Patent ID: 7385000
Filing Date: 2008-06-10
Classification: C08G,C08L

Abstract:
1. A silicone rubber composition comprising (A) 100 parts by weight of at least one diorganopolysiloxane comprising units of the formula (1) where R R a, b are each a positive number, with the proviso that 1≦a<3, 0<b≦1 and 1<a+b≦3, with each molecule having on average at least two monovalent hydrocarbon radicals containing aliphatic carbon-carbon multiple bonds of this type bound to silicon atoms, (B) from 1 to 100 parts by weight, based on 100 parts by weight of (A), of finely divided silica having a specific surface area, measured by the BET method, of 50-300 m (C) 50-300 parts by weight, based on 100 parts by weight of (A), of at least one aluminum hydroxide powder having a specific surface area, measured by the BET method, of 0.1-20 m (D) crosslinkers in an amount sufficient to cure the composition, with this crosslinker being selected from the group consisting of and (E) 0.01-10.0 parts by weight, based on 100 parts by weight of (A), of at least one of an inorganic base, inorganic acid, organic acid, organosilicon acid or a compound which liberates an inorganic base, inorganic acid, or organic or organosilicon base or acid on heating, an organic amine, aniline, dimethylalinine, toluidine, pyridine, and their alkyl-substituted derivatives, urea, N-alkylurea derivative, N-triorganylsilylcarbamic ester, N-triorganylsilyl-carbamate, or N-triorganylsilylurea.