B - Operations – Transporting – 01 – F
Patent
B - Operations, Transporting
01
F
B01F 3/10 (2006.01) B01F 3/08 (2006.01) B01F 3/14 (2006.01) B01F 5/16 (2006.01) B01F 7/00 (2006.01) C08J 3/03 (2006.01) B01F 5/00 (2006.01)
Patent
CA 2154060
Method and apparatus for preparing uniform highly dispersed emulsions by using a low drive power and without pressurization. They make possible the continuous mass production of uniform organopolysiloxane emulsions. An organopolysiloxane, water and a emulsifying agent, are continuously fed across a first-stage shearing and stirring device and a second-stage shearing and stirring device. The first- stage device is a stator and turbine-type rotor whose blades are slanted obliquely from the radial direction when viewed from the axial direction. The second-stage device is a stator and turbine-type rotor whose blades define spiral curves with respect to the axial direction. The two devices are arranged serially and are separated from one another by a relaxation zone. Emulsification is carried out in the first-stage device by an intake and shearing action at a shear rate of at least 100/second, and in the second-stage device by a phase reversal, rotating effect and shearing action at a shear rate of at least 100/second.
Hosokawa Hidehiko
Maeshima Junichi
Suto Fumitaka
Dow Corning Toray Silicone Company Ltd.
Gowling Lafleur Henderson Llp
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