Synthesis technology and property of hydroxypropyl starch by using potato starch as raw material, propylene oxide as etherization reagent and sodium hydroxide as catalyst, were studied in this paper.
The influences of catalyst, solvent, temperature and raw material on the yield of TPP are investigated. The yield of TPP increases from 30.0% to 49.5%.
研究了催化剂、溶剂、温度、原料等因素对四苯基卟啉收率的影响，收率由30.0％提高到49.5％。
3
The amine-modified polyether KL-1 sewage disposal agent was prepared with organic alcohol containing 1 ~ 4 hydroxy, epoxy chloropropane, organic amine as raw materials by catalyst.