Journal
TOPICS IN CATALYSIS
Volume 57, Issue 10-13, Pages 918-922Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11244-014-0252-1
Keywords
Hafnium; Isospecific polymerization; 1-Hexene; Post-metallocene; Single-site catalyst; [OSSO]-Type ligand
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Funding
- Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan [23750034, 25410035]
- Asahi Glass Foundation
- JGC-S Scholarship Foundation
- Grants-in-Aid for Scientific Research [25410035] Funding Source: KAKEN
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In the presence of dried methylaluminoxane as an activator, the hafnium(IV) dichloro pre-catalyst 4 incorporating with an [OSSO]-type ligand was found to promote precisely isospecific 1-hexene polymerizations of [mmmm] up to 95 % with fairly high activities (1,050-3,180 g mmol(4)(-1) h(-1)) and relatively narrow polydispersities (M-w/M-n = 1.5-1.8).
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