Development and design of [OSSO]-type catalysts for precise polymerization of versatile alfa-olefins
Project/Area Number |
25410035
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Organic chemistry
|
Research Institution | Saitama University |
Principal Investigator |
Nakata Norio 埼玉大学, 理工学研究科, 助教 (50375416)
|
Project Period (FY) |
2013-04-01 – 2016-03-31
|
Project Status |
Completed (Fiscal Year 2015)
|
Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
|
Keywords | ポストメタロセン / α-オレフィン / 立体特異的重合反応 / ジルコニウム / ハフニウム / 硫黄 / [OSSO]型配位子 / オレフィン重合 / プロピレン / [OSSO]配位子 / 高分子 / シクロアルカン / スチレン |
Outline of Final Research Achievements |
In order to realize precise polymerization of versatile alfa-olefins such as propylene and styrene, novel [OSSO]-type bis(phenolate) ligands based on a trans-1,2-cyclooctanediyl platform and their zircoium complexes were developed. As a result, upon activation with dMAO (dried methylaluminoxane), the complex 4 was found to promote highly isospecific styrene polymerizations ([mm] = 97.5-99%) with high molecular weights up to 181,000 g mmol-1. When the Dmp-substituted pre-catalyst 5/dMAO system was used, the highest activity over 7,700 g mmol(5)-1 h-1 was recorded involving the formation of precisely isospecific polystyrenes of [mm] more than 99%.
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Report
(4 results)
Research Products
(86 results)