About: Living polymerization of olefins initiated by nickel catalysts

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Nickel diimine complexes have recently been shown as efficient catalyst for olefin polymerization. Besides, polymerization of higher a-olefins initiated by some nickel catalysts proceeds in living-like fashion, i.e. without noticeable transfer and termination. This contribution reports for the first time on living-like polymerization of olefins initiated by several others diimine complexes of nickel. Further, unusual kinetics of these systems is observed revealing decrease of propagation rate constant values with increase of initial monomer concentration. This behavior can be correlated with suggested mechanism, which includes competition between isomerization (chain walking) and propagation reaction, and is documented by changes in polymer microstructure. Nickel diimine complexes have recently been shown as efficient catalyst for olefin polymerization. Besides, polymerization of higher a-olefins initiated by some nickel catalysts proceeds in living-like fashion, i.e. without noticeable transfer and termination. This contribution reports for the first time on living-like polymerization of olefins initiated by several others diimine complexes of nickel. Further, unusual kinetics of these systems is observed revealing decrease of propagation rate constant values with increase of initial monomer concentration. This behavior can be correlated with suggested mechanism, which includes competition between isomerization (chain walking) and propagation reaction, and is documented by changes in polymer microstructure. (en) Nickel diimine complexes have recently been shown as efficient catalyst for olefin polymerization. Besides, polymerization of higher a-olefins initiated by some nickel catalysts proceeds in living-like fashion, i.e. without noticeable transfer and termination. This contribution reports for the first time on living-like polymerization of olefins initiated by several others diimine complexes of nickel. Further, unusual kinetics of these systems is observed revealing decrease of propagation rate constant values with increase of initial monomer concentration. This behavior can be correlated with suggested mechanism, which includes competition between isomerization (chain walking) and propagation reaction, and is documented by changes in polymer microstructure. (cs)
Title	Living polymerization of olefins initiated by nickel catalysts Living polymerization of olefins initiated by nickel catalysts (cs) Živá polymerace alkenů iniciovaná niklovými katalyzátory (en)
skos:prefLabel	Living polymerization of olefins initiated by nickel catalysts Living polymerization of olefins initiated by nickel catalysts (cs) Živá polymerace alkenů iniciovaná niklovými katalyzátory (en)
skos:notation	RIV/00216305:26310/05:PU53047!RIV07-MSM-26310___
http://linked.open.../vavai/riv/strany	373-376
http://linked.open...avai/riv/aktivita	S
http://linked.open...avai/riv/aktivity	S
http://linked.open...iv/cisloPeriodika	symposia
http://linked.open...vai/riv/dodaniDat	2007
http://linked.open...aciTvurceVysledku	Kučera, Miloslav Hermanová, Soňa Merna, Jan Cihlář, Jaroslav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoké učení technické v Brně / Fakulta chemická
http://linked.open...dnocenehoVysledku	528283
http://linked.open...ai/riv/idVysledku	RIV/00216305:26310/05:PU53047
http://linked.open...riv/jazykVysledku	cze - čeština
http://linked.open.../riv/klicovaSlova	nickel olefins polymerization living (en)
http://linked.open.../riv/klicoveSlovo	nickel olefins polymerization living
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[5FE7A4ACFF29]
http://linked.open...i/riv/nazevZdroje	Chemické Listy
http://linked.open...in/vavai/riv/obor	CD
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...UplatneniVysledku	2005
http://linked.open...v/svazekPeriodika	99
http://linked.open...iv/tvurceVysledku	Hermanová, Soňa Merna, Jan Cihlář, Jaroslav Kučera, Miloslav
issn	0009-2770
number of pages	4 (xsd:int)
http://localhost/t...ganizacniJednotka	26310
is http://linked.open...avai/riv/vysledek of	Living polymerization of olefins initiated by nickel catalysts

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