Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Kimmo Hakala"'
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 46:373-382
The influence of ligand structure on copolymerization properties of metallocene catalysts was elucidated with three C1-symmetric methylalumoxane (MAO) activated zirconocene dichlorides, ethylene(1-(7, 9)-diphenylcyclopenta-[a]-acenaphthadienyl-2-phen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bdf3ee8c2d322438c184f8c63ad2317
https://doi.org/10.1002/pola.22387
https://doi.org/10.1002/pola.22387
Autor:
Tiina Vanne, Kimmo Hakala, Barbro Löfgren, Tuulamari Helaja, Tapio Saarinen, Petri Lehmus, Antti Tynys
Publikováno v:
Macromolecular Chemistry and Physics. 206:1043-1056
Ethylene-propylene (EP) copolymerisations were performed with two sterically different metallocenes activated by methylaluminoxane (MAO) in an attempt to better understand the effect of catalyst structure on termination reactions and polymer microstr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c9b67462ee6d1752f2c1e6ca1f94a5c
https://doi.org/10.1002/macp.200400523
https://doi.org/10.1002/macp.200400523
Autor:
Kshama Motha, Maija Peltonen, Vuokko Ojanperä, Jukka Seppälä, Ulla Hippi, Kimmo Hakala, Barbro Löfgren
Publikováno v:
Journal of Applied Polymer Science. 94:1094-1100
This article reports a study of some functionalized polyolefins evaluated as compatibilizers in polyethylene nanocomposites. The functionalized polymers were prepared by direct metallocene-mediated copolymerizations of ethylene and a functional comon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fce08bf6429d415a4902abc4d77065d9
https://doi.org/10.1002/app.20977
https://doi.org/10.1002/app.20977
Publikováno v:
Polymer Bulletin. 46:123-130
Thirteen differently substituted long-chain amide- and amine-functional alkenes were synthesised and used as comonomers in zirconocene/methylaluminoxane-catalysed copolymerizations with ethylene and propylene. Characterization of the prepared copolym
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4dae207b034157d7a280334dd5ef278a
https://doi.org/10.1007/s002890170065
https://doi.org/10.1007/s002890170065
Autor:
Kimmo Hakala, Santeri Paavola, Anne-Marja Uusitalo, Minna Kröger-Laukkanen, Lauri Niinistö, Barbro Löfgren, Tuula T. Pakkanen
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 160:343-356
Heterogeneous metallocene catalysts were prepared by adsorbing rac -Et(Ind) 2 ZrCl 2 on a modified silica surface in solution. The modification of silica was conducted in gas phase with atomic layer chemical vapor deposition (ALCVD) technique, where
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8488a891fc69e6787c3f79dcfcc7031e
https://doi.org/10.1016/s1381-1169(00)00330-7
https://doi.org/10.1016/s1381-1169(00)00330-7
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 38:1966-1971
Copolymerizations of ethylene with 10-undecen-1-ol, 10-undecenyl methyl ether, 10-undecenyl trimethyl silyl ether, and 1-undecene were performed with rac-ethylene-bis(1-indenyl)zirconium dichloride as a catalyst and methylaluminoxane as a cocatalyst.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7715a67599c825e06576af971b12ec2c
https://doi.org/10.1002/(sici)1099-0518(20000601)38:11<1966::aid-pola50>3.0.co
https://doi.org/10.1002/(sici)1099-0518(20000601)38:11<1966::aid-pola50>3.0.co
Publikováno v:
Magnetic Resonance in Chemistry. 38:165-171
The reaction of tri-tert-butylcarbinol and oligomeric methylaluminoxane (MAO) prepared in toluene-d8 was studied by analysing the reaction mixture utilizing ROESY, HSQC and HMBC 2D NMR experiments. The formation of one main alkoxide was observed in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::452d02fd3a23c9dbaaa0d58f45450a89
https://doi.org/10.1002/(sici)1097-458x(200003)38:3<165::aid-mrc615>3.0.co
https://doi.org/10.1002/(sici)1097-458x(200003)38:3<165::aid-mrc615>3.0.co
Preparation and Characterization of MCM-41 Supported Metallocene Catalysts for Olefin Polymerization
Autor:
Tom Eklund, Kimmo Hakala, Hanna Rahiala, Régis D. Gougeon, Isabelle Beurroies, Jarl B. Rosenholm, Philippe Trens
Publikováno v:
Journal of Catalysis. 188:14-23
The effect of the structure and surface properties of support material on metallocene (zirconocene chloride) adsorption and catalyst activity in ethene polymerization was studied. Commercial Grace silica, mesoporous silicate, MCM-41, and aluminium-mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41dabec8e6d5b815167eee66c2c6f74d
https://doi.org/10.1006/jcat.1999.2657
https://doi.org/10.1006/jcat.1999.2657
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 37:3099-3108
Metallocene catalyst technology was utilized to prepare functionalized polyethylenes, which were used as compatibilizers in polyethylene/polyamide 6 (40/60) blends. Polymerization of ethylene with 10-undecen-1-ol, 10-undecenoic acid, or N-methyl-10-u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c84ecc709e64ea1814ae6324f0c0bf4
https://doi.org/10.1002/(sici)1099-0518(19990815)37:16<3099::aid-pola7>3.0.co
https://doi.org/10.1002/(sici)1099-0518(19990815)37:16<3099::aid-pola7>3.0.co
Publikováno v:
Journal of Organometallic Chemistry. 579:164-176
Reactions of hydroxyl, ether and carbonyl functionalized alkenes with methylaluminoxane prepared in toluene- d 8 (MAO) and zirconocenedichloride (Cp 2 ZrCl 2 ) were investigated by 1 H- and 13 C-NMR spectroscopy at 27°C. The 11 alkenes studied bear
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9338bd9712baec6d6fd6a41697de8425
https://doi.org/10.1016/s0022-328x(98)01219-4
https://doi.org/10.1016/s0022-328x(98)01219-4