Patent Number: 6,294,636

Title: Silicone rubber composition

Abstract: A silicone rubber composition, comprising: (A) an polyorganosiloxane gum represented by the following average structural formula: R.sub.a SiO.sub.(4-a)/2 (where R is a substituted or non-substituted monovalent hydrocarbon, and a is a number between 1.8 and 2.3); (B) microparticulate silica; and (C) a methyl-substituted benzoyl peroxide having the maximum grain diameter not exceeding 50 .mu.m and an average grain diameter of 30 .mu.m. When cured, the silicone rubber composition has reduced nonuniformity in the physical properties because of fewer voids, resulting in decreased frequency of spark-outs in the insulated wires.

Inventors: Baba; Katsuya (Chiba Prefecture, JP), Hirai; Kazuo (Chiba Prefecture, JP), Matsushita; Takao (Chiba Prefecture, JP)

Assignee: Dow Corning Toray Silicone Company, Ltd.

International Classification: C08K 3/36 (20060101); C08K 3/00 (20060101); C08L 83/00 (20060101); C08L 83/04 (20060101); C08G 077/08 (); C08G 077/06 ()

Expiration Date: 09/25/2018