Process of producing hydrophobic titanium oxide fine particle

Details Process of producing hydrophobic titanium oxide fine particle Process of producing hydrophobic titanium oxide fine particle

1993-02-17

1995-05-02

Beck, Shrive

Coating processes

Particles, flakes, or granules coated or encapsulated

Inorganic base

427212, 427215, B05D 700

Patent

active

054117615

ABSTRACT:
A process of producing hydrophobic titanium oxide fine particles, comprising the steps of dispersing titanium oxide fine particles in an aqueous alkaline solution, adding a trialkoxysilane to the resulting dispersion in an amount of 1 to 1,000 parts by weight per 100 parts by weight of the titanium oxide fine particles, and carrying out the hydrolysis, whereby a film of a hydrolysis condensation product of the trialkoxysilane is formed on the surface of the titanium oxide fine particles. According to the present invention, titanium oxide fine particles can be treated quite effectively to be rendered hydrophobic without damaging the powdery nature of the titanium oxide.

REFERENCES:
patent: 4015031 (1977-03-01), Reinhardt et al.
patent: 4073972 (1978-02-01), Nestler et al.
patent: 4828954 (1989-05-01), Hashimoto et al.

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