Organopolysiloxane compositions, their preparation and use, rubber articles coated with them.

摘要

An organopolysiloxane composition contains (A) a both end hydroxyl-blocked diorganopolysiloxane, (B) a hydroxyl - free diorganopolysiloxane having a degree of polymerization equal to or greater than that of (A), (C) an organohydrogenpolysiloxane having at least three hydrogen atoms in a molecule, (D) an organosilane containing at least two alkoxy groups and a mercapto group attached to a silicon atom through an alkylene group in a molecule and/or a partial hydrolyzate thereof, (E) an organosilane containing at least two alkoxy groups and an amino group attached to a silicon atom through an alkylene group in a molecule and/or a partial hydrolyzate thereof, (F) a fatty acid metal salt, and (G) polycarbonate powder having a mean particle size of up to 50 mu m. It is applied to a rubber part to form a wear resistance coating thereon.