METHOD FOR PRODUCTION OF AQUEOUS-DISPERSION COMPOSITION FOR COATINGS Russian patent published in 1995 - IPC

FIELD: anticorrosive coatings. SUBSTANCE: 68-72 alcohol solution of carboxyl-containing oligomer having acid number 105-125 mg KOH/g is mixed with aliphatic tertiary monoamine and imidazole. Quantities of said ingredients are 7.5-9.2, 0.5-0.7 and 2.5-3.5 mass parts respectively, mass ratio of monoamine and imidazole being 1:5. Thus prepared product is added into aqueous dispersion of carboxylate latex of butadiene styrene rubber, quantity of said dispersion being 73.9-78.7 mass parts. Then direct aqueous emulsion of epoxy oligomer having epoxy number 20-22 is added into thus obtained compound. Mentioned above emulsion contains asymmetrical block copolymer of ethylene oxide and propylene oxide. Quantities of said epoxy oligomer having epoxy number 20-22, asymmetrical block copolymer and water are 70.9-73.2, 0.7-2,4 and 24.4-28.4 mass parts respectively. Mass ratio of compound I and compound II is (97.5-98.5):(1.5-2.5) respectively. EFFECT: improves efficiency of method. 2 tbl