| 摘要 |
PROBLEM TO BE SOLVED: To provide a room temperature curable organopolysiloxane composition which shows less change with time and provides a cured product excellent in oil resistance, a method for producing the same, and an automobile oil seal. SOLUTION: The method for producing the room temperature curable organopolysiloxane composition, which includes (A) 100 pts.mass of a diorganopolysiloxane which has a molecular chain whose both ends are blocked with hydroxy groups and/or hydrolyzable groups and a viscosity at 25°C of 25-1,000,000 mPa s, (B) 0.5-30 pts.mass of an organosilane containing three or more hydrolyzable groups in one molecule (except a silane coupling agent) and/or a partial hydrolysate thereof, (C) 0.1-20 pts.mass of a silane coupling agent and/or a partial hydrolysate thereof, and (D) 1-500 pts.mass of a basic filler, includes adding the components (B) and (C), which are previously aged, to the components (A) and (D). COPYRIGHT: (C)2010,JPO&INPIT |
