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Statements

Subject Item
n2:RIV%2F00216305%3A26310%2F05%3APU53047%21RIV07-MSM-26310___
rdf:type
n11:Vysledek skos:Concept
dcterms: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. 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.
dcterms:title
Živá polymerace alkenů iniciovaná niklovými katalyzátory Living polymerization of olefins initiated by nickel catalysts Living polymerization of olefins initiated by nickel catalysts
skos:prefLabel
Living polymerization of olefins initiated by nickel catalysts Living polymerization of olefins initiated by nickel catalysts Živá polymerace alkenů iniciovaná niklovými katalyzátory
skos:notation
RIV/00216305:26310/05:PU53047!RIV07-MSM-26310___
n4:strany
373-376
n4:aktivita
n13:S
n4:aktivity
S
n4:cisloPeriodika
symposia
n4:dodaniDat
n16:2007
n4:domaciTvurceVysledku
n12:7236824 n12:6338879 n12:7453434 n12:1662198
n4:druhVysledku
n14:J
n4:duvernostUdaju
n9:S
n4:entitaPredkladatele
n15:predkladatel
n4:idSjednocenehoVysledku
528283
n4:idVysledku
RIV/00216305:26310/05:PU53047
n4:jazykVysledku
n5:cze
n4:klicovaSlova
nickel olefins polymerization living
n4:klicoveSlovo
n17:nickel%20olefins%20polymerization%20living
n4:kodStatuVydavatele
CZ - Česká republika
n4:kontrolniKodProRIV
[5FE7A4ACFF29]
n4:nazevZdroje
Chemické Listy
n4:obor
n10:CD
n4:pocetDomacichTvurcuVysledku
4
n4:pocetTvurcuVysledku
4
n4:rokUplatneniVysledku
n16:2005
n4:svazekPeriodika
99
n4:tvurceVysledku
Hermanová, Soňa Kučera, Miloslav Merna, Jan Cihlář, Jaroslav
s:issn
0009-2770
s:numberOfPages
4
n7:organizacniJednotka
26310