| abstract |
The silicone rubber composition of the invention comprises, as the peroxide curing agent, a neopentane diol derivative represented by the general formula R1-O-O-CO-O-CH2-C(CH3)2-CH2-O-CO-O-O-R2, in which R1 and R2 are each, independently from the other, a monovalent hydrocarbon group having 3 to 10 carbon atoms or a silyl group of the general formula -SiR33, R3 being a methyl, ethyl or phenyl group, such as trimethyl silyl, in admixture with a diorganopolysiloxane and a reinforcing silica filler. By virtue of this unique formulation, the silicone rubber composition is suitable for hot-air vulcanization without compression as in the vulcanization process by extrusion molding followed by heating in a hot-air oven. |