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    • 5. 发明申请
    • Defoaming agents devoid of emulsifiers, method for producing said agents and use thereof
    • 不含乳化剂的消泡剂,生产所述试剂的方法及其用途
    • US20060276554A1
    • 2006-12-07
    • US10570154
    • 2004-08-27
    • Rainer Dyllick-BrenzingerMarkus SchmidJorg WehrleKlaus LorenzStefan BruhnsMichael Senge
    • Rainer Dyllick-BrenzingerMarkus SchmidJorg WehrleKlaus LorenzStefan BruhnsMichael Senge
    • B01D17/05
    • B01D19/0422B01D19/0404
    • 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.
    • 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。