Patent ID: 7683125

Claim:
A method of manufacturing a silicone rubber, said method comprising: a first stage comprising (1-1) the step of preparing an aqueous dispersion of a filler composed of 10 to 300 part by weight of water that contains a water-soluble polymer (E), 1 to 40 part by weight of a finely powdered silica filler (B), 0 to 500 part by weight of a conductive filler (C), and 0 to 500 part by weight of a non-conductive inorganic filler (D) excluding the finely powdered silica filler, where the total amount of components (B), (C), and (D) is within the range of 1 to 500 part by weight; and (1-2) the step of preparing an aqueous emulsion by stirring and mixing in an arbitrary sequence the aforementioned aqueous dispersion of a filler with the following components: 100 part by weight of an organopolysiloxane (A) that contains in one molecule at least two silicon-bonded alkenyl groups and that has a viscosity of 100 to 500,000 mPa·s at 25° C.; 0.1 to 10 part by weight of an emulsification agent (F); and a curing agent (G); and a second stage for obtaining the silicone rubber, the second stage comprising (2-1) curing the aqueous emulsion prepared in the aforementioned first stage, forming a wet silicone rubber-like cured body, and then removing water from the aforementioned wet silicone rubber-like cured body; or (2-2) dehydrating and curing the aqueous emulsion prepared in the aforementioned first stage.