Method of hydrophobing silica

Details Method of hydrophobing silica Method of hydrophobing silica

1989-05-19

1990-08-21

Lovering, Richard D.

Coating processes

Particles, flakes, or granules coated or encapsulated

Solid encapsulation process utilizing an emulsion or...

10628713, 106490, 252309, 252312, 2523132, 427221, B05D 700, B01J 1300, B01J 1312

Patent

active

049505025

ABSTRACT:
A method of producing hydrophobic colloidal silica is disclosed. The method comprises combining an aqueous colloidal silica dispersion, polyorganosiloxane, and anionic surfactant to yield a stable aqueous emulsion of hydrophobic colloidal silica. The emulsion may be further processed by evaporating the water to yield a white material which may be easily ground to a fine powder of hydrophobic colloidal silica. This powder is useful as a reinforcement for silicone rubber.

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