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2015•Chemical Research and ApplicationRequires access

Study on m-xylylene diisocyanate synthesis with triphosgene

Dong Jian-xun, Zhang Yijie, LI Shi-qiang, Sujing Wang, Xiaoyan Zhang, LI Shao-fei, China Pingmei Shenma Energy

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Abstract

The synthesis of m-xylylene diisocyanate(MXDI) from m-xylylenediamine(MXDA) and triphosgene(BTC) substitute material was studied.Factors such as molar ratio of raw materials,reaction temperature,reaction time and nitrogen rate were also studied.The optimal conditions was that the molar ratio to MXDA and BTC was 1.25: 1.0,the reaction system was purged with nitrogen at a rate 10 m L·min-1,the reaction temperature was 130℃ and the reaction time was 6.0 h.Under the optimum condition,the MXDI yield was 80.65%.

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What this paper is about

The synthesis of m-xylylene diisocyanate(MXDI) from m-xylylenediamine(MXDA) and triphosgene(BTC) substitute material was studied.Factors such as molar ratio of raw materials,reaction temperature,reaction time and nitrogen rate were also studied.The optimal conditions was that the molar ratio to MXDA and BTC was 1.25: 1.0,the reaction system was purged with nitrogen at a rate 10 m L·min-1,the reaction temperature was 130℃ and the reaction time was 6.0 h.Under the optimum condition,the MXDI yield was 80.65%.

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Available abstract

The synthesis of m-xylylene diisocyanate(MXDI) from m-xylylenediamine(MXDA) and triphosgene(BTC) substitute material was studied.Factors such as molar ratio of raw materials,reaction temperature,reaction time and nitrogen rate were also studied.The optimal conditions was that the molar ratio to MXDA and BTC was 1.25: 1.0,the reaction system was purged with nitrogen at a rate 10 m L·min-1,the reaction temperature was 130℃ and the reaction time was 6.0 h.Under the optimum condition,the MXDI yield was 80.65%.

Key concepts: Triphosgene, Xylylene, Molar ratio, Yield (engineering), Nitrogen, Reaction conditions, Raw material, Chemistry

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