Formaldehyde → HCID 21285052, compound

Participants

Reaction Conditions

Reaction Steps

The process for Example 4 was initiated by charging 593.5 g phenol (6.31 moles) and 75.2 g melamine (0.60 moles) into a reaction vessel to form a reaction mixture. The reaction mixture was heated to 80° C., and 53.14 g of 50.15% aqueous formaldehyde (60% of total charge) was added over 15 minutes. The reaction mixture was atmospherically distilled to 133° C., then maintained at 133° C. temperature for 2 hours, followed by reducing the reaction mixture temperature to 80° C. 35.45 g of 50.15% aqueous formaldehyde (40% of total charge) was added in about 20 minutes to the reaction mixture, then atmospherically distilling the reaction mixture to 133° C., maintained at 133° C. for 1.3 hours, and then increasing the temperature over 60 minutes to 165° C. while continuing to distill atmospherically. Next, the reaction mixture was under a gradually increasing vacuum over 2 hours to full vacuum of at least 27 inches while maintaining a temperature of 163°-165° C., and then heating the reaction mixture to 175° C. under full vacuum. Further, the process is concluded by removing the vacuum distillate (439.7 g) and discharging the product (236.7 g) from the reaction vessel. The condensate exhibited a solubility of 33% and higher solids dissolved in a solvent for 120 hours or greater.

Provenance & Evidence