USE OF A PRETREATED PRECIPITATED SILICA AS A REINFORCING FILLER FOR SILICONE ELASTOMER AND THE CURABLE SILICONE ELASTOMER COMPOSITIONS THUS OBTAINED BY COLD MIXING

摘要

The invention as a reinforcing filler for silicone elastomer, at least one organosilane hydrophobing compound or as by one of the hydrophobic silicone oil and the use of a pre-precipitated silica and the pretreated silica is in the silicone elastomer by cold mixing incorporation and has the following features: ; And a BET specific surface of 50 to 450 ㎡ / g, ; And rectify yunseongyi less than 80, ; The sulfur content is less than 0.1% by weight of being. ; The present invention relates to a vulcanizable silicone elastomer compositions obtained accordingly.