c and cooled to a temperature of 170 u00b0 c and reacted for 80 minutes 4800 s post maximum exotherm a sample was taken and analysis revealed it to have an eew of 3675 and a 17 400 weight average molecular weight the resultant product was then quenched to a 40 by weight non volatiles level with 200 lbs 90 72 kg of the n butyl ether of ethylene glycol eb 278 lbs 126 1 kg of cyclohexanone 278 lbs 126 1 kg of n butanol 253 lbs 114 76 kg of xylene and 278 lbs 126 1 kg of an aromatic solvent having a flash point of 43 u00b0 c and a boiling range of 155 u00b0 c to 173 u00b0 c to a 300 gallon 1135 6 l kettle equipped with a means of stirring and temperature control was added 596 lbs 269 89 kg 3 2 lb equiv of a diglycidyl ether of bisphenol a having an epoxide equivalent weight eew of 186 25 lbs 11 34 kg of xylene 2 lbs 0 91 kg of ethyltriphenylphosphonium phosphate 30 solids in methanol 327 lbs 148 33 kg 2 87 lb equiv of bisphenol a and 78 lbs 35 38 kg of the n butyl ether of ethylene glycol the contents were heated with stirring to a temperature of 160 u00b0 c over 74 minutes 4440 s the contents were then allowed to exotherm to a temperature of 206 u00b0 c and cooled to a temperature of 175 u00b0 c and reacted for 69 minutes 4140 s post maximum exotherm a sample was taken and analysis revealed it to have an eew of 3583 and a 15 700 weight average molecular weight the resultant product was.