Curable organopolysiloxane preparations

Details Curable organopolysiloxane preparations Curable organopolysiloxane preparations

C - Chemistry, Metallurgy

08

L

C08L 83/07 (2006.01) C08K 5/5419 (2006.01) C08K 5/544 (2006.01) C08K 5/56 (2006.01) C08L 83/04 (2006.01) C08L 83/05 (2006.01) C08L 83/06 (2006.01)

Patent

CA 2365160

Compositions prepared by mixing (A) 5O-90 wt% of organopolysiloxane having a viscosity of from 50 to 100106 mm2/s at 25°C, (B) 10-50 wt% of a metal oxide from the group consisting of titanium oxide, zirconium dioxide, zinc oxide, cerium(III) and cerium(IV) oxide, (C) 0.3-5 wt% of organosilicon compound containing basic nitrogen bound to silicon via carbon, (D) 0.05-0.5 wt% of platinum calculated as the element, in the form of a bis(alkynyl)platinum complex which additionally includes donor ligands, and (E) from 0 to 5 wt% , preferably 0 wt % , of further components, the sum of the percentages chosen within each of the ranges specified under (A) to (E) being 100 wt% , and the wt % in each case being based on the total weight of the additive, are highly suitable as additives to crosslinkable organosilicon compositions, providing one or more of improved tracking resistance, high arc resistance, and decreased flammability.

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