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    • 4. 发明授权
    • Defoaming agent and/or deaerator for aqueous media tending to foam
    • 用于水性介质的消泡剂和/或脱气剂倾向于发泡
    • US07763664B2
    • 2010-07-27
    • US10519405
    • 2003-07-16
    • Johann BonnKlaus LorenzJoerg WehrleManfred Matz
    • Johann BonnKlaus LorenzJoerg WehrleManfred Matz
    • B01D19/04D21C3/28D21H21/12B01F3/12
    • D21H21/12B01D19/0404B01D19/0413B01D19/0422
    • A defoaming agent and/or deaerator for aqueous foamable media based on oil-in-water dispersions. The oil phase contains at least one compound from fatty alcohols, fatty acid monoglycerides, diglycerides, and triglycerides, fatty acid ester of fatty acids and monovalent to trivalent alcohols, 3-thiaalkane-1-ole, 3-thiaoxide alkane-1-ole, 3-thiadioxide-alkane-ole, and thiaalkane esters in combination with (i) at least one polyglycerine that is obtained by esterification of at least 20 percent of polyglycerine with 12 to 36 C carboxylic acid, and (ii) at least one bisamide consisting of ethylene diamine and 10 to 36 C atom carboxylic acids, while the aqueous phase thereof contains at least one stabilizer, water, and an optional thickener, for aqueous media that tend to foam. Also disclosed are methods of controlling foam by adding the dispersions to a process, particularly during cellulose boiling, cellulose washing, grinding of paper pulp, paper production, and dispersion of pigments used for paper production.
    • 一种基于水包油分散体的含水可发泡介质的消泡剂和/或脱气剂。 油相包含至少一种脂肪醇,脂肪酸单甘油酯,甘油二酯和甘油三酸酯,脂肪酸脂肪酸酯和一价至三价醇的化合物,3-硫代烷-1-烯,3-硫氧化物烷-1-醇, 三硫代 - 烷烃 - 烯烃和硫代烷烃酯与(i)至少一种通过至少20%的聚甘油与12至36℃羧酸酯化获得的聚甘油,和(ii)至少一种双酰胺 的乙二胺和10至36C原子的羧酸,而其水相含有至少一种稳定剂,水和任选的增稠剂,用于易于发泡的水性介质。 还公开了通过将分散体加入到方法中,特别是在纤维素沸腾,纤维素洗涤,纸浆研磨,造纸和用于纸张生产的颜料的分散体中来控制泡沫的方法。