AQUEOUS DISPERSIVE ADHESIVE COMPOSITION Russian patent published in 2000 - IPC

FIELD: chemical industry. SUBSTANCE: described is aqueous dispersive adhesive composition for gluing paper, polywood, wood, laminated paper and PVC plastic material with wood and paper substrate. Said composition comprises 50% aqueous dispersion of acrylic copolymer, thickening agent, and viscosity stabilizer. Aqueous dispersion of acrylic copolymer is 50% aqueous dispersion of copolymer of butyl acrylate, styrene and methacrylic acid at monomer ratio of 60:33:7, respectively. Viscosity stabilizer is formalin, thickener is 7% aqueous solution of polyacrylamide, and antifreeze is carbamide. Ratios of ingredients are as follows, wt % 50% aqueous dispersion of copolymer of butyl acrylate, styrene and methacrylic acid, 89.0-92.7; 7% aqueous solution of polyacrylamide, 6.0-8.6; carbamide, 1-3; formalin, 0.1-1.0. EFFECT: increased adhesion strength, frost resistance, shorter drying time, greater gluing power, replacement of casein by other thickener, namely polyacryl amide, and stability of properties of adhesive during storage. 1 tbl