Results 101 to 110 of about 902,813 (269)

The influence of long chain branches of LLDPE on processability and physical properties

open access: yesPolímeros, 2015
Two polyethylene-based on single-site metallocene catalyst (mLLDPE) were selected to characterize the effect of long chain branching (LCB) on blown film processability, optical and mechanical properties.
Paula Cristina Dartora   +2 more
doaj   +1 more source

Polyolefin–polar block copolymers from versatile new macromonomers [PDF]

open access: yes, 2018
A new metallocene-based polymerization mechanism is elucidated in which a zirconium hydride center inserts α-methylstyrene at the start of a polymer chain.
Burnett, Connah A.   +11 more
core   +2 more sources

Synthesis and characterization of phosphine substituted organometallic chalcones [PDF]

open access: yes, 2014
The current focus in organometallic chalcones is based upon their synthesis, eloectrochemical properties, diverse biological behavior and their facet towards a new field “bioorganometallics’’ concerning both organometallic and coordination chemistry ...
Betal, J
core  

Preparation of “Constrained Geometry” Titanium Complexes of [1,2]Azasilinane Framework for Ethylene/1-Octene Copolymerization

open access: yesMolecules, 2017
The Me2Si-bridged ansa-Cp/amido half-metallocene, [Me2Si(η5-Me4C5)(NtBu)]TiCl2, termed a “constrained-geometry catalyst (CGC)”, is a representative homogeneous Ziegler catalyst.
Seul Lee   +4 more
doaj   +1 more source

Synthesis and reactivity of new silyl substituted monocyclopentadienyl zirconium complexes. X-ray molecular structure of [Zr{η5-C5H4(SiMe2CH2Ph)}(CH2Ph)3] [PDF]

open access: yes, 1997
Synthesis and reactivity of new silyl substituted monocyclopentadienyl zirconium complexes. X-ray molecular structure of [Zr{η5-C5H4(SiMe2CH2Ph)}(CH2Ph)3]We are grateful to the DGICYT (Project PB-92-0178-C) and University of Alcalá for the financial ...
Ciruelo Monge, Gemma   +6 more
core   +3 more sources

Structure-property relations of heterophasic ethylene-propylene copolymers based on a single-site catalyst

open access: yeseXPRESS Polymer Letters, 2017
The target of the present study was to investigate the structure-property relationships of heterophasic ethylenepropylene (EP) copolymers based on a single-site (metallocene) catalyst (SSC) supported with an emulsion technology developed by Borealis. The
M. Aarnio-Winterhof   +3 more
doaj   +1 more source

Efficient Synthesis of Narrowly Dispersed Brush Polymers via Living Ring-Opening Metathesis Polymerization of Macromonomers [PDF]

open access: yes, 2009
Various macromonomers (MMs) were efficiently synthesized through the copper-catalyzed “click” coupling of a norbornene moiety to the chain end of poly(methylacrylate), poly(t-butylacrylate), and polystyrene that were prepared using atom transfer radical ...
Grubbs, Robert H.   +2 more
core   +1 more source

Reductant-Activated, High-Coverage, Covalent Functionalization of 1T′-MoS₂ [PDF]

open access: yes, 2020
Recently developed covalent functionalization chemistry for MoS₂ in the 1T′ phase enables the formation of covalent chalcogenide–carbon bonds from alkyl halides and aryl diazonium salts.
Brunschwig, Bruce S.   +4 more
core  

Effects Of Electron Beam Irradiation On The Mechanical Properties Of Ethylene Octene Copolymer, Polypropylene and Trimethylolpropane Triacrylate Blends [PDF]

open access: yes, 2005
The effect of electron beam irradiation on blends of ethylene-octene copolymer (EOC) and polypropylene (PP) with and without trimethylolpropane triacrylate (TMPTA) at various ratios was studied.
Raj Kumar, Harris C.
core  

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