| 摘要 |
PURPOSE:To obtain the subject composition excellent in durability at high temperatures by mixing a silicone oil composed of dimethyl silicone as the main component with a free radical scavenging-type antioxidant and an improver for heat resistance in a specified ratio. CONSTITUTION:(A) A silicone oil containing >=75wt.% dimethyl silicone, (B) 0.01-2.0wt.% free radical scavenging-type antioxidant (e.g., amine-based antioxidant such as phenyl-alpha-naphthylamine or phenol-based antioxidant such as 2,6-di-t- butylphenol) and (C) 0.01-2.0wt.% improver for heat resistance (e.g., cerium naphthoate, ferrocene or zirconium octoate) are mixed to provide the objective composition. |
