STEREOSTRUCTURE OF REGIOIRREGULAR UNIT OF POLYPROPYLENE OBTAINED WITH RAC-ETHYLENE-BIS(1-INDENYL)ZIRCONIUM DICHLORIDE METHYLALUMINOXANE CATALYST SYSTEM STUDIED BY C-13-H-1 SHIFT CORRELATION 2-DIMENSIONAL NUCLEAR-MAGNETIC-RESONANCE SPECTROSCOPY

被引：41

作者：

MIZUNO, A ^{[1
]}

TSUTSUI, T ^{[1
]}

KASHIWA, N ^{[1
]}

机构：

[1] MITSUI PETROCHEM IND CO LTD,IWAKUNI POLYMER RES LABS,WAKI,YAMAGUCHI 740,JAPAN

来源：

POLYMER | 1992年 / 33卷 / 02期

关键词：

ZIRCONIUM CATALYST; REGIOIRREGULAR STRUCTURE; RACEMIC PLACEMENT; ISOTACTIC POLYPROPYLENE; C-13-H-1 2-DIMENSIONAL NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY;

D O I：

10.1016/0032-3861(92)90981-2

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The stereochemical configuration of the regioirregular unit with racemic placement included in isotactic polypropylene, which was prepared with a rac-ethylene(1-indenyl)zirconium dichloride/methylaluminoxane catalyst system at 30-degrees-C, was studied by C-13 - H-1 shift correlation two-dimensional nuclear magnetic resonance spectroscopy. The stereostructure was also studied for the regioirregular unit of propylene copolymer with a small amount of ethylene units. It is concluded that the 2,1-insertion, in addition to the ordinary 1,2-insertion, of propylene monomer is also stereospecifically controlled by the catalyst.

引用

页码：254 / 258

页数：5

共 5 条

[1]

CHENG HN, 1989, MAKROMOL CHEM, V190, P1931

[2]

CHENG HN, 1987, MAKROMOL CHEM, V188, P135

[3] MICROSTRUCTURE OF ISOTACTIC POLYPROPYLENE PREPARED WITH HOMOGENEOUS CATALYSIS - STEREOREGULARITY, REGIOREGULARITY, AND 1,3-INSERTION [J].

GRASSI, A ;

ZAMBELLI, A ;

RESCONI, L ;

ALBIZZATI, E ;

MAZZOCCHI, R .

MACROMOLECULES, 1988, 21 (03) :617-622

[4]

SOGA K, 1987, MAKROMOL CHEM-RAPID, V8, P305

[5] PROPYLENE HOMOPOLYMERIZATION AND COPOLYMERIZATION WITH ETHYLENE USING AN ETHYLENEBIS(1-INDENYL)ZIRCONIUM DICHLORIDE AND METHYLALUMINOXANE CATALYST SYSTEM [J].

TSUTSUI, T ;

ISHIMARU, N ;

MIZUNO, A ;

TOYOTA, A ;

KASHIWA, N .

POLYMER, 1989, 30 (07) :1350-1356

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