Late-metal catalysts for ethylene homo- and copolymerization

被引:2980
作者
Ittel, SD [1 ]
Johnson, LK
Brookhart, M
机构
[1] DuPont Co Inc, Cent Res & Dev, Wilmington, DE 19880 USA
[2] Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA
关键词
D O I
10.1021/cr9804644
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Ethylene polymerization and copolymerization using late metal catalysts are discussed. Late metal catalysts with high electrophilicity and/or steric hindrance produces high molecular weight polymer. The detailed mechanistic picture developed around the cationic α-diimine nickel and palladium catalysts provides a mechanistic rationale. In the copolymerization of ethylene and methyl acrylate by the α-diimine palladium catalysts, functional-group tolerance of late metal catalysts is evident. Late metal catalysts enable the synthesis of new classes of polymers unavailable through other means of polymerization. The preparation of linear low density polyethylenes from ethylene represents an opportunity to design ethylene homopolymers for target applications.
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页码:1169 / 1203
页数:35
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