alpha-keto-beta-diimine nickel-catalyzed olefin polymerization: Effect of ortho-aryl substituents and preparation of stereoblock copolymers

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43913689" target="_blank" >RIV/60461373:22310/17:43913689 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/17:10361117
Result on the web
<a href="http://onlinelibrary.wiley.com/doi/10.1002/pola.28206/full" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1002/pola.28206/full</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/pola.28631" target="_blank" >10.1002/pola.28631</a>

Result language
angličtina
Original language name
alpha-keto-beta-diimine nickel-catalyzed olefin polymerization: Effect of ortho-aryl substituents and preparation of stereoblock copolymers
Original language description
A series of -keto--diimine nickel complexes (Ar-N=C(CH3)-C(O)-C(CH3)=N-Ar)NiBr2; Ar=2,6-R-C6H3-, R=Me, Et, iPr, and Ar=2,4,6-Me-3-C6H3-) was prepared. All corresponding ligands are unstable even under an inert atmosphere and in a freezer. Stable copper complex intermediates of ligand synthesis and ethyl substituted nickel complex were isolated and characterized by X-ray. All nickel complexes were used for the polymerization of ethene, propylene, and hex-1-ene to investigate their livingness and the extent of chain-walking. Low-temperature propene polymerization with less bulky ortho-substituents was less isospecific than the one with isopropyl derivative. Propene stereoblock copolymers were prepared by iPr derivative combining the polymerization at low temperature to prepare isotactic polypropylene (PP) block and at a higher temperature, supporting chain-walking, to obtain amorphous regioirregular PP block. Alternatively, a copolymerization of propene with ethene was used for the preparation of amorphous block. (c) 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 2440-2449
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
—
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
S - Specificky vyzkum na vysokych skolach

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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