以3-乙基-3-羟甲基氧杂环丁烷(OXT101)和1,4-二溴丁烷为原料,四正丁基溴化铵为相转移催化剂,在碱性条件下合成了一种新型阳离子光固化活性单体3,3 '-[1,4-丁基双(氧基亚甲基)]-双-(3-乙基)氧杂环丁烷.研究表明,其合成最佳工艺条件为:当1,4-二溴丁烷用量为0.2 mol时,1,4-二溴丁烷与3-乙基-3-羟甲基氧杂环丁烷摩尔比为1∶2.5,四正丁基溴化铵2g,KOH提供碱环境,用量为1.0 mol,0℃下反应时间24 h.在此条件下,产率达49.3％.同时,对合成的活性单体的固化机理及其稀释性能进行了研究,结果表明新型活性单体的固化机理为阳离子开环聚合,稀释性能可与目前市场上常用的阳离子活性单体媲美,具有一定的工业实用价值.
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