Composite cured silicone powder and method for production thereof

摘要

A composite cured silicone powder comprising: (A) a cured silicone powder having an average particle size of 0.1 to 500 μm, (B) an inorganic fine powder coated on the surface of said cured silicone powder and (C) a monohydric or polyhydric alcohol with a boiling point of at least 150° C. coating on the surface of component (A) and/or component (B). The composite cured silicone powder that has an excellent flowability, hydrophilicity, and dispersibility. And, this invention also relates to a production method of the composite, which is characterized by mixing components (A) to (C) under the condition of mechanical shearing.

主权项

1. A composite cured silicone powder comprising:
(A) a cured silicone powder having an average particle size of 0.1 to 500 μm; (B) an inorganic fine powder coated on the surface of said cured silicone powder, and (C) a monohydric or polyhydric alcohol with a boiling point of at least 150° C. and a viscosity at 25° C. of not more than 500 mPa·s uniformly coated on the surface of component (A) and/or component (B), component (C) being present in an amount of 2 to 20 mass parts per 100 mass parts of component (A), wherein component (C) is selected from the group consisting of 1,3-butanediol, 1,2-pentanediol, and dipropylene glycol.