Investigation of the reaction between benzophenone and trimethylaluminium: A source of novel aluminic activator for single-site olefin polymerization catalysts

被引：6

作者：

Dalet, T ^{[1
]}

Cramail, H ^{[1
]}

Deffieux, A ^{[1
]}

机构：

[1] Univ Bordeaux 1, CNRS, UMR 5629, Lab Chim Polymeres Organ,ENSCPB, F-33607 Pessac, France

来源：

MACROMOLECULAR SYMPOSIA | 2006年 / 231卷

关键词：

catalysts; iron catalyst; MAO; polyethylene (PE);

D O I：

10.1002/masy.200551312

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 reaction between benzophenone and TMA was investigated in details at 20 degrees C for different TMA/benzophenone (r) ratios. For r=2, a heterodimer mu(1,1-diphenylethoxy)-mu-methyl-tetramethyidialuminium (8) is only formed. The latter was found able to activate MeDIP(2,6-iPrPh)(2)FeCl2 catalyst towards ethylene polymerization. Such catalytic system leads to the formation of high molar mass polyethylene with a broad molar mass distribution, without the presence of oligomers, that is attributed to a strong reduction of the transfer reaction to TMA.

引用

页码：110 / 115

页数：6

共 10 条

[1] Cocatalysts for metal-catalyzed olefin polymerization: Activators, activation processes, and structure-activity relationships [J].

Chen, EYX ;

Marks, TJ .

CHEMICAL REVIEWS, 2000, 100 (04) :1391-1434

[2]

GEERTS RL, 1995, Patent No. 5414180

[3] ORGANOALUMINUM COMPOUNDS .24. EXHAUSTIVE C-METHYLATION OF KETONES BY TRIMETHYLALUMINUM [J].

MEISTERS, A ;

MOLE, T .

AUSTRALIAN JOURNAL OF CHEMISTRY, 1974, 27 (08) :1655-1663

[4]

PALMAKA SW, 1998, Patent No. 5831109

[5]

Pédeutour JN, 2001, MACROMOL RAPID COMM, V22, P1095, DOI 10.1002/1521-3927(20011001)22:14<1095::AID-MARC1095>3.0.CO

[6]

2-R

[7]

Radhakrishnan K, 2002, MACROMOL RAPID COMM, V23, P829, DOI 10.1002/1521-3927(20021001)23:14<829::AID-MARC829>3.0.CO

[8]

2-5

[9] Highly active iron and cobalt catalysts for the polymerization of ethylene [J].

Small, BL ;

Brookhart, M ;

Bennett, AMA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (16) :4049-4050

[10]

WELBORN HC, 1993, Patent No. 348126

← 1 →