Binder compositions for granular substance-containing paints

Abstract

Abstract A binder composition for paints containing granular substances comprises an aqueous dispersion of a resin whose glass transition temperature is from 20 DEG to 50 DEG C., and a solvent whose b.p. is from 120 DEG to 200 DEG C., the proportion of solvent being from 20 to 150 parts per 100 parts by weight of resin and at least sufficient to enable the composition to form a continuous film at a temperature of from 0 DEG to -2 DEG C. Suitable resins include copolymers of (a) styrene, a -methyl styrene, vinyl toluene or a methacrylate ester of an alcohol having less than 3 carbon atoms; with (b) an acrylate ester of an alcohol having at least 2 carbon atoms or a methacrylate ester of an alcohol having at least 4 carbon atoms and, optionally, (c) vinyl acetate, butadiene or vinyl chloride. Solvents specified are nonyl acetate, methyl or ethyl acetoacetate, ethylene glycol mono-ethyl or mono-butyl ether, the acetate of ethylene glycol mono-methyl or mono-ethyl ether, xylene, chlorobenzene, dichlorobenzene and butylbenzene. The composition may contain a small proportion of a water-soluble resin, e.g. methyl cellulose, carboxymethyl cellylose, polyvinyl alcohol, casein, polyacrylamide, polysodium acrylate, hydroxyethyl cellulose or polyethylene glycol; it may also contain a plasticizer (unspecified). In examples, the following granular substances are incorporated in the compositions: marble, yellow or black marble macadam, fine gravel and serpentine.

Inventors

• 👤 Soichi Muroi
• 👤 Shinzo Takai

Bibliographic Details