| abstract |
This room-temperature-curable polyorganosiloxane composition contains, for every 100 parts by mass of a polyorganosiloxane (A) comprising (A1) 10-80 parts by mass of an alkoxysilyl group end-blocked polyorganosiloxane and (A2) 90-20 parts by mass of a partial hydrolysis condensate (having 10-200 Si atoms) of a silane compound represented by the general formula R 4 n b Si(OR 5 ) 4-b , (B) 0.1-15 parts by mass of a silane compound or partial hydrolysis condensate thereof (having at least 1 and less than 10 Si atoms) as a cross-linking agent, and (C) 0.1-15 parts by mass of an organic titanium compound as a curing catalyst. The present invention forms a cured coating film having low viscosity, favorable coating properties without a solvent, and superior scratch resistance. |