(567g) Synthesizing High Selectivity Bromobutyl Rubber By a Microreactor System
AIChE Annual Meeting
Wednesday, November 1, 2017 - 2:24pm to 2:43pm
Synthesizing high selectivity bromobutyl
rubber by a microreactor system
Pei Xie, Kai Wang, Guangsheng Luo
State Key Laboratory of Chemical Engineering, Department of Chemical Engineering,
Tsinghua University, Beijing 100084, China
rubber (BIIR), an important synthetic rubber, not only maintains many desirable
characteristics of traditional butyl rubber (IIR), but also has faster
vulcanization rate. However, there still exists two critical
problems in the process of brominating IIR in n-hexane, that are the
limited mixing condition in traditional reactors and the low selectivity of
target product due to the generation of HBr in the process. Herein, a microreactor
platform was developed to enhance the mixing situation. And to
remove HBr from the reaction system in time, a water assistant technology and
calcium stearate in-situ neutralization method were successfully implemented in
the microreactor system, which produced high quality BIIR with almost 100%
selectivity and less reduced molecule weight.
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