SILICONE RUBBER SHEET COMPOSITION FOR MOLD CLEANING

摘要

PROBLEM TO BE SOLVED: To provide a silicone rubber composition for a cleaning sheet free from fouling problems with respect to the silicone rubber composition for cleaning a sheet of a transfer molding mold and the silicone rubber sheet. SOLUTION: The silicone rubber composition for mold cleaning comprises (A) organopolysiloxane expressed by an average compositional formula: RnSiO(4-n)/2; (B) reinforcing silica having a specific surface area of≥50 m2/g ; (C) an organopolysiloxane block copolymer having a diorganosiloxane block unit (a) and a trifunctional arylsiloxane unit (b) as essential units, and at least a part of the molecular terminals is blocked by a unit (c); and (D) a curing agent as essential components. COPYRIGHT: (C)2010,JPO&INPIT