Aqueous coating composition
AssigneeSK Kaken Co., Ltd.
InventorsSei-ichi Onoue, Shigeto Kamimura
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Abstract
The invention provides an aqueous coating composition, which can simplify storage of an anti-staining agent and is excellent not only in coating stability upon mixing the anti-staining agent with an emulsion resin coating and but also in anti-staining properties. Disclosed is an aqueous coating composition comprising, as essential components, a synthetic resin emulsion (A) having a pH value of 4.0 to 10.0 and a neutral silica sol (B) having a particle diameter of 1 to 200 nm and a pH value of 5.0 to less than 8.5, wherein the neutral silica sol (B) component is contained in an amount of 0.1 to 50 parts by weight in terms of solid content relative to 100 parts by weight of the solid content of the synthetic resin emulsion (A).
Claims10
An aqueous coating composition comprising, as essential components, a synthetic resin emulsion (A) having a pH value of 4.0 to 10.0 and a neutral silica sol (B) having a particle diameter of 1 to 200 nm and a pH value of 5.0 to 7.8, wherein the neutral silica sol (B) component is contained in an amount of 0.1 to 50 parts by weight in terms of solid content relative to 100 parts by weight of the solid content of the synthetic resin emulsion (A), and the electrical conductivity of the neutral silica sol (B) is 1 mS/cm or less wherein the neutral silica sol (B) includes particles made of a compound which is formed by hydrolysis condensation of silicate, is rigid, and has silanol groups (Si-OH) on the surfaces of the particles and the neutral silica sol has been subjected to hydrophobation treatment.
Dependencies are inferred from the claim text.