Formaldehyde → Melamine formaldehyde

Participants

Reaction Conditions

Reaction Steps

In the meantime, 10 parts of melamine, 25 parts of a 37% formaldehyde solution, 65 parts of water and a small quantity of sodium hydroxide were mixed and heated to 60° C. This solution became transparent in 15 minutes and a melamine-formalin precondensate was obtained. This precondensate was added to the emulsified solution and stirred continuously for 3 hours while maintaining the liquid temperature at 60° C. to complete the microcapsulation. The obtained microcapsules had an average particle size of 5 to 6 μm and the solids content of the microcapsule dispersion was about 45%.

Provenance & Evidence