Patent ID: 7886499

Claim:
A building exterior wall having a coating thereon, the coating is formed from an emulsion composition comprising in admixture, a graft copolymerized emulsion obtained by adding to (1) an oil-in-water type emulsion containing at least one organopolysiloxane having the general formula (I): wherein R 1 , R 2 and R 3 each are a monovalent hydrocarbon group or monovalent halogenated hydrocarbon group having 1 to 20 carbon atoms, Y is an organic group containing a radical reactive group or SH group, X is hydrogen, a monovalent lower alkyl group or a group of the formula: R 1 R 2 R 4 Si wherein R 4 is R 1 or Y, and R 1 , R 2 and Y are as defined above, m is an integer of 1 to 10,000, and n is an integer of at least 1, (2) a monomer or monomeric mixture containing at least 70% by weight of at least one monomer selected from acrylic and methacrylic monomers having the general formula (II): wherein R 5 is hydrogen or methyl, and R 6 is an alkyl or alkoxy-substituted alkyl group having 1 to 18 carbon atoms, so that a weight ratio of the organopolysiloxane of component (1) and the monomer or monomeric mixture of component (2) is 5:95 to 95:5, and effecting emulsion graft polymerization of component (2) to the organopolysiloxane, and a silicone resin-containing emulsion obtained by mixing a silicone resin having the average compositional formula (i): R 7 a R 8 b Si(OH) p (OX) q O (4−a−b−p−q)/2 (i) wherein R 7 is an unsubstituted monovalent hydrocarbon group of 1 to 10 carbon atoms, R 8 is a substituted monovalent hydrocarbon group of 1 to 10 carbon atoms, X is a monovalent hydrocarbon group of 1 to 6 carbon atoms, a, b, p and q are positive numbers satisfying the range: 0.50≦a≦1.80, 0≦b≦1.00, 0<p≦1.50, 0≦q≦0.50, 0.50≦a+b≦1.80, 0<p+q≦1.50, and 0.50<a+b+p+q≦2.0, with a radical polymerizable vinyl monomer and effecting emulsion polymerization.