聚酯醚型消泡剂的一步法合成及消泡性能研究

Synthesis of polyester-ether defoamer by direct alkoxylation and study on its defoaming property

以月桂酸甲酯、环氧乙烷（EO）、环氧丙烷（PO）为原料，MCT-09为催化剂，一步法合成了脂肪酸甲酯无规聚醚（FMERP）聚酯醚型消泡剂。反应条件优化为：反应温度195-200℃，压强0．3-0．4MPa，搅拌速率600r／min,催化剂用量6．05g Cat．／tool脂肪酸甲酯。通过红外光谱（IR）、核磁共振谱图（^1HNMR^13CNMR）对产品进行了表征，结果表明所合成的产品为目标产物。产品与市场聚醚消泡剂L-61进行了比较，表明FMERP的消泡和抑泡性能比L-61好，消泡效率和抑泡效率最高分别达到72．2％和61．1％。

Fatty methyl ester random polyether （FMERP） was directly synthesized using methyl laurate, ethylene oxide （EO） and propylene oxide （PO） as raw materials and MCT-09 as the catalyst. The optimized reaction conditions were： a reaction temperatree of 195 - 200 ℃ ,a reaction pressure of 0.3 - 0.4 MPa, and a stirring rate of 600 r/min, with the amount of catalyst equating to 6.05 g of cat./mol of fatty acid methyl ester.The structure of the target product was characterized by IR,^1HNMR and ^13CNMR spectrometries. The defoaming abilities of FMERP were determined and compared with the commodity defoamer L-61. The restdts showed that FMERP had better defoaming abilities than L- 61, and the best defoarning efficiency and antifoam properties were 72.2% and 61.1% ,respectively.