| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a silicone composition for a wiper blade, which has little linear shrinkage at molding and has durability and good slidability.SOLUTION: There is provided the silicone composition composed of: 100 pts.wt. of (A) organopolysiloxane represented by the general formula RSiO(in the general formula, R is an unsubstituted or substituted monovalent hydrocarbon group, of which 0.0001 to 0.5 mol% is an alkenyl group, and a is a positive number of 1.95 to 2.05), and having a polymerization degree of 3,000 or more; 15 to 25 pts.wt. of (B) a reinforcing silica having a specific surface area of 150 m/g or more and an average particle diameter of 1 to 10 nm; 5 to 15 pts.wt. of (C) diatomaceous earth having an average particle diameter of 5μm or more and less than 12μm; 20 to 40 pts.wt. of diatomaceous earth having an average particle diameter of 12μm or more and less than 30μm; and a curing agent (E).</p> |
