Three-dimensional network structure comprising spherical silica

Details Three-dimensional network structure comprising spherical silica Three-dimensional network structure comprising spherical silica

1995-06-27

1997-08-12

Bell, Mark L.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423336, 501 80, 264 42, C01B 3312, C04B 3800

Patent

active

056562500

ABSTRACT:
A three-dimensional network structure comprising three-dimensionally interconnected spherical silica particles, having specific physical characteristics including diameter, pores on the surfaces of the particles, cross-sectional areas of the bonds interconnecting the spherical silica particles, elasticity modulus, voids content, and silica content, the surfaces of the spherical silica particles being wholly or partly covered with a water-soluble polymer, the network structure being able to remain substantially intact when heat-treated and being able to undergo machining. There is also provided a method of making a three-dimensional network structure comprising spherical silica particles, comprising hydrolyzing and polymerizing a low polymer of an alkoxysilane in a mixed solution containing the alkoxysilane low polymer and a water-soluble polymer in a mixed solvent composed of water and an alcohol in the presence of an acid catalyst.

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