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Xue M, Luo Y, Ren S, Li T, You Q, Xie G. Phenyl-bridged bis-salicylaldiminato binuclear titanium complexes for ethylene (co)polymerization. JOURNAL OF POLYMER RESEARCH 2023. [DOI: 10.1007/s10965-022-03410-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Qin Y, Li T, Chen X, Li J, Meng X, You Q, Xie G. Asymmetric bis-salicylaldiminato binuclear titanium complexes for ethylene polymerization and copolymerization. NEW J CHEM 2021. [DOI: 10.1039/d1nj01049b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Asymmetric binuclear Ti complexes were synthesized, which exhibited excellent activity for ethylene homopolymerization and copolymerization with 1-hexene or norbornene and high comonomer insertion efficiency under MMAO activation.
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Affiliation(s)
- Yawen Qin
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
| | - Tingcheng Li
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
| | - Xiong Chen
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
| | - Jian Li
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
| | - Xiang Meng
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
| | - Qingliang You
- Key Laboratory of Optoelectronic Chemical Materials and Devices
- Ministry of Education
- School of Chemical and Environmental Engineering
- Jianghan University
- Wuhan 430056
| | - Guangyong Xie
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
- Hubei Engineering Technology Research Centre of Energy Polymer Materials
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3
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Binuclear titanium complexes coordinated by rigid
p
‐phenylene linked bis‐β‐carbonylenamine: Synthesis, structure, ethylene polymerization and copolymerization with 1,5‐hexadiene. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5772] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4
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Shi D, Li L, Wen Y, Yang Q, Duan Z. Ring‐opening copolymerization of epoxycyclohexane and phthalic anhydride catalyzed by the asymmetric Salen‐CrCl complex. POLYM INT 2020. [DOI: 10.1002/pi.5985] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Dapeng Shi
- School of Chemical Engineering and TechnologyHebei University of Technology Tianjin China
| | - Limei Li
- School of Chemical Engineering and TechnologyHebei University of Technology Tianjin China
| | - Yuqing Wen
- School of Chemical Engineering and TechnologyHebei University of Technology Tianjin China
| | - Qiusheng Yang
- School of Chemical Engineering and TechnologyHebei University of Technology Tianjin China
- Tianjin Key Laboratory of Chemical Process SafetyHebei University of Technology Tianjin China
| | - Zhongyu Duan
- School of Chemical Engineering and TechnologyHebei University of Technology Tianjin China
- Tianjin Key Laboratory of Chemical Process SafetyHebei University of Technology Tianjin China
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Huang J, Xu Y, Wang M, Duan Z. Copolymerization of propylene oxide and CO 2 catalyzed by dinuclear salcy–CoCl complex. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2019. [DOI: 10.1080/10601325.2019.1674158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Jie Huang
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
| | - Yunpeng Xu
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
| | - Meige Wang
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
| | - Zhongyu Duan
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
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Luo Y, Li J, Luo D, You Q, Yang Z, Li T, Li X, Xie G. Methylene-Bridged Tridentate Salicylaldiminato Binuclear Titanium Complexes as Copolymerization Catalysts for the Preparation of LLDPE through [Fe]/[Ti] Tandem Catalysis. Polymers (Basel) 2019; 11:E1114. [PMID: 31266198 PMCID: PMC6681003 DOI: 10.3390/polym11071114] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/06/2019] [Accepted: 06/11/2019] [Indexed: 02/03/2023] Open
Abstract
A novel tandem catalysis system consisted of salicylaldiminato binuclear/mononuclear titanium and 2,6-bis(imino)pyridyl iron complexes was developed to catalyze ethylene in-situ copolymerization. Linear low-density polyethylene (LLDPE) with varying molecular weight and branching degree was successfully prepared with ethylene as the sole monomer feed. The polymerization conditions, including the reaction temperature, the Fi/Ti molar ratio, and the structures of bi- or mononuclear Ti complexes were found to greatly influence the catalytic performances and the properties of obtained polymers. The polymers were characterized by differential scanning calorimetry (DSC), high temperature gel permeation chromatography (GPC) and high temperature 13C NMR spectroscopy, and found to contain ethyl, butyl, as well as some longer branches. The binuclear titanium complexes demonstrated excellent catalytic activity (up to 8.95 × 106 g/molTi·h·atm) and showed a strong positive comonomer effect when combined with the bisiminopyridyl Fe complex. The branching degree can be tuned from 2.53 to 22.89/1000C by changing the reaction conditions or using different copolymerization pre-catalysts. The melting points, crystallinity and molecular weights of the products can also be modified accordingly. The binuclear complex Ti2L1 with methylthio sidearm showed higher capability for comonomer incorporation and produced polymers with higher branching degree and much higher molecular weight compared with the mononuclear analogue.
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Affiliation(s)
- Yani Luo
- Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Jian Li
- Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Derong Luo
- Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Qingliang You
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China
| | - Zifeng Yang
- Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Tingcheng Li
- Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Xiandan Li
- Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Guangyong Xie
- Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China.
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China.
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