节点文献
端羟基聚环氧氯丙烷制备过程中齐聚物的生成与去除
Formation and Removal of Oligomer During Preparation of Hydroxy-Terminated Polyepichlorohydrin
【摘要】 阳离子开环聚合制备端羟基聚环氧氯丙烷(PECH)时,往往伴随着一定量齐聚物的生成而使聚醚质量劣化。溶剂萃取法可有效去除相对分子质量为700￣5300的PECH的齐聚物。实验表明,处理不同相对分子质量的PECH,应采用不同的萃取溶剂。
【Abstract】 Oligomers are often formed in the preparation of hydroxy-terminated polyepichlorohydrin(PECH) by cation ring- opening polymerization, so that quality of PECH is reduced. Solvent extraction method can effectively remove the oligomer with relative molecular mass of 700￣5300 from PECH. It is discovered through experiment that treating PECHs with different relative molecular mass should use different extraction solvents.
【关键词】 阳离子开环聚合；
端羟基聚环氧氯丙烷；
齐聚物；
去除；
【Key words】 cation ring-opening polymerization； hydroxy-terminated polyepichlorohydrin； oligomer； removal；
【Key words】 cation ring-opening polymerization； hydroxy-terminated polyepichlorohydrin； oligomer； removal；
- 【文献出处】 化学推进剂与高分子材料 ,Chemical Propellants & Polymeric Materials , 编辑部邮箱 ,2007年06期
- 【分类号】TQ316.3
- 【被引频次】3
- 【下载频次】226