环氧氯丙烷液化二溴新戊二醇的研究

Research of Dibromoneopentylglycol Liquified with Epichlorohydrin

研究了以四氯化锡为催化剂、环氧氯丙烷液化二溴新戊二醇的方法,讨论了催化剂用量、环氧氯丙烷与二溴新戊二醇摩尔配比对液化效果影响,用GPC、DSC等手段对液化产物进行了表征,介绍了液化反应机理。结果表明,当环氧氯丙烷与二溴新戊二醇摩尔配比为4∶1、四氯化锡质量分数为0.5%时,液化产物凝固点为-36℃,平均相对分子质量为647.5,羟值为173mgKOH/g。液化二溴新戊二醇既保留了二溴新戊二醇阻燃效果和反应性,又便于聚氨酯生产使用。

Using the stannic chloride （SnCl4） as catalyst, the way of dibromoneopentylglycol （DBNPG） liquefaction with epichlorohydirn was researched. The effect of catalyst content, ratio of raw materials on the products composition and properties were discussed with the help of GPC and DSC. Also, the mechanism of epichlorohydirn polymerization was investigated. It was showed that the DBNPG had either the flame retardant or the using easily when the molar ratio of ECH to DBNPG was 4：1 ,the amount of SnCl4 was 0.5% , the freezing point of the product was -36℃, the molecular was 647.5, OH value was 173 mgKOH/g.