One-pack room temperature-curable sealant composition for automobile

Abstract

A one-pack room temperature-curable sealant composition, namely, liquid gasket (FIPG) manifesting an excellent adhesive property and chemical resistance also for an automobile magnesium alloy material single body, and being able to be used also for cast iron and aluminum members and the like conventionally used is provided. (A) an organopolysiloxane which both ends of the molecular chain are each blocked by a hydroxyl group and the viscosity at 25° C. is from 30000 to 70000 mPa·s, (B) a cross-linking agent, (C) zinc carbonate and/or zinc oxide, (D) tabular alumina having an average particle size of 5 μm or less, and (E) a silane coupling agent of the following general formula (1): (wherein R1, R2 and R3 represent a divalent hydrocarbon group having 1 to 3 carbon.). are combined, to provide one-pack room temperature-curable sealant composition for use in automobile.

Dependencies are inferred from the claim text.