Unusual features of ethylene copolymerization reactions with binary metallocene catalysts

被引：2

作者：

Kissin, Y. V. ^{[1
]}

机构：

[1] Rutgers State Univ, Dept Chem & Chem Biol, 610 Taylor Rd, Piscataway, NJ 08854 USA

来源：

JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY | 2017年 / 54卷 / 01期

关键词：

Copolymerization of ethylene and 1-alkenes; DSC analysis; ethylene; GPC analysis; metallocene catalysts; OLEFIN POLYMERIZATION CATALYSTS; ION-PAIRS; ETHENE/1-HEXENE COPOLYMERIZATION; PROPYLENE POLYMERIZATION; METHYLALUMINOXANE MAO; STEREOBLOCK POLYMERS; REACTION EQUILIBRIA; ME-MAO(-) ANIONS; NMR; ZIRCONOCENE;

D O I：

10.1080/10601325.2017.1250309

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Ethylene/1-hexene copolymers produced with MAO-activated binary metallocene catalysts, such as combinations Cp2ZrCl2 + (Me5Cp)(2)ZrCl2, (Ind-H-4)(2)ZrCl2 + (Me5Cp)(2)ZrCl2, Cp2ZrCl2 + Cp2TiCl2, etc., contain three types of components. Two of the components can be attributed to active centers derived from each individual metallocene complex, and one or two materials are produced with different types of active center. Some of the binary catalysts generate the three components in comparable proportions, whereas other catalysts produce copolymers with one dominant component, which does not resemble the copolymers produced with the individual complexes. A mechanism is proposed for the formation of the new copolymer materials.

引用

页码：6 / 15

页数：10

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