Formaldehyde → HCID 21285052, compound

Participants

Reaction Conditions

Reaction Steps

The process for Example 3 is initiated by charging 221.5 g phenol (2.35 moles), 31.9 g melamine (0.25 moles), 36.6 g of 50% formaldehyde (0.61 moles) into a reaction vessel to form a reaction mixture, heating the reaction mixture under distillation mode until distillation starts around 115-120° C., gradually increasing the temperature up to about 170° C. while water and phenol are removed atmospherically. Then, applying a vacuum gradually until most of non-reacted phenol is removed, and water sparging the reaction mixture at about 180° C. to reduce the phenol level to <1% in the final product. The process is concluded by removing phenol (172 g) distillate and discharging the product (87.3 g) from the reaction vessel. The recovered product exhibited a solubility of almost any concentration such as from 33 wt. % solids to 70 wt. % solids in common solvents such as MEK. Such solutions remained dissolved in a MEK for greater than 500 hours or indefinitely without precipitation.

Provenance & Evidence