| 摘要 |
A liquid form addition curing type silicone rubber composition for roll forming purposes is provided which displays excellent stability and little variation in viscosity over time at room temperature, and yet also offers excellent curability at high temperature. The composition includes: (a) 100 parts by weight of an organopolysiloxane with at least two alkenyl groups bonded to non-terminal silicon atoms within the molecular chain of each molecule, (b) 1 to 300 parts by weight of an inorganic filler, (c) an effective quantity of a platinum based catalyst, and (d) an organohydrogenpolysiloxane represented by the general formula (2), wherein, R3 represents an unsubstituted or a halogen-substituted monovalent hydrocarbon group with no aliphatic unsaturated double bonds, each R4 represents, independently, either an unsubstituted or a halogen-substituted monovalent hydrocarbon group with no aliphatic unsaturated double bonds, or a hydrogen atom, and x represents an integer of 2 or greater, with at least two silicon atom-bonded hydrogen atoms within a single molecule, in sufficient quantity to produce a molar ratio of silicon atom-bonded hydrogen atoms within the constituent (d) relative to the alkenyl groups within the constituent (a) of 0.1 to 5.
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