LIQUID SILICONE RUBBER COMPOSITION FOR HIGH-VOLTAGE ELECTRICAL INSULATING PART AND ITS PRODUCTION

Japanese Patent JP3544092

B2

PROBLEM TO BE SOLVED: To obtain a liq. silicone rubber compsn. which has a suitable flowability before curing and is excellent in moldability and high-voltage electrical insulating properties by compounding an organopolysiloxane, fumed silica having a specified specific surface area, an organohydrogenpolysiloxane, a platinum catalyst, a fine aluminum hydroxide powder, and a metal carbonate.
SOLUTION: This compsn. contains 100 pts.wt. organopolysiloxane (A) having at least two Si-bonded alkenyl groups in one molecule, 1-60 pts.wt. fumed silica (B) having a specific surface area of 50m2/g or higher, an organohydrogenpolysiloxane (C) having at least two Si-bonded hydrogen atoms in one molecule in a molar ratio of Si-bonded hydrogen atom to Si-bonded alkenyl group of 0.5-20, a catalytic amt. of a platinum catalyst (D), 1-150 pts.wt. fine aluminum hydroxide powder (E), and 1-150 pts.wt. fine powder of a (hydrogen)carbonate of a metal of group 1, 2, 3, 7, or 9 of the periodic table (F).

Yasumichi Shigehisa
Yuichi Tsuji
Aketo Nakamura

JP3326397A

July 21, 2004

January 31, 1997

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Toray Dow Corning Silicone Co., Ltd.

C08K3/26; C08K3/36; C08K5/3475; C08K5/5419; C08L83/04; C08L83/05; C08L83/07; C08K3/22; H01B3/46; H01B7/295; (IPC1-7): C08L83/07; C08K3/22; C08K3/26; C08K3/36; C08K5/3475; C08L83/05; H01B3/46

JP55066799A
JP8325459A
JP8325458A
JP52032950A
JP7057574A
JP8249925A
JP9171729A
JP5025394A
JP9320342A
JP57195150A
JP4209655A
JP9316335A
JP9316336A
JP10212414A

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