DEFOAMING AGENT

The object of the present invention is to provide a defoaming agent that is superior in defoaming properties (foam-breaking, foam-inhibiting effect, defoaming durability). The present invention is a defoaming agent comprising a fatty acid amide (A), a base oil (B) that is liquid at 25° C., an oil th...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: IZUMI YOSHIHIDE, MATSUMURA YOHEI, HISADA NOBUO
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The object of the present invention is to provide a defoaming agent that is superior in defoaming properties (foam-breaking, foam-inhibiting effect, defoaming durability). The present invention is a defoaming agent comprising a fatty acid amide (A), a base oil (B) that is liquid at 25° C., an oil thickening agent (C), and a surfactant (D), wherein the content of the fatty acid amide (A) is 1 to 10% by weight, the content of the base oil (B) that is liquid at 25° C. is 71 to 97.9% by weight, the content of the oil thickening agent (C) is 0.1 to 10% by weight, and the content of the surfactant (D) is 1 to 9% by weight based on the weight of the fatty acid amide (A), the base oil (B) that is liquid at 25° C., the oil thickening agent (C), and the surfactant (D), and the viscosity (25° C.) at a shear rate of 1000 s−1 is 0.1 to 1.0 Pa·s.