Living Regioselective Copolymerization of Ethylene with Nonconjugated Bicyclic Dienes Using (Salicylaldiminato)(beta-enaminoketonato) Titanium Catalysts
文献类型：期刊论文
| 作者 | Long YY ; Wang YX ; Liu JY ; Li XF ; Li YS |
| 刊名 | journal of polymer science part a-polymer chemistry
 |
| 出版日期 | 2011 |
| 卷号 | 49期号:21页码:4626-4638 |
| 关键词 | MOLECULAR-DYNAMICS SIMULATIONS CHAIN-TRANSFER POLYMERIZATION FOCK-SLATER CALCULATIONS IMINE CHELATE LIGANDS BLOCK-COPOLYMERS MONO(SALICYLALDIMINATO) TITANIUM EFFICIENT FUNCTIONALIZATION ISOTACTIC POLYPROPYLENE OLEFIN POLYMERIZATION METALLOCENE CATALYSTS |
| ISSN号 | 0887-624x |
| 通讯作者 | li xf |
| 中文摘要 | a series of heteroligated (salicylaldiminato)(beta-enaminoketonato) titanium complexes [3-(t)bu-2-oc(6)h(3)ch n(c(6)f(5))] [phn=c(cf(3))chcro]ticl(2) [3a: r ph, 3b: r c(6)h(4)cl(p), 3c: r = c(6)h(4)ome(p), 3d: r = c(6)h(4)me(p), 3e: r = c(6)h(4)me(o)] were synthesized and characterized. molecular structures of 3b and 3c were further confirmed by x-ray crystallographic analyses. in the presence of modified methylaluminoxane as a cocatalyst, these unsymmetric catalysts displayed favorable ability to incorporate 5-vinyl-2-norbornene (vnb) and 5-ethylidene-2-norbornene (enb) into the polymer chains, affording high-molecular weight copolymers with high-comonomer incorporations and alternating sequence under the mild conditions. the comonomer concentration in the polymerization medium had a profound influence on the molecular weight distribution of the resultant copolymer. at initial comonomer concentration of higher than 0.4 mol/l, the titanium complexes with electron-donating groups in the beta-enaminoketonato moiety mediated room-temperature living ethylene/vnb or enb copolymerizations. polymerization results coupled with density functional theory calculations suggested that the highly controlled living copolymerization is probably a consequence of the difficulty in chain transfer of vnb (or enb)-last-inserted species and some characteristics of living ethylene polymerization under limited conditions. (c) 2011 wiley periodicals, inc. j polym sci part a: polym chem 49: 4626-4638, 2011 |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000296255200014 |
| 公开日期 | 2012-06-08 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/44263]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Long YY,Wang YX,Liu JY,et al. Living Regioselective Copolymerization of Ethylene with Nonconjugated Bicyclic Dienes Using (Salicylaldiminato)(beta-enaminoketonato) Titanium Catalysts[J]. journal of polymer science part a-polymer chemistry,2011,49(21):4626-4638. |
| APA | Long YY,Wang YX,Liu JY,Li XF,&Li YS.(2011).Living Regioselective Copolymerization of Ethylene with Nonconjugated Bicyclic Dienes Using (Salicylaldiminato)(beta-enaminoketonato) Titanium Catalysts.journal of polymer science part a-polymer chemistry,49(21),4626-4638. |
| MLA | Long YY,et al."Living Regioselective Copolymerization of Ethylene with Nonconjugated Bicyclic Dienes Using (Salicylaldiminato)(beta-enaminoketonato) Titanium Catalysts".journal of polymer science part a-polymer chemistry 49.21(2011):4626-4638. |
入库方式： OAI收割
来源：长春应用化学研究所
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