A new and efficient synthetic method of a liquid crystalline epoxy resin with biphenol and aromatic ester group

作者：Liu Yin Ling; Cai Zhi Qi^*; Wen Xiufang; Pi Pihui; Zheng Dafeng; Cheng Jiang; Yang Zhuoru

来源：Polymer Bulletin, 2011, 67(1): 57-66.

DOI：10.1007/s00289-010-0366-y

• Liquid crystalline epoxy resin
• Synthesis
• Esterification
• Cure behavior

This article describes a high efficient and economical method to synthesize a liquid crystalline epoxy resin (LCER) containing biphenol and aromatic ester group, 3,3',5,5'-tetramethylbiphenyl-4,4'-diyl bis(4-(oxiran-2-ylmethoxy) benzoate) (4). First, 3,3',5,5'-tetramethylbiphenyl-4,4'-diyl bis(4-hydroxybenzoate) (3) was prepared by direct esterification of 3,3',5,5'-tetramethylbiphenyl-4,4'-diol (2) with p-hydroxybenzoic acid (1) in the presence of a certain amount of p-toluene sulfonic acid (p-TSA) as catalyst. And then (4) was synthesized by the reaction of (3) with epichlorohydrin. The chemical structure, melting range, and liquid crystalline phase transition behavior of (4) were characterized by FT-IR, (1)H-NMR, (13)C-NMR, mass spectroscopy, differential scanning calorimetry (DSC), and polarized optical microscopy (POM).

• 出版日期2011-6
• 单位华南理工大学