Ti(IV) Complexes with OSSO-Type Diol Ligands as Catalysts for Synthesis of Ultrahigh-Molecular-Weight Polyethylene and Ethylene–Propylene Copolymers

IF 1.3 4区工程技术 Q3 CHEMISTRY, ORGANIC

Petroleum Chemistry Pub Date : 2024-02-15 DOI:10.1134/s0965544123090050

V. A. Tuskaev, S. Ch. Gagieva, K. F. Magomedov, M. D. Evseeva, E. G. Kononova, D. A. Davydov, I. V. Karandi, V. S. Bogdanov, B. M. Bulychev

{"title":"Ti(IV) Complexes with OSSO-Type Diol Ligands as Catalysts for Synthesis of Ultrahigh-Molecular-Weight Polyethylene and Ethylene–Propylene Copolymers","authors":"V. A. Tuskaev, S. Ch. Gagieva, K. F. Magomedov, M. D. Evseeva, E. G. Kononova, D. A. Davydov, I. V. Karandi, V. S. Bogdanov, B. M. Bulychev","doi":"10.1134/s0965544123090050","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>A series of novel complexes of titanium(IV) with OSSO-type ligands were synthesized. In the presence of Al/Mg activators such as {Et2AlCl+Bu2Mg} and {Et3Al2Cl3+Bu2Mg}, all the synthezed compounds catalyzed the polymerization of ethylene (with activity up to 2554 kgPE molM–1 h–1 atm–1). The otained ultrahigh-molecular-weight polyethylene (UHMWPE) samples had a molecular weight up to 7.6×106 Da and exhibited high melting points (up to 143°C) and high crystallinity (up to 84%). It was demonstrated that these polymers can be processed by a solvent-free method into high-strength/high-modulus oriented films (with breaking strength up to 2.2 hPa and elastic modulus up to 127.7 hPa). The synthesized compounds further manifested themselves as efficient pre-catalysts (as indicated by their catalytic activity up to 408 kgcopolymer molM–1 h–1 atm–1) for the preparation of ethylene–propylene copolymers with high propylene incorporation (up to 37%).","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Petroleum Chemistry","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1134/s0965544123090050","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, ORGANIC","Score":null,"Total":0}

引用次数: 0

Abstract

A series of novel complexes of titanium(IV) with OSSO-type ligands were synthesized. In the presence of Al/Mg activators such as {Et₂AlCl+Bu₂Mg} and {Et₃Al₂Cl₃+Bu₂Mg}, all the synthezed compounds catalyzed the polymerization of ethylene (with activity up to 2554 kg_PE mol_M^–1 h^–1 atm^–1). The otained ultrahigh-molecular-weight polyethylene (UHMWPE) samples had a molecular weight up to 7.6×10⁶ Da and exhibited high melting points (up to 143°C) and high crystallinity (up to 84%). It was demonstrated that these polymers can be processed by a solvent-free method into high-strength/high-modulus oriented films (with breaking strength up to 2.2 hPa and elastic modulus up to 127.7 hPa). The synthesized compounds further manifested themselves as efficient pre-catalysts (as indicated by their catalytic activity up to 408 kg_copolymer mol_M^–1 h^–1 atm^–1) for the preparation of ethylene–propylene copolymers with high propylene incorporation (up to 37%).

Abstract Image

查看原文本刊更多论文

具有 OSSO 型二元醇配体的 Ti(IV) 配合物作为催化剂合成超高分子量聚乙烯和乙烯-丙烯共聚物

摘要合成了一系列钛（IV）与 OSSO 型配体的新型配合物。在铝/镁活化剂（如{Et2AlCl+Bu2Mg}和{Et3Al2Cl3+Bu2Mg}）存在下，所有合成的化合物都能催化乙烯聚合（活性高达 2554 kgPE molM-1 h-1 atm-1）。得到的超高分子量聚乙烯（UHMWPE）样品的分子量高达 7.6×106 Da，具有高熔点（高达 143°C）和高结晶度（高达 84%）。实验证明，这些聚合物可通过无溶剂方法加工成高强度/高模量的拉伸薄膜（断裂强度高达 2.2 hPa，弹性模量高达 127.7 hPa）。合成的化合物还可作为高效的前催化剂（催化活性高达 408 kgcopolymer molM-1 h-1 atm-1），用于制备丙烯含量较高（高达 37%）的乙烯-丙烯共聚物。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Petroleum Chemistry 工程技术-工程：化工

CiteScore

2.50

自引率

21.40%

发文量

102

审稿时长

6-12 weeks

期刊介绍： Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas. Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.