LOW MODULUS ROOM TEMPERATURE VULCANIZABLE SILICONE RUBBER COMPOSITIONS

摘要

A low modulus room temperature vulcanizable silicone rubber sealant composition with a good shelf life comprising a silanol containing polysiloxane, a filler, an acyloxy functional silane as the cross-linking agent and as the catalyst a compound which is a zinc salt or a zirconium salt of a carboxylic acid or a co-catalyst system comprising as one co-catalyst a tin salt of carboxylic acid and as the other co-catalyst either a zinc salt or a zirconium salt of a carboxylic acid.