二巯基甲基三硫杂十一烷硫醇组合物的制备

Preparation of Dithiol-methyl-trithio-undecanethiol Composition

摘要

采用亲核取代、扩链反应和硫醚化与扩链3个步骤,制备得到包含5,7-二巯基甲基-1,11-二巯基-3,6,9-三硫杂十一烷和4,8-二巯基甲基-1,11-二巯基-3,6,9-三硫杂十一烷两种结构异构体的二巯基甲基三硫杂十一烷,并将其作为改性聚氨酯光学材料的核心单体,将该单体与多异氰酸酯和双酚A环氧树脂合成的多硫醇组合物,可制备聚合性光学材料.实验结果表明,该光学材料具有高透光率、高折射率以及优异的力学性能.

Abstract

We prepared and obtained dimercaptomethyl trisulfide containing two structural isomers 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trisulfide and 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trisulfide through three steps: nucleophilic substitution, chain extension reaction, and thioetherification and chain extension. As the core monomer for modifying polyurethane optical materials, polymeric optical materials could be prepared by synthesizing polythiol composition compounded with polyisocyanate and bisphenol A epoxy resin using this monomer. The experimental results show that the optical material has high transmittance, high refractive index, and excellent mechanical properties.

关键词

硫醚 / 二巯基甲基 / 三硫杂十一烷 / 多异氰酸酯 / 双酚A环氧树脂

Key words

thioether / dithiomethyl / trisulfur undecane / polyisocyanate / bisphenol A epoxy resin

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基金资助

国家专精特新重大专项基金(2150805)

江苏省科技成果转化项目(BA2023064)