Wang Bing
2007
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Journal
Journal of Northwest Normal University
Abstract
Pentaerythritol tetramethylacrylate is synthesized by direct esterification,and the effects on the reaction of esterification are studied.The optimum reaction conditions are discussed: the molar of pentaerythritol to methacrylic acid is 1∶8,the percent of p-toluene sulfonic acid as catalyst,dicyclohexylcarbodimide as dehydrant,hydroquinone as antipolymerizer are 6.0%,1.0%,2.0%,respectively(according to the mass of pentaerythritol and methacrylic acid),and the yield of reaction can reached 80% when the mixture is stirred at 80~90℃ for 8 h.The water-carrying reagent of raditional esterification such as benzene or methylbenzene is discarded.This synthetic methodology is little toxicity,little pollution and environmental friendly.