Song Wan-wen
2007
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Journal
Journal of Shenyang Institute of Chemical Technology
Abstract
In this paper,Bis(p-hydroxybenzoic acid)butanediolate which is a kind of mesogenic unit was synthesized by melting transesterification using methyl-p-hydroxybenzoate,1,4-butanediol,and Tetra-n-butyl titanate as catalyst.The products were investigated by IR,DSC and POM techniques.At the same time,the effects of the type and quantity of the catalyst to be added,the temperature and the adding amount of methyl-p-hydroxybenzoate on the yeild of the product were studied.Consequently,the best reaction conditions were obtained: 160 ℃,methyl-p-hydroxybenzoate 0.101 9 mol,1,4-butanediol 0.049 7 mol,Tetra-n-butyl titanate 0.007 3 mol,and yield is 64.85 %.