Paper and cardboard packaging with barrier coating of a polymer mixture
    28.
    发明授权
    Paper and cardboard packaging with barrier coating of a polymer mixture 有权
    纸和纸板包装与聚合物混合物的阻隔涂层

    公开(公告)号:US09034444B2

    公开(公告)日:2015-05-19

    申请号:US13483762

    申请日:2012-05-30

    摘要: Paper or cardboard packaging produced from recycled paper contaminated by mineral oil, where the packaging includes a barrier layer obtained by applying an aqueous polymeric dispersion containing a mixture of at least two polymers A and B. Polymer A is obtained by emulsion polymerization of C1-C4 alkyl(meth)acrylates, acid monomers, e.g., acrylic acid or methacrylic acid, 0-20 wt % of acrylonitrile and 0-10 wt % of further monomers, where the glass transition temperature of copolymer A is greater than +45° C. and the glass transition temperature of polymer B is less than +10° C. The mean value calculated from the glass transition temperatures of the individual polymers is +10 to +45° C. The barrier layer may be situated on one of the surfaces of the packaging or form one of multiple layers of a multilayered packaging coating or be situated as a coating on one side of an inner bag situated within the packaging.

    摘要翻译: 由矿物油污染的再生纸生产的纸或纸板包装,其中包装包含通过施加含有至少两种聚合物A和B的混合物的水性聚合物分散体获得的阻隔层。聚合物A通过C1-C4的乳液聚合 烷基(甲基)丙烯酸酯,酸单体,例如丙烯酸或甲基丙烯酸,0-20重量%的丙烯腈和0-10重量%的其它单体,其中共聚物A的玻璃化转变温度大于+ 45℃。 聚合物B的玻璃化转变温度低于+ 10℃。由各聚合物的玻璃化转变温度计算出的平均值为+ 10〜+ 45℃。阻挡层可以位于 包装或形成多层包装涂料的多层之一,或者作为涂层位于位于包装内的内袋的一侧上。