摘要
利用间接法以巯基乙醇和环氧氯丙烷 (ECH)为原料通过 3步反应得到 2 ,3 二 (2 ,3 环氧丙硫乙硫基 )丙基·2 ,3 环氧丙基硫醚型环氧树脂 (TGEBES) ,其折射率和环氧值分别达 1.5 85 0和 0 .5 3;在没有任何催化剂的条件下 ,按以三元硫醇 (BES)和ECH物质的量比为 1∶3.6、在温度为 0～ 5℃下反应 3～ 4h ,环氧化反应的产率达到84 .5 %。并利用红外光谱和核磁共振对含硫高折射率环氧树脂的结构进行了表征 ;利用高效液相色谱对TGEBES和BES的纯度进行了测定 ,结果表明TGEBES和BES纯度分别达 96 %和 97.7%以上。
The 2,3-di(2,3-epoxypropyl thioethylthio)propyl 2,3-ep ox ypropyl thioether(TGEBES) was synthesized from epichlorohydrin(ECH) and 2,3-dim ercaproethylthio-propanethiol(BES) which was synthesized from ECH, thiolethanol and thiourea.The epoxide number and refractive index of TGEBES were respectively 0.53 and 1 .5850. The yield of epoxidation reaction was 84.5% on the condition that the mola r ratio of ECH to BES was 3.6∶1 and reacted for 3～4 hours at 0～4 ℃ without an y catalyst. And the structures of all compounds were characterized by FTIR and 1H-NMR. High Performance Liquid Chromatography(HPLC) showed that the contents of BES and TGEBES were respectively over 97.7% and 96%.
出处
《粘接》
CAS
2004年第5期1-4,共4页
Adhesion
基金
湖北省教育厅重大科技攻关项目 (2 0 0 0Z2 40 0 2 )
