Sun Xiao-yan
2010
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Journal
Synthetic Materials Aging and Application
Abstract
Dibenzoylmethane(DBM) is an important β-diketone structure of thermoplastics light stabilizer,heat stabilizer,non-toxic,tasteless,widely used in polyvinyl chloride(PVC) and acrylonitrile-butadiene-styrene(ABS) resin,plastic processing products as new auxiliary stabilizer.The results showed that when n(methyl benzoate):n(acetophenone)=4:1,the amount of catalyst for 10ml,the reaction temperature is 140℃,the average yield of more than 85% can be achieved,using the methyl benzoate and acetophenone as raw materials and mixture of methanol and sodium methoxide as a catalyst,and the melting point in the between 77~78 ℃.Tests carried out on methanol recovery,reduced costs.