Room temperature curable organopolysiloxane compositions

摘要

A room temperature curable organopolysiloxane composition comprising (A) a branched organopolysiloxane having specific radicals on side chains or on side chains and ends of the polymer, (B) fumed silica, (C) an organooxysilane or a partial hydrolytic condensate thereof, and (D) a condensation catalyst is improved in stability during storage under sealed conditions and cures into an elastomeric product whose physical properties change little even when used under rigorous conditions as encountered in proximity to automotive engines.