3,5-Dimethylphenol → Xylenol p-tert-octylphenol formaldehyde

Beteiligte Stoffe

Reaktionsschritte

Into a four-necked flask provided with a reflux condenser and a thermometer are charged p-tert-octylphenol (133.9 g, 0.65 mol), toluene (206 g), 88% paraform (23.6 g, 0.7 mol) and a 10 N-NaOH aqueous solution (8 ml). The mixture is reacted at 70° C. for 3 hours, and thereto is added 3,5-xylenol (42.7 g, 0.35 mol). The mixture is further reacted for 3 hours. After the reaction, water and toluene are simultaneously distilled off at 150° C. under reduced pressure (reduced degree: 30 mmHg or less) to give a solid xylenol/p-tert-octylphenol/formaldehyde co-polycondensate resin (Resin V).

Herkunft & Nachweise