Polyhalogenated α-diimine nickel precatalysts

Thermostable high-yield toward elastomers

These nickel precatalysts, featuring ortho-chloro and para-fluoro substitutions, exhibit enhanced thermal stability and catalytic lifetime, enabling efficient production of polyethylene elastomers under mild conditions.

Ali Muhammad, Ashfaq · Zhang, Qiuyue · Wang, Yizhou · Ma, Yanping · Xing, Qifeng · Sun, Min · Liang, Tongling · Sun, Wenhua

Journal of Molecular Structure 2025

Specifications

polyethylene branching density

{'zh': '', 'en': '96'} branches/1000 C

Resulting polyethylene Mw

{'zh': '3.06×10⁵', 'en': '3.06×10⁵'} g mol⁻¹

所得聚乙烯弹性体拉伸强度最高

{'zh': '25.3', 'en': ''} MPa

弹性回复率最高

{'zh': '69', 'en': ''} %

Advantages

Ethylene polymerization activity up to 10⁷ g PE (mol Ni)⁻¹ h⁻¹ at 60 °C