期刊文献+

乙烯/降冰片烯共聚物的合成及其结构 被引量:2

Synthesis and Structure of Cyclic Olefin Copolymer
下载PDF
导出
摘要 针对环烯烃与α-烯烃共聚合而成的热塑性工程塑料催化剂的选择,文采用β-二亚胺钛催化剂合成了乙烯与降冰片烯的共聚物,进行了其微观结构和催化机理研究.研究结果表明,β-二亚胺钛催化剂能够很好地催化乙烯与降冰片烯的共聚合.通过对合成的共聚物的微观结构的分析发现,钛催化剂合成的乙烯/降冰片烯共聚物以无规结构为主,共聚物中出现了降冰片烯的二聚和三聚序列结构.共聚合机理的研究也表明该催化剂有利于合成乙烯与降冰片烯的无规共聚物. The importance role of choosing suitable catalysts in preparing thermoplastic cyclic olefin copolymer(COC) is emphasibed.The paper studies the copolymerization of ethylene with norbornene catalyzed by bis(β-diketiminato)titanium complex/MAO.The microstructure of COC obtained and the copolymerization mechanism are investigated.The results indicate that bis(β-diketiminato) titanium complex is a good catalyst for catalyzing copolymerization of ethylene with norbornene in the presence of MAO.The obtained polymers are an alternative copolymer with norbornene dimer and trimer.Additionally,the mechanism analysis shows that the titanium complex is favorable to produce random ethylene-norbornene copolymer.
作者 李永飞 伍青
出处 《西安工业大学学报》 CAS 2010年第5期449-453,共5页 Journal of Xi’an Technological University
基金 陕西省教育厅科研专项(07JK273) 陕西省自然科学基金(2007B20) 2010年陕西省教育厅科研计划项目
关键词 β-二亚胺钛 环烯烃共聚物 共聚物结构 聚合机理 bis(β-diketiminato) titanium cyclic olefin copolymer structure of COC polymerization mechanism
  • 相关文献

参考文献14

  • 1Luo X,Wu Q. Vinyl Polymerization of Cyclic Olefins[J].Petrol Chem Ind, 2001,30(7): 567. 被引量:1
  • 2Karninsky W. New Polymers by Metallocene Catalysis [J].Micromol. Chem. Phys, 1996,197 : 3907. 被引量:1
  • 3Ruchatz D, Fink G. Ethene-Norhornene Copolymerization with Homogeneous Metallocene and Half-Sandwich Catalysts :Kinetics and Relationships between Catalyst Structure and Polymer Structure 3 Copolymerization Parameters and Copolymerization Diagrams[J]. Macromolecules, 1998,31 : 4681. 被引量:1
  • 4Tritto I, Boggioni L, Ferro D R. Alternating Isotactic Ethylene-Norbornene Copolymers by C1 - Symmetric Metalloeenes: Determination of the Copolyrnerization Parameters and Mechanistic Considerations on the Basis of Pentad Analysis [J]. Maeromoleeules, 2004, 37:9681. 被引量:1
  • 5McKnight A L, Waymouth R M. Group 4 ansa-Cyclopentadienyl-Amido Catalysts for Olefin Polymerization[J]. Chem Rev, 1998,98: 2587. 被引量:1
  • 6Yoshida Y, Mohri J I, Ishii S l,et al. Living Copolymerization of Ethylene with Norbornene Catalyzed by Bis(Pyrrolide-Imine) Titanium Complexes with MAO [J]. J Am Chem Soc, 2004,126:12023. 被引量:1
  • 7Li X, Dai K, Ye W, et al. New Titanium Complexes with Two β-Enaminoketonato Chelate Ligands: Syntheses, Structures, and Olefin Polymerization Aetivities[J]. Organometallies, 2004,23 : 1223. 被引量:1
  • 8Li Y,Gao H,Wu Q. Homo- and Copolymerization of Ethylene and Norbornene with Bis ( b-diketiminato) Titanium Complexes Activated with Methylaluminoxane[J].J Polym Sci: Part A: Polym. Chem, 2008,46 : 93. 被引量:1
  • 9Tritto I,Boggioni L,Sacchi M C,et al. Ethylene-Norbornene Copolymers Prepared with Metallocene- Based Catalysts: New Sequence Assignments by ^13 C NMR[J]. Maeromol Rapid Cornmun, 1999,20: 279. 被引量:1
  • 10Amdt M, Engehausen R, Kaminsky W, et al. Hydrooligomerization of Cycloolefins -a View of the Micmstructure of Polynorlmmene[J]. J Mol Catal. A: Chem, 1995,101 : 171. 被引量:1

同被引文献30

引证文献2

二级引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部