采用松香、三甲胺和环氧氯丙烷为原料，溶剂法合成了阳离子松香。
The cationic rosin was synthesized by solvent method, with rosin, trimethylamine and epoxy chloropropane as raw materials.
目的研究极性有机溶剂辅助阴、阳离子交换色谱串接组合纯化蛋白质的可行性。
PurposeTo explore the possibility of combination of anion and cation exchange chromatography by using the polarity organic solvents in eluent.
使用溶剂循环方法，研究了季铵型阳离子淀粉的干法合成及性能。
Quaternary ammonium type cationic starch was synthesized with solvent circulation method, as well as its property was studied.
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