n.醋化器
The hydroxyl value of epoxy-containing polyester was determined by analyzing acetification principle and using acetyl chloride as acetifier and methylene chloride as solvent. 通過對其?;矸治?選用乙酰氯作?;瘎⒍燃淄樽黪;軇?測定含環(huán)氧基聚酯的羥值。