Synthesis and Performance of Small Water-reducing Agent
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Abstract: The reaction of esterification from methoxy polyethylene glycol (MPEG) and maleic anhydride were studied in this article, and the product can be used as small water-reducing agent .The effects of time, temperature, molecular weight of MPEG and the feed ratio on the esterification degree of methoxy polyethylene glycol and maleic anhydride were investigated in details, and then the optimum reaction condition was determined.
The structure of product was characterized by IR, the reaction conditions such as time, temperature, weight of MPEG, the feed ratio etc were analyzed by orthogonal method.The activation energy was obtained. Meanwhile the application of product as water-reducing agent was explored, and get a good result .
Keywords: Esterification; Small water-reducing agent; Methoxy polyethylene glycol; Maleic anhydride