以三齿苯氧亚胺配合物为催化剂合成超高分子量聚乙烯

IF 1 4区化学 Q4 POLYMER SCIENCE

Polymer Science, Series B Pub Date : 2024-12-23 DOI:10.1134/S1560090424601390

L. A. Rishina, Y. V. Kissin, S. S. Lalayan, V. G. Krasheninnikov, S. S. Gusarov, A. S. Zabolotnov, A. A. Gulin, V. A. Tuskaev, S. Ch. Gagieva, B. M. Bulychev

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引用次数: 0

摘要

Ti4+与（O，N，O）-三齿苯氧亚胺配体配合物和二元Al(C2H5)2Cl/Mg(C4H9)2活化剂（摩尔[Al]/[Mg]比为~3）组成的新型催化剂体系可合成分子量超过1 × 106的乙烯聚合物。35℃下生产的乙烯均聚物的分子量为2.6 × 106，含有少量（低于1mol %）的1-己烯、1-辛烯和1-癸烯的乙烯共聚物的分子量为1.5 × 106。聚合物分子量分布较窄（Mw/Mn比值为3.5 ~ 5），力学性能与商用超高分子量聚乙烯相近。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Synthesis of Ultrahigh Molecular Weight Polyethylenes with New Catalyst Based on Ti4+ Complex with a Tridentate Phenoxyimine Ligand

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Synthesis of Ultrahigh Molecular Weight Polyethylenes with New Catalyst Based on Ti4+ Complex with a Tridentate Phenoxyimine Ligand

A novel catalyst system containing a complex of Ti⁴⁺ with a (O,N,O)-tridentate phenoxyimine ligand and a binary Al(C₂H₅)₂Cl/Mg(C₄H₉)₂ activator at a molar [Al]/[Mg] ratio of ~3 affords the synthesis of ethylene polymers with molecular weight in excess of 1 × 10⁶. Ethylene homopolymer produced at 35°C has M_w ~ 2.6 × 10⁶ and ethylene copolymers with small amounts (below 1 mol %) of 1-hexene, 1-octene and 1-decene have M_w ~ 1.5 × 10⁶. The polymers have a relatively narrow molecular weight distribution (M_w/M_n ratio from 3.5 to 5), their mechanical properties are similar to properties of commercial UHMW polyethylenes.

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来源期刊

Polymer Science, Series B 化学-高分子科学

CiteScore

1.80

自引率

8.30%

发文量

审稿时长

>0 weeks

期刊介绍： Polymer Science, Series B is a journal published in collaboration with the Russian Academy of Sciences. Series B experimental and theoretical papers and reviews dealing with the synthesis, kinetics, catalysis, and chemical transformations of macromolecules, supramolecular structures, and polymer matrix-based composites (6 issues a year). All journal series present original papers and reviews covering all fundamental aspects of macromolecular science. Contributions should be of marked novelty and interest for a broad readership. Articles may be written in English or Russian regardless of country and nationality of authors. All manuscripts are peer reviewed