Silica filled RTV compositions having adhesion to glass and ceramic materials

摘要

A silica filled room temperature vulcanizing (RTV) composition, curable in the presence of moisture and having good adhesion to glass and ceramic materials. The RTV composition comprises (A) 20 to 95 weight percent polymers comprising on average at least 1.2 hydroxysilyl chain terminations per molecule or on average at least 1.2 alkoxysilyl chain terminations per molecule; (B) 0.05 to 1.4 weight percent of a titanium compound; (C) a sufficient amount of an aminofunctional alkoxysilane to provide a nitrogen concentration from 0.01 to 2 weight percent; (D) 0.5 to 40 weight percent of an alkoxysilane; and (E) 3 to 40 weight percent of a silica filler.