Benzoic Acid → HCID 21285052, compound

Participants

Reaction Conditions

Reaction Steps

The process for Example 8 was initiated by charging 593.5 g phenol (6.31 moles), 1.2 g of benzoic acid (0.2% of phenol) 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 68.7 g of 50.1% aqueous formaldehyde (60% of total charge) was added in over 30 minutes. The reaction mixture was atmospherically distilled to 123° C., and then maintaining the 123° C. temperature for 2 hours before reducing the reaction mixture temperature to 80° C. 45.8 g of 50.1% aqueous formaldehyde (40% of total charge) was added over about 15 minutes to the reaction mixture, followed by atmospherically distilling the reaction mixture to 123° C., maintaining the temperature at 123° C. for 1.5 hours, and then increasing the temperature over 50 minutes to 165° C. and 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. before heating the reaction mixture to 175° C. under full vacuum. Further, the process is concluded by removing the vacuum distillate (395.0 g) and discharging the product (279.2 g) from the reaction vessel.

Provenance & Evidence