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    Defoaming agents devoid of emulsifiers, method for producing said agents and use thereof
    1.
    发明申请
    Defoaming agents devoid of emulsifiers, method for producing said agents and use thereof 审中-公开
    不含乳化剂的消泡剂，生产所述试剂的方法及其用途

    公开(公告)号：US20060276554A1

    公开(公告)日：2006-12-07

    申请号：US10570154

    申请日：2004-08-27

    申请人： Rainer Dyllick-Brenzinger ,  Markus Schmid ,  Jorg Wehrle ,  Klaus Lorenz ,  Stefan Bruhns ,  Michael Senge

    发明人： Rainer Dyllick-Brenzinger ,  Markus Schmid ,  Jorg Wehrle ,  Klaus Lorenz ,  Stefan Bruhns ,  Michael Senge

    IPC分类号： B01D17/05

    CPC分类号： B01D19/0422 ,  B01D19/0404

    摘要： Emulsifier-free antifoams are obtainable by mixing a) from 80 to 99% by weight of at least one finely divided, virtually water-insoluble, inert solid with b) from 1 to 20% by weight of at least one hydrophobic, organic compound which has an antifoam action and is solid at room temperature in the absence of a solvent in a shear gradient such that the particle size of the compounds (b) which have an antifoam action is reduced to a mean particle size of from 0.5 to 15 μm, emulsifier-free oil-in-water dispersions of mixtures of (a) and (b) are prepared by mixing the component (a) in an amount of from 80 to 99% by weight with the compounds of component (b) in an amount of from 1 to 20% by weight in the absence of emulsifiers in an extruder or kneader in a manner such that the mean particle size of the component (b) in the mixture is brought to 0.5 to 15 μm, at up to 100° C., and emulsifying the mixture in water, and the oil-in-water dispersions thus obtainable are used as antifoams and/or deaerators for aqueous, disperse or nondisperse liquids, in particular as antifoams and/or deaerators in the paper industry, in the food industry and in wastewater treatment plants.

    摘要翻译： 不含无乳化剂的消泡剂可通过将a）80至99重量％的至少一种细分的，实际上不溶于水的惰性固体与b）1至20重量％的至少一种疏水性有机化合物 具有消泡作用，并且在不存在溶剂的剪切梯度的情况下在室温下是固体，使得具有消泡作用的化合物（b）的粒度降低至0.5至15μm的平均粒度， （a）和（b）的混合物的无乳化剂的水包油分散体通过将组分（a）以80至99重量％的量与组分（b）的化合物的量以 在挤出机或捏合机中，在不存在乳化剂的情况下为1至20重量％，使混合物中组分（b）的平均粒度达到0.5至15μm，在高达100℃ 并将混合物乳化在水中，并且由此获得的水包油分散体用作消泡剂和/或 用于水性，分散或非分散液体的脱气器，特别是在造纸工业，食品工业和废水处理厂中的消泡剂和/或脱气剂。