Method for preparing composite microparticles

Details Method for preparing composite microparticles Method for preparing composite microparticles

2007-05-08

2007-05-08

Langel, Wayne A. (Department: 1754)

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C106S437000, C423S337000, C423S618000, C423S625000, C423S659000, C427S225000

Reexamination Certificate

active

10978084

ABSTRACT:
Composite microparticles having thin coating layers can be simply prepared by bringing a host particle precursor into contact with a flame generated in a burner movably mounted at the bottom of a coating apparatus, by introducing the precursor in the form of a vapor or micronized liquid droplets upwardly into the burner, to obtain host particles; and introducing a gaseous coating precursor upwardly toward the host particles in or around the flame, the coating precursor being protected by an inert gas introduced therearound such that the formation of particles derived from the coating precursor itself is prevented.

REFERENCES:
patent: 5268337 (1993-12-01), Katz et al.
patent: 2002/0004029 (2002-01-01), Jang et al.
patent: 2003/0129153 (2003-07-01), Moerters et al.
patent: 2004/0007025 (2004-01-01), Gotoh et al.
Gas-phase coating of TiOz with SiOz in a continuous flow hot-wall aerosol reactor; QH Powell, et al., J. Mater, Res. vol. 12, No. 2, Feb. 1997, pp. 552-559.

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