Song Yin-xia
2009
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Journal
Journal of Wuhan Institute of Technology
Abstract
Mono polyethylene glycol maleate was synthesized by esterification of maleic anhydride and Methoxypolyethylene glycols under the existence of different catalyst and use toluene as solvent.It was found that if 3%—4% toluene-p-sulfonic acid as catalyst has used,mol ratio of acid to Methoxypolyethylene glycols was(1—1.1)∶1,and the reaction temperature was 100—110 ℃,the highest productivity can be obtained in the shortest time.By infrared spectrum analysis of the product,that the mono polyethylene glgcol malenate was successfully synthesized.