私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

當前位置:> 首頁 > 論文著作 > 正文
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
關鍵字:Liquid crystalline epoxy resin, Synthesis, Esterification, Cure behavior
論文來源:期刊
具體來源:POLYMER BULLETIN卷: 67 期: 1 頁: 57-66
發表時間:2011年
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).
主站蜘蛛池模板: 新民市| 高要市| 仁化县| 库伦旗| 南部县| 海林市| 潼南县| 息烽县| 金塔县| 大余县| 宿州市| 读书| 稷山县| 怀化市| 丹棱县| 札达县| 台中县| 乳山市| 上高县| 沙坪坝区| 修文县| 沾益县| 普格县| 托克逊县| 新平| 乌兰浩特市| 巨野县| 谷城县| 合肥市| 和龙市| 涿州市| 盐亭县| 庐江县| 静海县| 萨迦县| 志丹县| 多伦县| 龙井市| 西乡县| 高青县| 哈密市|