Patent Number: 6,251,958

Title: Defoamer process

Abstract: 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.

Inventors: Pichai; Puvin (Collegeville, PA), Breindel; Kenneth (Lansdale, PA)

Assignee: Henkel Corporation

International Classification: B01D 19/02 (20060101); B01D 19/04 (20060101); B01F 003/12 ()

Expiration Date: 06/26/2018