Study on new synthesis of metaldehyde;
四聚乙醛合成新工艺的研究
The yield of metaldehyde could reach 8%~15%.
介绍了用盐酸复合催化剂由乙醛合成四聚乙醛的生产工艺,该工艺反应在-15～5℃下进行,温度升降平稳,易于控制,四聚乙醛得率8%～15%。
Metaldehyde(Ⅰ)is obtained in relatively high yields(15%～20%) by polymerizing with acetaldehyde(Ⅱ) in the presence of compound hydrochloric acid catalyst and under temperature between -15?℃ and 15?℃.
本研究使用盐酸复合催化剂合成四聚乙醛 (Ⅰ )的方法。
Polymerization of acetaldehyde to paraldehyde;
乙醛合成三聚乙醛反应规律的研究
The method to improve the thermal stability of metaldehyde product and the recovery of acetaldehyde from the main by-product paraldehyde were discussed.
讨论了主要副产物三聚乙醛解聚回收乙醛的生产工艺及四聚乙醛产品热稳定性处理方法。
Diisobutyl acetal was synthesized by the condensation of paraldehyde and iso-butyl al- cohol.
以三聚乙醛和异丁醇为原料，合成了二异丁基乙缩醛。