FROM RING-OPENING METATHESIS POLYMERIZATION TO ZIEGLER-NATTA POLYMERIZATION - A METHOD FOR OBTAINING POLYNORBORNENE POLYETHYLENE BLOCK-COPOLYMERS

被引：22

作者：

TRITTO, I ^{[1
]}

SACCHI, MC ^{[1
]}

GRUBBS, RH ^{[1
]}

机构：

[1] CALTECH,DIV CHEM & CHEM ENGN,ARNOLD & MABEL BECKMAN LABS CHEM SYNTH,PASADENA,CA 91125

来源：

JOURNAL OF MOLECULAR CATALYSIS | 1993年 / 82卷 / 01期

关键词：

ALKYLTITANOCENE COMPLEX CATALYST; C-13-NMR METATHESIS POLYMERIZATION; POLYNORBORNENE POLYETHYLENE BLOCK COPOLYMER; RING-OPENING; TITANACYCLOBUTANE; ZIEGLER-NATTA POLYMERIZATION;

D O I：

10.1016/0304-5102(93)80075-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have transformed titanacyclobutanes, catalysts for living ring-opening metathesis polymerization (ROMP), into sigma-alkyltitanocene complexes, components of catalysts for Ziegler-Natta polymerizations, with the aim of obtaining poly-alpha-olefin-polynorbornene block copolymers. 3,3-Dimethylcyclopropene-titanacyclobutane, the most effective Ti-based initiator of ROMP polymerizations, and the chain propagating titanacycle, have been converted into alkoxy derivatives. (C2H4)-C-13 (1-C-13, 90% enriched) polymerizations, catalyzed by these alkyltitanocene alkoxides in the presence of the AlEtCl2 cocatalyst, have been monitored by C-13 NMR spectroscopy. We have shown that polyethylene can grow on the Ti-alkyl bond derived from the ROMP catalysts.

引用

页码：103 / 111

页数：9

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