| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a defoaming agent composition which has an excellent sustaining defoaming effect. <P>SOLUTION: The defoaming agent composition contains amphiphilic particles (a) and an oily component (b). The amphiphilic particles (a) are composed of secondary aggregation particles consisting of hydrophilic fine particles composed of silica and/or alumina, and hydrophobic fine particles. The surface of the secondary aggregation particles is divided into two sections, a hydrophilic surface and a hydrophobic surface. Based on the weight of the amphiphilic particles (a) and the oily component (b), preferably the amount of the amphiphilic particles (a) is 0.1-15 wt.% and the amount of the oily component (b) is 85-99.9 wt.%. Further, water (c) is preferably contained. <P>COPYRIGHT: (C)2012,JPO&INPIT |
