belarus for aminoplasts, its use in flaechenverleimungen of wood-based materials and procedures to flaechenverleimen of wood-based materials.

摘要

Hardener for aminoplast resins contains, by wt. w.r.t. the total wt. of the hardener, (a) 30-92.5 (55-90) esp. 58-79% amino gp.-contg. cpd., (b) 5-35 (15-32)% ammonium salt of an inorganic or organic acid, (c) 2-30 (5-15) esp. 5-8% guanimine and (d) 0.5-10 (0.9-6) esp. 1.1-2.4% mono- or polybasic inorganic or organic acid having pKa-value below 2, provided that the sum of the constituents (a)-(d) is 100 wt.%.