Targeting polyethylene waxes: 9-(2-cycloalkylphenylimino)-5,6,7,8-tetrahydrocycloheptapyridylnickel halides and their use as catalysts for ethylene polymerization

Targeting polyethylene waxes: 9-(2-cycloalkylphenylimino)-5,6,7,8-tetrahydrocycloheptapyridylnickel halides and their use as catalysts for ethylene polymerization Full article

Journal

RSC Advances
ISSN: 2046-2069

Output data

Year: 2015, Volume: 5, Number: 95, Pages: 77913-77921 Pages count : DOI: 10.1039/c5ra15806k

Authors

Sun Zelin ^1,2,3 , Huang Fang ^2,3 , Qu Mengnan ¹ , Yue Erlin ^2,3 , Oleynik Irina V. ⁴ , Oleynik Ivan I. ⁴ , Zeng Yanning ^2,3 , Liang Tongling ^2,3 , Li Kanshe ¹ , Zhang Wenjuan ^2,3 , Sun Wen-Hua ^2,3

Affiliations

1	(Данные Web of science) Xian Univ Sci & Technol, Coll Chem & Chem Engn, Xian 710054, Peoples R China
2	(Данные Web of science) Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Beijing 100190, Peoples R China
3	(Данные Web of science) Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
4	(Данные Web of science) NN Vorozhtsov Novosibirsk Inst Organ Chem, Novosibirsk 630090, Russia

A series of 9-(2-cycloalkylphenylimino)-5,6,7,8-tetrahydrocycloheptapyridine derivatives (L1-L3) was synthesized, and reacted with nickel halides to form their corresponding nickel complexes (bromide: Ni1-Ni3; chloride: Ni4-Ni6). All organic compounds and nickel complexes were well characterized. The structure of a representative complex Ni1 was determined by a single crystal X-ray study, revealing a distorted trigonal bipyramidal geometry at the nickel centre. Upon activation with either modified methylaluminoxane (MMAO) or diethylaluminium chloride (Et2AlCl), all nickel complexes showed high activities toward ethylene polymerization. The obtained polymers were confirmed to be polyethylene waxes with low molecular weights (in the range of 1.83 to 6.78 kg mol(-1)) and narrow polydispersity (PDI: 1.38-1.78); moreover, the obtained polyethylenes were highly branched ones. These polyethylene waxes have potential application as functional adducts of lubricants or pour-point depressants.

Sun Z. , Huang F. , Qu M. , Yue E. , Oleynik I.V. , Oleynik I.I. , Zeng Y. , Liang T. , Li K. , Zhang W. , Sun W-H.
Targeting polyethylene waxes: 9-(2-cycloalkylphenylimino)-5,6,7,8-tetrahydrocycloheptapyridylnickel halides and their use as catalysts for ethylene polymerization
RSC Advances. 2015. V.5. N95. P.77913-77921. DOI: 10.1039/c5ra15806k WOS Scopus РИНЦ OpenAlex

Web of science:	WOS:000361559900052
Scopus:	2-s2.0-84942016670
Elibrary:	24950148
OpenAlex:	W1881619294

DB	Citing
Web of science	50
Scopus	45
Elibrary	43
OpenAlex	48