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.

本文以马铃薯淀粉为原料，环氧丙烷为醚化剂，氢氧化钠为催化剂对低取代度羟丙基淀粉的制备工艺进行了研究。

youdao

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％。

youdao

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.

以含1 ~ 4个羟基的有机醇、环氧氯丙烷和有机胺为原料，在催化剂作用下聚合成有机胺改性聚醚(KL - 1)污水处理剂。

youdao