-03-24

    申请号:US34061

    申请日:1979-04-27

    摘要: Lightweight coated paper articles having a desirable combination of properties are obtained through the use of coating compositions employing as the binder component thereof certain novel polymeric dispersions which comprise a major proportion on a dry basis of an alkali insoluble polymer and a minor proportion (e.g., from about 0.5 to about 25 weight percent on a dry basis based upon the alkali insoluble polymer) of certain alkali soluble polymers. Exemplary of the alkali insoluble polymers employed herein are both the carboxylated and noncarboxylated versions of known addition polymerized synthetic polymers having a glass transition temperature of about 50.degree. C. or less. Exemplary of the alkali soluble polymers employed herein are synthetic addition polymers comprising (in polymerized form and in weight percent based on such polymer) from about 40 to about 90 percent of a vinyl ester of a carboxylic acid (e.g., vinyl acetate, vinyl propionate, etc.); from about 5 to about 55 percent of the nitrile or a C.sub.1 -C.sub.8 alkyl ester of a monoethylenically unsaturated carboxylic acid; and from about 5 to about 15 percent of a monoethylenically unsaturated carboxylic acid.

    摘要翻译: 具有期望的性能组合的轻质涂布纸制品通过使用涂料组合物获得,所述涂料组合物使用某些新型聚合物分散体,所述新型聚合物分散体在干基的基础上包含碱不溶性聚合物和较小比例(例如, 约0.5至约25重量%,基于碱不溶性聚合物)。 本文所用的碱不溶性聚合物的实例是玻璃化转变温度为约50℃或更低的已知加成聚合合成聚合物的羧化和非羧化形式。 本文使用的碱溶性聚合物的实例是包含(以聚合形式和基于该聚合物的聚合形式和重量百分比)约40至约90%的羧酸乙烯基酯(例如,乙酸乙烯酯,丙酸乙烯酯, 等等。); 约5至约55%的腈或单烯属不饱和羧酸的C1-C8烷基酯; 和约5至约15%的单烯键式不饱和羧酸。