摘要
研究了采用毒性较小的固体光气(BTC)代替光气与己二胺反应合成1,6-己二异氰酸酯的方法,探讨了原料配比、反应温度以及反应时间等对产物收率的影响。结果表明,BTC与己二胺的原料配比为1.5∶1、反应温度为60℃、反应时间3 h,产品的产率为76%。用红外光谱和质谱对产物进行了表征,结果显示合成产物具有异氰酸酯的显著特征,纯度较高。说明采用BTC代替光气合成HD I是一条切实可行的路线。
The method of synthezing hexamethylene diisocyanate（HDI） from 1,6-hexanediamine and bis（ trichloromethyl ）carbonate （BTC） as the phosgene substitute material was introduced. The influence of reaction conditions on yield of hexamethylene diisocyanate was studied. Results show that molar ratio of BTC and 1,6-hexanedi- amine is 1.5：1, reaction temperature is 60℃, time is 3 hour, the efficiency is 76%. The product was identified by IR and MS. The synthetic method of HDI using BTC to substitute phosgene was expected to be effective and feasible.
出处
《聚氨酯工业》
2006年第2期15-17,共3页
Polyurethane Industry
基金
湖北省教育厅科学研究院计划项目D200515009
关键词
1
6-己二异氰酸酯
光气
固体光气
1,6-diisocyabatohexa
phosgene
bis （trichloromethyl） carbonate
