丙烯聚合反应中钛镁催化剂立体专一性的调控

IF 1 4区化学 Q4 POLYMER SCIENCE

Polymer Science, Series B Pub Date : 2024-12-23 DOI:10.1134/S1560090424601341

A. N. Klyamkina, P. M. Nedorezova, L. A. Rishina, A. M. Aladyshev

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引用次数: 0

摘要

研究了外给体性质对AlEt3活化钛镁催化剂丙烯聚合反应的影响。使用环己基甲基二甲氧基硅烷作为供体增加了等规聚合物的含量，2,6-二甲基吡啶的使用促进了聚丙烯中异规组分的形成。通过组合不同的给体，可以调节催化体系中立体专一性的位点分布，改变聚丙烯的立体规则性、分子量特征和力学性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Regulation of Stereospecificity of Titanium–Magnesium Catalysts in Propylene Polymerization Reactions

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Regulation of Stereospecificity of Titanium–Magnesium Catalysts in Propylene Polymerization Reactions

The influence of external donor nature on propylene polymerization reactions with titanium-magnesium catalyst activated with AlEt₃ is studied. The use of cyclohexylmethyldimethoxysilane as the donor increases the content of isotactic polymer and the use of 2,6-dimethylpyridine promotes the formation of syndiotactic component in polypropylene. By combining different donors, it is possible to regulate the site distribution in catalytic system with respect to stereospecificity and to modify stereoregularity, molecular weight characteristics and mechanical properties of polypropylene.

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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