| http://www.w3.org/ns/prov#value | - Further, stock solutions of phenylheptamethylcyclotetrasiloxane, 2,6-cis-diphenylhexamethylcyclotetrasiloxane, and silicon resin as raw material, or their solutions in an organic solvent such as toluene or xylene, are prepared, and a filler consisting of ultrafine powder silica, oxide particles of e.g. alumina or titanium, and SiO2 fine particles is added.
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