Loading...
Please wait, while we are loading the content...
Similar Documents
Ortho-Functionalized Dibenzhydryl Substituents in α-Diimine Pd Catalyzed Ethylene Polymerization and Copolymerization
| Content Provider | MDPI |
|---|---|
| Author | Muhammad, Qasim Pang, Wenmin Wang, Fuzhou Tan, Chen |
| Copyright Year | 2020 |
| Description | Sterically bulky diarylmethyl-based ligands have received increasing attention in the field of late-transition-metal catalyzed olefin polymerization. Ortho-substituents may have a significant impact on the performance of diarylmethyl-based α-diimine Pd catalysts. In this contribution, a series of α-diimine Pd catalysts bearing ortho-methoxyl/hydroxyl functionalized dibenzhydryl units were prepared, characterized, and investigated in ethylene polymerization and copolymerization with methyl acrylate (MA). The catalytic performances were improved by introducing more ortho-substituents. The catalysts exhibited good thermal stabilities at high temperatures, producing branched polyethylenes. The catalysts bearing hydroxyl groups possessing intramolecular H-bonding, resulted in slightly higher incorporation ratios of MA unit when compared with the catalysts bearing methoxyl groups. |
| Starting Page | 2509 |
| e-ISSN | 20734360 |
| DOI | 10.3390/polym12112509 |
| Journal | Polymers |
| Issue Number | 11 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-10-28 |
| Access Restriction | Open |
| Subject Keyword | Polymers Polymer Science Olefin Polymerization Α-diimine Polar Monomer Palladium Dibenzhydryl |
| Content Type | Text |
| Resource Type | Article |
