반응 #1951011

반응 방정식

formaline

phenol

sulfuric acid

meta-xylene

→

xylene-formaldehyde

반응 조건

후처리

1. 1
   기타A 2L-separable flask equipped with a thermometer
2. 2
   온도reflux condenser and stirrer
3. 3
   기타were reacted at 84-88° C. for 4 hours
4. 4
   기타After termination of the reaction
5. 5
   기타to be separated into the resin phase and aqueous sulfuric acid phase
6. 6
   세척The resin phase was washed three times with water

실험 절차

A 2L-separable flask equipped with a thermometer, reflux condenser and stirrer was charged with 240 parts of 50% formaline, 55 parts of phenol, 101 parts of 98% industrial sulfuric acid and 212 parts of meta-xylene, which were reacted at 84-88° C. for 4 hours. After termination of the reaction, the reaction mixture was allowed to stand to be separated into the resin phase and aqueous sulfuric acid phase. The resin phase was washed three times with water, stripped of unreacted meta-xylene for 20 minutes under the conditions of 20-30 mmHg/120-130° C., to provide a xylene-formaldehyde resin having a viscosity of 1050 centipoise (25° C.)

출처