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CO₂法合成六亚甲基二异氰酸酯的工艺研究

Study on synthesis process of hexamethylene diisocyanate with CO₂ method

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【Author】 FAN Chun-fang1,GUO Deng-yin2,WANG Jian-long2,CHEN Mei-jun3(1.Technic Center of Shanxi Sanwei Group Co.,Ltd.,Linfen 041600,China; 2.College of Chemical Engineering & Environment of North University of China,Taiyuan 030051,China; 3.Gansu Yinguang Chemistry Industry Group Co.,Ltd.,Baiyin 730900,China)

【机构】山西三维集团股份有限公司技术中心；中北大学化工与环境学院；甘肃银光化学工业集团有限公司；

【摘要】将氨基甲酸酯阴离子与脱水剂邻磺基苯甲酸酐(SBA)进行反应合成了六亚甲基二异氰酸酯(HDI),考察了脱水剂用量、反应温度、反应压力和反应时间对反应产率的影响,并对该产物的结构用FT-IR和折光率等进行了表征。实验结果表明,HDI合成的最佳工艺条件为:反应温度-10℃,压力0.55 MPa,时间60 min,n(脱水剂)∶n(己二胺)=2∶1。更多还原

【Abstract】 The hexamethylene diisocyanate(HDI) was synthesized by reaction between urethane anion and 2-sulfobenzoic anhydride(SBA) as dehydration agent.The influence of dehydration agent content,reaction temperature,reaction pressure and reaction time on reaction yield were reviewed.The structure of the product was characterized by FT-IR and the refractive index.The experimental results showed that optimal process conditions of HDI synthesis were: reaction temperature at-10 ℃,the pressure at 0.55 MPa,time at 60 min,molar ratio of SBA and 1,6-hexanediamine at 2∶1.更多还原