COMPOSITION FOR COATING AND METHOD FOR ITS PRODUCTION Russian patent published in 1998 - IPC

FIELD: production of paint and varnish materials, particularly, aqueous dispersion composition for priming, dyeing and spackling surfaces of concrete, wood and metal. SUBSTANCE: 3.0-30.0 mass % of latex of synthetic polymer are mixed with water till 15.0-50.0 % concentration is obtained. By mixing 0.05-2.0 mass % of alkaline agent are added, the process is followed by mixing with pigment and filler, their quantities being 0.01-35.0 mass % and 0.1-70.0 mass % respectively. Then alkaline agent is additionally added till viscosity of composition is 0.2-2 × 10³ P s, quantity of agent being 0.05-2.0 mass %. Proposed composition may additionally comprise stiffener, antifreezing agent and antiseptic agent, their quantities are 0.1-2.0 mass %, 0.01-10.0 mass % and 0.1-5.0 mass %, respectively. Latex of synthetic polymer is chosen of group comprising copolymer of butadiene, methyl methacrylate and methacrylic acid, copolymer of butadiene, styrene and methacrylic acid, copolymer of butyl acrylate, methyl methacrylate and methacrylic acid, copolymer of butyl acrylate, styrene and methacrylic acid. EFFECT: improved quality.