水溶性淬火剂用共聚醚的合成研究

研究了以ＫＯＨ为催化剂，二元或三元醇为起始剂，采用阴离子开环聚合合成淬火剂用共聚醚。结果表明：产物的分子量随起始剂和杂质量的减少而增加；聚醚的组成取决于投料比；其浊点随环氧乙烷含量增加而升高。起始剂用量≤８．０ｍｍｏｌＯＨ／１００ｇ单体；反应温度以１０５±５℃为宜；单体水分含量＜０．１％，醛含量＜０．１７％，环氧乙烷含量为８０±３ｍｏｌ％，合成的共聚醚分子量可大于１．０×１０４。

Study on Synthesis of Oxyethylene oxypropylene Copolyether for Water soluble Quenchant

The synthesis of oxyethylene oxypropylene copolyethers used for quenchant was studied by using anionic ring opening polymerization,diol or triol as the starting agent and KOH as the catalyst.It was found that the molecular weight of the polyether increased with the decrease of the amount of starting agent and impurities,and that the composition of polyether was dependent on the oxyethylene/oxypropylene ratio in the feed,and the cloud point increased with the increase of oxyethylene content.An oxyethylene oxypropylene copolyether with molecular weight≥1.0×10 4 was prepared when the reaction conditions were properly chosen:starting agent≤8.0mmol OH/100g monomer,temperature=105±5℃,water content<0.10%,aldehyde content<0 17%,oxyethylene content=80±3mol%