| (dbm)_3Ti(OPh)/MAO合成间规聚苯乙烯 |
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| 引用本文： | 阎卫东,周鼐,洪瀚,谢光华,胡友良.(dbm)_3Ti(OPh)/MAO合成间规聚苯乙烯[J].石油化工,1998(9). |
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| 作者姓名： | 阎卫东 周鼐 洪瀚 谢光华 胡友良 |
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| 作者单位： | 大庆石油学院石油化工系，中国科学院化学研究所 |
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| 基金项目： | 国家“九五”攻关课题,中国科学院、中国石化总公司高分子化学联合实验室资助 |
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| 摘 要： | 用（ｄｂｍ）３Ｔｉ（ＯＰｈ）／ＭＡＯ催化苯乙烯间规聚合反应。研究了Ａｌ／Ｔｉ摩尔比、催化剂浓度、聚合时间和单体浓度等因素对该反应的影响。结果表明，该非茂钛催化剂体系本体聚合ｎ（Ａｌ）／ｎ（Ｔｉ）＝５００时聚合活性可达６１５ｋｇ／（ｍｏｌｈ）（每摩尔Ｔｉ每小时生成的ＰＳ量）；溶液聚合催化剂浓度为２００～１２００μｍｏｌ／Ｌ时，聚合活性衰减平缓，苯乙烯的转化率随时间而直线上升。用１３ＣＮＭＲ、ＤＳＣ表征了得到的聚合物，其间规度≥９６％，熔点为２６９～２７１℃。
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| 关 键 词： | 苯乙烯 间规聚合 β－二酮钛 苯氧基 |
Syndiotactic Polymerization of Styrene via(dbm) 3Ti(OPh)/MAO |
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| Yan,Weidong.Syndiotactic Polymerization of Styrene via(dbm) 3Ti(OPh)/MAO[J].Petrochemical Technology,1998(9). |
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| Authors: | Yan Weidong |
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| Abstract: | Syndiotactic polystyrene(sPS)was polymerized with(dbm) 3Ti(OPh)/MAO The influence factors were investigated including Al/Ti molar ratio,catalyst concentration,polymerization time and styrene concentration When Al/Ti=500,the bulk polymerizing activity was up to 615 kg/(mol·h) Under the given condition,with the polymerization time increasing,the conversion of styrene increased almost linearly The syndioatcticity of the titled polystyrene was no less than 96% and the melting point was 269～271 ℃ The polymer was characterized with 13 C NMR and DSC as well |
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| Keywords: | styrene syndiotactic polymerization titanium β diketonate phenoxyl |
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