Patent ID: 6127511
Filing Date: 2000-10-03
Classification: C08G

Abstract:
A preparation process of phenol aralkyl resin from a phenol compound and an aralkyl compound in manufacturing equipment having a wall surface contacting a reaction mass and an outside wall surface, said process comprising controlling the temperature of the reaction mass in the range of 70 to 240.degree. C., simultaneously controlling the temperature of a vapor phase portion and a vapor-liquid interface portion of the manufacturing equipment so as to keep the wall surface of the vapor phase portion and vapor-liquid interface portion in a wet state and controlling the outside wall surface temperature of the vapor phase portion and the vapor-liquid interface portion to a range which is 5 to 90.degree. C. lower than the temperature of the reaction mass wherein the ratio of liquid depth of a heating medium in a jacket to the liquid depth of the reaction mass is in the range of 0.3 to 1.