摘要
以硬脂酸和乙二胺为原料在高温下脱水得到乙撑双硬酸脂酰胺产品。研究了硬脂酸种类、反应物料比、催化剂、抗氧剂、反应温度和反应时间对产品的影响。适宜的工艺条件为：n（硬脂酸1840）∶n（乙二胺）=2∶1.15,磷酸与亚磷酸为复配催化剂（硬脂酸质量的0.92%）,m（磷酸）∶m（亚磷酸）=3∶10,硼氢化钠做抗氧剂（硬脂酸质量的0.21%）,成盐温度100~110℃,成盐时间2h,脱水温度190~200℃,脱水时间5~6h,此工艺条件下得到白色产品,m.p.143~150℃。
Ethylenebisstearamide（EBS） was prepared by condensation of stearic acid and ethylenediamine at high temperature.The influencing factors on the reaction were investigated and optimized as following： n（stearic acid 1840）∶n（ethylenediamine）=2∶1.15,mixture of phosphoric acid and phosphorous acid as the catalyst（0.92% mass of stearic acid）,m（phosphoric acid）∶m（phosphorous acid）=3∶10,sodium borohydride as the antioxidant（0.21% mass of stearic acid）,salting temperature 100~110℃,salting time 2 h,dehydration temperature 190~ 200 ℃,dehydration time 5~6 h.The white product was obtained with melting point of 143~150℃.
出处
《精细化工中间体》
CAS
2013年第1期59-62,共4页
Fine Chemical Intermediates
