On the topology of highly branched polyethylenes prepared by amine-imine nickel and palladium complexes: the effect of ortho-aryl substituents

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F18%3A43915556" target="_blank" >RIV/60461373:22310/18:43915556 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/full/10.1002/pi.5593" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/pi.5593</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/pi.5593" target="_blank" >10.1002/pi.5593</a>

Result language
angličtina
Original language name
On the topology of highly branched polyethylenes prepared by amine-imine nickel and palladium complexes: the effect of ortho-aryl substituents
Original language description
Series of nickel and palladium complexes bearing amine-imine ligands in various ortho-aryl and backbone positions were prepared and investigated in ethene polymerization. Ethene polymerization initiated by symmetrically ortho-substituted nickel and palladium amine-imine catalysts is controlled. Mono-substitution in the ortho-aryl positions of nickel complexes is not as efficient in protecting centers from chain transfer as di-substitution. Both the central metal and the size of the ortho-aryl substituent have a significant effect on the polyethylene (PE) topology. Based on detailed characterization by high temperature SEC-IR-, SEC with multi-angle laser light scattering and C-13 NMR data, PEs prepared by nickel amine-imine complexes have a linear rather than dendritic topology. In contrast, palladium amine-imine complexes with small ortho-aryl substituents at low ethene pressure were shown for the first time to form dendritic PEs with topology comparable to PEs formed by -diimine palladium catalyst. (c) 2018 Society of Chemical Industry
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science

Project
<a href="/en/project/GC15-15887J" target="_blank" >GC15-15887J: BRANCHING DESIGN IN POLYOLEFINS BY CATALYST VARIATION. THEORY MEETS EXPERIMENT.</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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