Process for the preparation of organophilic metal oxide particle

Details Process for the preparation of organophilic metal oxide particle Process for the preparation of organophilic metal oxide particle

1995-06-26

1998-02-17

Lovering, Richard D.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Cosmetic, antiperspirant, dentifrice

106447, 252309, 2523152, 424 709, 427214, 427220, 428405, 514972, 524403, 524413, A61K 910, B01J 1300, B05D 700, C08K 322

Patent

active

057189072

ABSTRACT:
Organophilic particles of a metal oxide chosen from alumina Al.sub.2 O.sub.3, silica SiO.sub.2, transition metal oxides, especially titanium oxide TiO.sub.2, and rare-earth metal oxides, especially cerium oxide CeO.sub.2, are prepared by reacting an aqueous-alcoholic suspension (a) of metal Oxide particles which have no pores less than 5 nm in di-meter at their surface with an anhydrous alcoholic solution (b) comprising at least one alkoxysilane of formula (1)

REFERENCES:
patent: 3920865 (1975-11-01), Laufer et al.
patent: 4068024 (1978-01-01), Laufer
patent: 4522958 (1985-06-01), Das et al.
patent: 4740423 (1988-04-01), Kadokura et al.
patent: 4782040 (1988-11-01), Revis et al.
patent: 4937104 (1990-06-01), Puhringer
patent: 5013585 (1991-05-01), Shimizu et al.
patent: 5372905 (1994-12-01), Deusser et al.
patent: 5501732 (1996-03-01), Niedenzu et al.
Chemical Abstracts, vol. 94, No. 6, Feb. 9, 1981, Columbus, Ohio, US; Abstract No. 32299m, p. 90; col. L; JP-A-80 110 163 (Malvern Minerals), Aug. 25, 1980.

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