Silica-containing polyorganosiloxane compositions

Details Silica-containing polyorganosiloxane compositions Silica-containing polyorganosiloxane compositions

C - Chemistry, Metallurgy

08

L

253/20, 400/7224

C08L 83/04 (2006.01) C08K 3/36 (2006.01)

Patent

CA 1320778

SILICA-CONTAINING POLYORGANOSILOXANE COMPOSITIONS ABSTRACT In a silica-containing polyorganosiloxane com- position of the present invention, because the ultrafine silica powder or its mixture with polyorganosiloxane has an acid strength, as measured by it's pKa value in nonpolar solvent, falling within a specific range of from greater than or equal to 4.0 and less than or equal to 9.2; the excellent effect accrues that the chemical composition of the polyorganosiloxane component will remain the same during production or during long-term storage.

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