Surface-modified silicas

Details Surface-modified silicas Surface-modified silicas

2011-07-05

2011-07-05

Wu, David (Department: 1762)

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

C106S482000, C524S493000, C523S209000, C523S216000

Reexamination Certificate

active

07972431

ABSTRACT:
Surface-modified silicas Surface-modified, highly structured, potassium oxide-doped silicas, characterized by BET surface area, m2/g: 25-400 average primary particle size, nm: 5-50 pH: 3-10 carbon content, % by weight: 0.1-10 potassium oxide content, % by weight: 0.000001-40 are prepared by subjecting a potassium oxide-doped silica to surface modification. It can be used as a filler in silicone rubber compositions.

REFERENCES:
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patent: 2002/0168524 (2002-11-01), Kerner et al.
patent: 2005/0215668 (2005-09-01), Scholz et al.
patent: 2005/0215696 (2005-09-01), Scholz et al.
patent: 2009/0076194 (2009-03-01), Meyer et al.
patent: 2004 033544 (2004-04-01), None
patent: 2006 053632 (2006-05-01), None

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