Highly Active and Isospecific Styrene Polymerization Catalyzed by Zirconium Complexes Bearing Aryl-substituted [OSSO]-Type Bis(phenolate) Ligands

被引：23

作者：

Nakata, Norio ^{[1
]}

Toda, Tomoyuki ^{[1
]}

Saito, Yusuke ^{[1
]}

Watanabe, Takanori ^{[1
]}

Ishii, Akihiko ^{[1
]}

机构：

[1] Saitama Univ, Grad Sch Sci & Engn, Dept Chem, Sakura Ku, 255 Shimo Okubo, Saitama 3388570, Japan

来源：

POLYMERS | 2016年 / 8卷 / 02期

关键词：

zirconium; post-metallocene; styrene polymerization; OSSO]-type ligand; isotactic; ISOTACTIC POLYSTYRENE; SYNDIOSPECIFIC STYRENE; SINGLE-COMPONENT; 1-HEXENE POLYMERIZATION; SYNDIOTACTIC POLYSTYRENE; LIVING POLYMERIZATION; EPSILON-CAPROLACTONE; ANSA-LANTHANIDOCENES; TITANIUM COMPLEXES; ANIONIC SYNTHESIS;

D O I：

10.3390/polym8020031

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

[OSSO]-type dibenzyl zirconium(IV) complexes 9 and 10 possessing aryl substituents ortho to the phenoxide moieties (ortho substituents, phenyl and 2,6-dimethylphenyl (Dmp)) were synthesized and characterized. Upon activation with dMAO (dried methylaluminoxane), complex 9 was found to promote highly isospecific styrene polymerizations ([mm] = 97.5%-99%) with high molecular weights M-w up to 181,000 gmmol(-1). When the Dmp-substituted pre-catalyst 10/dMAO system was used, the highest activity, over 7700 g<bold>mmol</bold>(10)(-1)h(-1), was recorded involving the formation of precisely isospecific polystyrenes of [mm] more than 99%.

引用

页数：10

共 63 条

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