Alkenyl polyorganosiloxane, organohydrogensiloxane, organosilicon or silane treated silver particles and Pt catalyst

摘要

A composition comprises the product obtained by homogeneously blending:(A) 100 parts by weight of a polyorganosiloxane containing at least two alkenyl radicals per molecule,(B) an organohydrogensiloxane containing at least two silicon-bonded hydrogen atoms per molecule in a quantity sufficient to provide from 0.5 to 3 silicon-bonded hydrogen atoms per alkenyl radical of (A),(C) from 50-2000 parts by weight of silver particles pre-treated with an organosilicon compound selected from the group consisting of (i) alkoxy group(s)-containing silanes and (ii) organosiloxanes,(D) a platinum catalyst,(E) up to 20 weight percent based on the weight of (A) of an organosilicon compound containing at least one silicon-bonded alkoxy group per molecule, and(F) from 0.001 to 5 parts by weight per 100 parts by weight of (A) of a cure inhibitor.