专利名称：METHOD FOR PRODUCING SPHERICAL
SILICA PARTICLES
发明人：MORI, Hiroo,KUSAKA, Makoto,HIRANO,
Hachiro
申请号：EP99913577.5申请日：19990408公开号：EP1020402A1公开日：20000719
摘要：It is an object of the present invention to obtain solid spherical silica particleshaving no depression or crack on the surface. The present invention provides a processfor producing spherical silica particles, which comprises dispersing silica gel particleshaving an average particle size of from 0.05 to 3.0 µm in a mixed solution of an alkalisilicate and an acid, spraying the dispersion to obtain droplets, and heating the dropletsin a gas and gelating the mixed solution portion of an alkali silicate and an acid in thedroplets.
申请人：ASAHI GLASS COMPANY LTD.
地址：12-1, Yurakucho 1-chome, Chiyoda-ku Tokyo 100-8405 JP
国籍：JP
代理机构：Müller-Boré & Partner Patentanwälte
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