Abstract: Glyceryl monostearate was synthesized by a method of group protection. The optimum conditions for the synthesis were found through orthogonal experiments as：petroleum ether is 120 (mL/molGT)，the molar ratio of glycerol∶ acetone ∶stearic acid is 1∶1.5∶0.7，the mass of catalyst is 5% of glycerol. The elemental analysis and IR spectrogram of the product were identical with the target product. Then the product was mixed with high-level fatty alcohol so as to develop a water-based emulsion non-silicon defoamer. A comparative study on the technical specifications showed that this defoamer is suitable for papermaking and coating process.

摘要： 以基团保护法合成了硬脂酸单甘油酯；通过正交实验研究获得了优化的合成条件：带水剂用量为120( mL/molGT)，催化剂用量为5%，甘油与丙酮和硬脂酸的摩尔比为1∶1.5∶0.7。产物经IR和元素分析表征，确定产物为目的产物。合成的产物与混合高级脂肪醇复配研制出水基乳液非硅消泡剂，通过测定其技术指标及与国内外产品进行比较发现自制消泡剂适用于抄纸和涂布工序中，且性能优异。