24 августа, 2015 
Malyar For starting experiments in MF resins, the following formulations are suggested.
A. MF Formulation for Exterior Particleboard
In a reaction vessel charge at 25°C, 44.4 parts by mass of water, add 30% NaOH solution to pH 11.2 to 12.0, followed by 15.5 parts of 91% paraformaldehyde prills, 34.4 parts of melamine powder, 2.8 parts of caprolactam, and 2.5 parts of N, N0-dimethylformamide while maintaining the temperature at 25°C; heat in ± 40 min to 92 to 95°C. When the temperature reaches 80°C, adjust the pH with 30% NaOH solution, if necessary, to pH 9.9. At 93°C, cool to 90°C and maintain the temperature there. Adjust pH to 9.55 to 9.65 with formic acid. Hold the pH at this value while checking, adjusting, and recording the pH value every ± 10 min. Check for the turbidity point at 10-min intervals until the turbidity point is reached. At this time bring pH up to 9.95 to 10.05. Check, adjust, and record the pH every 10 min. Start distilling water under vacuum to a solid of ± 53 to 55%. Check the water tolerance at 10-min intervals until it is 170 to 180%. Then apply full vacuum and cool the resin to 30 to 35°C.
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