Results 41 to 50 of about 1,886 (220)
Advances in Materials Science and Engineering, 2018 The influence of multiwalled carbon nanotubes (MWCNTs) on the properties of polyethylene prepared by in situ polymerization using metallocene catalyst (Cp2ZrCl2) in combination with methylaluminoxane has been studied.
Mamdouh A. Al-Harthi +1 more
doaj +1 more source
Engineering, 2023 Olefin solution polymerization can be used to obtain high-performance polyolefin materials that cannot be obtained via other polymerization processes. Polyolefin elastomers (POE) are a typical example.
Changjiang Wu +7 more
doaj +1 more source
Polyolefin Synthesis by Metallocene Catalysts.
Kobunshi, 1993 メタロセン触媒は,ポリオレフィンの世界を変革する技術として注目を集めている.ここでは,メタロセン触媒によるポリプロピレン,ポリエチレン,ポリスチレン等のポリオレフィンの高性能化,シクロオレフィン,ジエン,極性モノマーを使った新規ポリオレフィン開発の可能性について紹介する.
Sasaki, Toshio, Johoji, Hirofumi
openaire +2 more sources
Molecules, 2011 This research aimed to investigate the copolymerization of ethylene and various 1-olefins. The comonomer lengths were varied from 1-hexene (1-C6) up to 1-octadecene (1-C18) in order to study the effect of comonomer chain length on the activity and ...
Mingkwan Wannaborworn +2 more
doaj +1 more source
Morphology control of clay-mineral particles as supports for metallocene catalysts in propylene polymerization [PDF]
Polyolefins Journal, 2016 Spray dry granulation of clay minerals was studied to obtain clay mineral base support material for metallocene supported olefin polymerization catalysts.
Takao Tayano +5 more
doaj +1 more source
Investigations on ternary metallocene-based catalyst systems
, 2002 The influence of the cocatalyst triisobutyl aluminium (TiBA) on the two step reaction of the ternary activation of the metallocene precursor Ph2C(CpFlu)ZrCl2 with TiBA and the activator N,N-dimethylanilinium-tetrakis(pentafluorophenyl)borat (DMAB) was ...
Götz, Christian +2 more
core +2 more sources
Molecules, 2005 Activities during ethylene/1-hexene copolymerization were found to increaseusing the mixed titania/silica-supported MAO with rac-Et[Ind]2ZrCl2 metallocenecatalyst. Energy Dispersive X-ray spectorcopy (EDX) indicated that the titania wasapparently located
P. Praserthdam +2 more
doaj +1 more source
Reactivity and immobiliztion of group IV single-center olefin polyerization catalysts [PDF]
, 2010 A large fraction of the commercially manufactured crystalline polyolefins are produced in large-scale slurry and gas-phase processes, which require the polymerization catalyst to be anchored on a solid support to obtain a satisfactory product morphology.
Novarino, Elena,, Novarino, Elena
core
Metallocene-catalyzed ethene polymerization : long-chain branched polyethene [PDF]
, 2002 Long-chain branches and narrow molecular weight distribution is a novel structure combination in polyethene, which has only been possible to achieve with single-center catalysis.
Kokko, Esa
core
Deprotonative C(sp3)/C(sp2)–H (Multi)Silylation of (Hetero)Arenes Mediated by NaTMP
Angewandte Chemie, Volume 138, Issue 21, 18 May 2026.An operationally simple protocol using a strongly basic sodium amide in combination with sterically emcumbered silicon electrophiles enables the deprotonative C–H (multi)silylation of a myriad of (hetero)arenes. Mechanistic investigations highlight the pivotal role of steric and coordination effects in controlling the regioselectivity and efficiency of
David Sánchez‐Roa +6 more
wiley +2 more sources