METHOD OF PRODUCING MODIFIED AMINOFORMALDEHYDE RESINS Russian patent published in 1995 - IPC

FIELD: resins. SUBSTANCE: method involves mixing amine and formaldehyde in the presence of monobutylbenzenesulfamide taken at concentration 0.01-0.2 mole per 1 mole amine at final molar ratio of amine and formaldehyde 1: (1.1-1.65). Prepared resin shows modulus of elasticity 19000-19600 kgf/cm², relative deformation 1.4-1.88% mass part of dry matter 68 ± 2% mass part of free formaldehyde 0.3-0.4% Resins were used for manufacture of veneer, furniture, wood-chip plates, coatings, lamellar plastics and glass plastics. EFFECT: improved method of resin producing.