Abstract: A resin composition suitable as water-based paints which comprises 100 parts by weight of an emulsion of a polymer obtained by copolymerizing a silyl group-containing vinyl monomer with other vinyl monomers, 1 to 70 parts by weight of a silicon compound and/or its partial hydrolysis condensation product and/or a silicon compound having at least one amino group and/or its derivative and at least one hydrolyzable silyl group in one molecule, and 0 to 20 parts by weight of a curing catalyst. When the resin composition is coated onto materials to be coated, coating films having an excellent stain resistance in addition to excellent weatherability and durability are formed on the sufaces of the materials to be coated.

Abstract: A room temperature curable composition suitable as top coat and providing coating films having good properties such as surface appearance, gloss, stain resistance, weatherability and adhesion and a small contact angle with water, which comprises (A) an acrylic copolymer having a specific reactive silicon-containing group such as alkoxysilyl group, (B) a specific hydrolyzable silicon compound and/or its partial hydrolysis condensation product, (C) a specific curing catalyst such as an organic carboxylic acid, a combination of an organic carboxylic acid with an organic amine, or an organometallic compound, and (D) an adhesion improving agent such as a silane coupling agent or its reaction product with an epoxy compound.