Method for synthesizing fatty alcohol polyether with wide molecular weight distribution by modifying double metal cyanide

• Main Authors: JIN YIFENG, YANG JIAWEI, WANG-MAJISHI, WANG WEISONG, JIA CHAOWEI
• Format: Patent
• Language: Chinese; English
• Published: 04.07.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention relates to the field of fine chemical engineering for synthesizing polyether nonionic surfactants, in particular to a method for synthesizing fatty alcohol polyether with wide molecular weight distribution by modifying double metal cyanide. Compared with fatty alcohol random polyether prepared by directly using FeCo DMC under the same reaction condition, the fatty alcohol random polyether prepared by using the alkyl amide ligand modified FeCo DMC as the catalyst has the advantages that the molecular weight distribution is wider, and the coefficient can break through 1.1. FeCo DMC is low in cost and suitable for large-scale use. 本发明涉及合成聚醚类非离子表面活性剂的精细化工领域，尤其涉及一种改性双金属氰化物合成宽分子量分布脂肪醇聚醚的方法。与在相同反应条件下直接用FeCo DMC制备的脂肪醇无规聚醚相比，采用烷基酰胺类配体改性的FeCo DMC作催化剂制备的脂肪醇无规聚醚分子量分布更宽，系数能突破1.1。FeCo DMC成本低且适合规模化使用。