| 摘要 |
A process for preparing a defoamer composition by providing a high-shear, in-line mixer having a rotor-stator assembly with at least one concentric set of shearing teeth which rotate at a tip speed of up to about 25 meters per second and feeding to said mixer a melt of a hydrophobic defoaming agent along with a functional carrier liquid at a controlled mass flow rate and temperature. After mixing, the mixture is cooled and discharged into a receiving vessel.
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