Formaldehyde → Melamine formaldehyde

Participants

Reaction Steps

Separately, 6 g of melamine, 11 g of a 37 wt% of formaldehyde aqueous solution, and 83 g of water were heated to 60° C. under stirring, and, after 30 minutes, a transparent melamine-formaldehyde incipient condensate solution was obtained. This aqueous solution had a pH of 6 to 8. The incipient condensate solution obtained as described above was added to the above-described emulsion and mixed. The pH of the solution was adjusted to 6.0 by adding a 20 wt% acetic acid solution under stirring. Then, the solution temperature was raised to 65° C., and the stirring was continued for 30 minutes to form microcapsules.

Provenance & Evidence