Patent ID: 6043309
Filing Date: 2000-03-28
Classification: C08G,C08K,C08L

Abstract:
A curable silicone rubber composition for use in high-voltage electrical insulating parts, comprising:(A) 100 parts by weight of a polyorganosiloxane containing two or more alkenyl groups bonded to silicon atoms in each molecule,(B) 1 to 60 parts by weight of formed silica with a specific surface area of 50 m.sup.2 /g or greater,(C) a polyorganohydridosiloxane which has at least two hydrogen atoms bonded to silicon atoms in each molecule, wherein the amount of this component is an amount which is such that the ratio of the number of moles of hydrogen atoms bonded to silicon atoms in the polyorganohydridosiloxane to the number of moles of alkenyl groups bonded to silicon atoms in component (A) is in the range of 0.5:1 to 20:1,(D) a catalytic amount of a platinum catalyst,(E) 1 to 150 parts by weight of finely powdered aluminum hydroxide, and(F) 1 to 150 parts by weight of a finely powdered metal compound selected from the group consisting of carbonates and hydrogen salts of a metal selected from the 1st, 2nd, 3rd, 7th, and 9th group of the periodic table.