Formic Acid → Melamine formaldehyde

Participants

Reaction Steps

126 g (1 mole) of melamine were methylolated in the presence of 270 g (9 moles) of formaldehyde at a pH of 8.5 and at from 40° to 70°C. The resulting adduct was brought to a pH of 4 with formic acid and etherified at 60° C. with 900 g of methanol in the course of 15 minutes. After neutralization with sodium hydroxide solution, the reactionsolution was freed from the unconverted formaldehyde and the excess methanol by evaporation (distillation).

Provenance & Evidence