Non-porous spherical silica and method for production thereof

Details Non-porous spherical silica and method for production thereof Non-porous spherical silica and method for production thereof

2006-07-04

2006-07-04

Nguyen, Ngoc-Yen (Department: 1754)

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

C423S339000, C423S335000

Reexamination Certificate

active

07070748

ABSTRACT:
Non-porous spherical silica having a mean particle diameter of 0.1–20 μm and satisfying the following conditions:(a) a maximum particle diameter is 4 times the mean particle diameter or less;(b) η1/η2<1.0, wherein η1 and η2 are the viscosity of a 70:30 (by weight) mixture of the non-porous spherical silica and a Bisphenol A type liquid epoxy resin, as measured at a rotation number of 0.5 rpm and 2.5 rpm, respectively, in a viscometer.

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