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

收藏

页数：10

相关论文

共 63 条

[21] Synthesis, characterization, and reactivity of mono(phospholyl)lanthanoid(III) bis(dimethylaminobenzyl) complexes [J].

Jaroschik, Florian ;

Shima, Takanori ;

Li, Xiaofang ;

Mori, Kyouichi ;

Ricard, Louis ;

Le Goff, Xavier-Frederic ;

Nief, Francois ;

Hou, Zhaomin .

ORGANOMETALLICS, 2007, 26 (23) :5654-5660

[22] TRIETHYLALUMINUM-TITANIUM TETRACHLORIDE CATALYSTS FOR PREPARATION OF CRYSTALLINE POLYSTYRENE [J].

KERN, RJ ;

HURST, HG ;

RICHARD, WR .

JOURNAL OF POLYMER SCIENCE, 1960, 45 (145) :195-204

[23] HOMOGENEOUS SYNTHESIS OF ISOTACTIC POLYSTYRENE USING NORMAL-BUTYLLITHIUM INITIATOR [J].

KERN, RJ .

NATURE, 1960, 187 (4735) :410-410

[24] Highly syndiospecific polymerization of styrene catalyzed by allyl lanthanide complexes [J].

Kirillov, E ;

Lehmann, CW ;

Razavi, A ;

Carpentier, JF .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (39) :12240-12241

[25] Synthesis, structure and α-olefin polymerization activity of group 4 metal complexes with [OSSO]-type bis(phenolate) ligands [J].

Konkol, Marcin ;

Nabika, Masaaki ;

Kohno, Tetsuya ;

Hino, Takahiro ;

Miyatake, Tatsuya .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 2011, 696 (09) :1792-1802

[26] Alternating and Random Copolymerization of Isoprene and Ethylene Catalyzed by Cationic Half-Sandwich Scandium Alkyls [J].

Li, Xiaofang ;

Nishiura, Masayoshi ;

Hu, Lihong ;

Mori, Kyouichi ;

Hou, Zhaomin .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (38) :13870-13882

[27] Stereoselective Polymerization of Styrene with Cationic Scandium Precursors Bearing Quinolyl Aniline Ligands [J].

Liu, Dongtao ;

Luo, Yunjie ;

Gao, Wei ;

Cui, Dongmei .

ORGANOMETALLICS, 2010, 29 (08) :1916-1923

[28] Scandium half-metallocene-catalyzed syndiospecific styrene polymerization and styrene-ethylene copolymerization: Unprecedented incorporation of syndiotactic styrene-styrene sequences in styrene-ethylene copolymers [J].

Luo, YJ ;

Baldamus, J ;

Hou, ZM .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (43) :13910-13911

[29] Anionic synthesis of highly isotactic polystyrene in hexane in the presence of lithium hydroxides [J].

Makino, T ;

Hogen-Esch, TE .

MACROMOLECULES, 1999, 32 (17) :5712-5714

[30]

Malanga M, 2000, ADV MATER, V12, P1869, DOI 10.1002/1521-4095(200012)12:23<1869::AID-ADMA1869>3.0.CO

← 1 2 3 4 5 6 7 →