Zhang Pei-hon
2013
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Shandong Chemical Industry
Abstract
Dibutyl fumarate, an important plasticizing agent, can copolymerize with a variety of monomers to form new polymer materials,and can be also used as organic solvent and organic synthetic intermediate. The optimal condition of synthesizing dibutyl fumarate from fumaric acid and n-butanol by using concentrated sulfuric acid as catalyst. In addition,the catalystic effect was compared with other catalysts such as : p-toluenesulfonic acid,phosphotungstic acid and sodium bisulfate. The optimal reaction condition were obtained by using orthogonal experimental method: fumaric acid,n-butanol, concentrated sulfuric acid molar ratio is 1 : 15: 7. 5,reaction time is 1. 5 hours,the yield could reach 90. 5%. The physical constants and IR data of the product were in consistence with reports of literature.