Silica

Details Silica Silica

2003-07-29

2008-11-18

Ahmed, Sheeba (Department: 1794)

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

C428S331000, C428S357000, C428S403000, C428S423100, C428S425800

Reexamination Certificate

active

07452600

ABSTRACT:
Silanized, structurally modified, pyrogenically produced silicas, characterised by groups fixed to the surface, wherein the groups are dimethylsilyl and/or monomethylsilyl, are produced in that pyrogenically produced silica is treated by a known method with dimethyldichlorosilane and/or monomethyltrichlorosilane, the groups dimethylsilyl and/or monomethylsilyl being fixed on the surface of the pyrogenic silica, and is then structurally modified and optionally post-ground. They are used to improve scratch resistance in lacquers.

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patent: WO 01/64796 (2001-09-01), None

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