AMORPHOUS SILICA, ITS PREPARATION AND USES.

专利名称：AMORPHOUS SILICA, ITS PREPARATION

AND USES.

发明人：JOHNSTON, JAMES HOWARD,HARPER,

ROSS, THOMAS

申请号：EP94905874申请日：19940128公开号：EP0681559A4公开日：19960605

摘要：A silica product preferably obtained from geothermal water, its uses (e.g. withpaper) and preparation. It has a tertiary aggregate structure (preferably of Type I, II or IIIas defined in EP 0396242) with an average secondary particle dimensions up to about 30nm., an oil absorption of greater than about 190 g.100g-1 as measured by the spatularubout method using linseed oil, a light scattering coefficient greater than about 280m2.kg-1, a reflectance of greater than about 95 % at a wavelength of 557 nm.(usingilluminant D65 and 10° viewing angle), and a BET surface area of greater than about4m2.g-1.

申请人：TASMAN PULP & PAPER CO LIMITED,GEOCHEMISTRY RESEARCH LIMITED

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