【摘要】 本文详细考察了山梨醇失水反应的影响因素,通过四因素三水平正交试验确定了失水山梨醇(脱水度1.0～1.1)最佳合成条件,并采用两步法合成得到了结构合理、色泽满意的Span-80。更多还原

【Abstract】 The influences on the dehydration reac- tion of sorbitol were investigated in detail,and the optimum conditions synthesizing sorbitan (dehydration degree: 1. 0-1. 1) were determined by means of the orthogonal test. Final-ly, Span-80, which has reasonable molecular structure and lighter colour was prepared by two-step process.更多还原