METHOD FOR PRODUCTION OF MODIFIED UREA-MELAMINE-FORMALDEHYDE RESIN Russian patent published in 2003 - IPC

FIELD: polymer production. SUBSTANCE: urea-melamine-formaldehyde resin applicable for manufacturing wood chipboards, composites, and as glues for plywood is prepared by condensation of urea-formaldehyde concentrate, obtained by oxidative dehydration of methanol on iron-molybdenum catalyst in tubular reactor followed by chemisorption of formaldehyde-containing gas with urea solution, with urea and melamine in presence of modifier, which is still residue of monoethanolamine purification in ammonia production. EFFECT: optimized and intensified synthesis and improved performance characteristics of resin. 2 cl, 1 tbl, 2 ex