CH3OK催化乙氧基化反应合成异十三醇聚氧乙烯醚-7的研究

Investigation on CH3OK catalyzed ethoxylation to synthesize polyoxyethylene (7) isotridecyl ether

摘要:

以异十三醇和环氧乙烷为原料，经CH3OK催化乙氧基化反应合成异十三醇聚氧乙烯醚-7(简称E1307)，以解决目前宽分布产品的低温透明度和润湿力不敌窄分布产品的问题。并考察了碱催化乙氧基化反应参数对E1307品质，特别是对最低透明温度和润湿力的影响，结果表明，原料水分残留量和催化剂用量对产品品质的影响较大。异十三醇在100 oC下抽真空除水分1 h，用异十三醇质量0.3%的CH3OK催化剂在0.3 MPa和120 oC下进行乙氧基化反应，得到E1307的最低透明温度为10 oC，润湿力为163 s，品质好于目前市售窄分布产品。

Abstract:

Isotridecanol polyoxyethylene-7 ether (E1307) was synthesized by CH3OK catalyzed ethoxylation of iso-tridecanol and ethylene oxide in order to improve the qualities of the products with a broad polydispersity to replace the product with a narrow polydispersity. The effect of the reaction parameters on the product quality, especially the lowest transparent temperature and wetting power, were well investigated, and the experimental results showed that the moisture and the catalyst dosage were the two main influence factors. Moisture was removed as far as possible from isotridecanol under vacuum at 100 oC for 1 h, and then the ethoxylation was catalyzed by CH3OK (0.3%wt) at 120 oC and 0.3 MPa EO, and the product of E1307 was obtained with the lowest transparent temperature of 10 oC and wetting power of 163 s which is superior to the commercial product with a narrow polydispersity.