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3-氯-2-羟丙基三甲基氯化铵可作为造纸工业中的重要助剂,是有用的活性中间体。以无水乙醇为介质,采用环氧氯丙烷(EPIC)、36%的盐酸、三乙胺替代三甲胺为原料,在乙醇中水法合成了3-氯- 2-羟丙基三乙基氯化铵(CTA),并用FT-IR对产品进行了表征。研究结果表明,CTA的收率达97 6%,产品纯度为96%,熔点为168-170℃;CTA的吸水率在6 h时已基本达到饱和;CTA的最佳合成工艺条件为总反应时间5 h,反应温度为20℃,n(EPIC):n(三乙胺豁酸盐)的比值为0.95∶1,反应体系的pH值为7～8。
3-Chloro-2-hydroxypropyltrimethylammonium chloride can be used as an important auxiliary in the paper industry and is a useful active intermediate. Chloro-2-hydroxypropyl triethyl chloride was synthesized by aqueous method from ethanol with anhydrous ethanol as the raw material, epichlorohydrin (EPIC), 36% hydrochloric acid and triethylamine instead of trimethylamine (CTA), and the product was characterized by FT-IR. The results showed that the yield of CTA reached 97.6%, the purity of product was 96%, the melting point was 168-170 ℃. The water absorption of CTA reached saturation at 6 h. The optimum synthesis conditions of CTA were total reaction time 5 h, the reaction temperature was 20 ℃, the ratio of n (EPIC): n (triethylamine acetate) was 0.95:1, and the pH of the reaction system was 7-8.