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Concerted Steric and Electronic Strategy in Thermostable Salicylaldiminato Nickel Catalysts for Ethylene (Co)polymerization.
- Source :
- Chinese Journal of Polymer Science (Springer Science & Business Media B.V.); Aug2024, Vol. 42 Issue 8, p1085-1092, 8p
- Publication Year :
- 2024
-
Abstract
- Olefin polymerization is one of the most important chemical reactions in industry. This work presents a strategy that emphasizes the synergistic meta/para-steric hindrance of N-aryl groups and electronic effects in newly synthesized neutral salicylaldiminato nickel catalysts. These nickel(II) catalysts exhibit exceptional thermostability, ranging from 30 °C to 130 °C, demonstrating enhanced catalytic activities and broadly regulated polyethylene molecular weights (3–341 kg·mol<superscript>−1</superscript>) and controlled polymer branch density (2–102 brs/1000C). The preferred catalyst Ni3 with concerted steric and electronic effects enables the production of solid-state semi-crystalline polyethylene materials at temperatures below 90 °C. Notably, Ni3 exhibits an impressive tolerance of 110 °C and can withstand even the challenging polymerization temperature of 130 °C, leading to the production of polyethylene wax and oil. Also, functionalized polyethylene is produced. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02567679
- Volume :
- 42
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- Chinese Journal of Polymer Science (Springer Science & Business Media B.V.)
- Publication Type :
- Academic Journal
- Accession number :
- 179086619
- Full Text :
- https://doi.org/10.1007/s10118-024-3148-y