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(duì)其酰化原理分析,選用乙酰氯作酰化劑、二氯甲烷作酰化溶劑,測(cè)定含環(huán)氧基聚酯的羥值。
