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    • 5. 发明申请
    • A WATER-BASED ADHESIVE COMPOSITION AND A PROCESS TO FOAM IT
    • 一种基于水的粘合剂组合物及其制造方法
    • WO2010139362A1
    • 2010-12-09
    • PCT/EP2009/056826
    • 2009-06-03
    • HENKEL AG & CO. KGAACAVALLI, Dario
    • CAVALLI, Dario
    • C09J5/08C08J9/08
    • C09J5/08C08J9/08C08J2201/022C08J2207/02C09J2403/00C09J2429/00C09J2431/00
    • A process to apply a foamable water-based adhesive which is an aqueous polymer solution or dispersion, wherein a) a first aqueous polymer solution or dispersion which has a pH-value above 6 and which contains a dissolved or dispersed salt, which liberates a gas when it is combined at a pressure of 1.01 bar (1 atm) with an acidic solution with a pH-value of lower than 5 is provided in a first container, b) a second aqueous polymer solution or dispersion which comprises an acid and which has a pH-value of lower than 5 is provided in a second container, c) the first and the second aqueous polymer solution or dispersion are combined in a pressure-tight container having an outlet valve, d) the combined aqueous polymer solution or dispersion, which forms the water-based adhesive, is released from the pressure-tight container through the outlet valve onto a substrate at a pressure lower than the pressure within the first container, whereby the gas liberated from the dissolved or dispersed salt during and after step c) forms gas bubbles in the aqueous polymer solution or dispersion leaving the valve, thus foaming the aqueous polymer solution or dispersion. The two-component foamable water-based adhesive which can be used in this process forms also part of the invention.
    • 一种施加作为聚合物水溶液或分散体的可发泡水性粘合剂的方法,其中a)pH值高于6并且含有溶解或分散的盐的第一种聚合物水溶液或分散体,其释放出气体 当在第一容器中提供在1.01巴(1大气压)的压力下与pH值低于5的酸性溶液组合时,b)第二含水聚合物溶液或分散体,其包含酸并且具有 在第二容器中提供小于5的pH值,c)将第一和第二聚合物水溶液或分散体合并在具有出口阀的耐压容器中,d)组合的聚合物水溶液或分散体, 形成水性粘合剂的压力通过出口阀从耐压容器以低于第一容器内的压力的压力释放到基材上,从而溶解或分散的盐 t)在步骤c)期间和之后,在离开阀的聚合物水溶液或分散体中形成气泡,从而使聚合物水溶液或分散体发泡。 可用于该方法的双组分可发泡水性粘合剂也是本发明的一部分。