Results 41 to 50 of about 6,733 (215)
Copolymerization of Ethylene and Propylene Using 4th Generation Ziegler- Natta Catalyst: Influence of Cocatalyst, External Electron Donor and Hydrogen [PDF]
علوم و تکنولوژی پلیمر, 2007 Copolymerization of ethylene and propylene was investigated using a 4th generation phthalate Ziegler-Natta catalyst in normal hexane in a Buchi reactor.
R. Mehtarani +4 more
doaj +1 more source
Gas phase polymerization of ethylene with a silica-supported metallocene catalyst: influence of temperature on deactivation [PDF]
, 1997 Ethylene was polymerized at 5 bar in a stirred powder bed reactor with silica supported rac-Me2Si[Ind]2ZrCl2/methylaluminoxane (MAO) at temperatures between 40°C and 80°C using NaCl as support bed and triethylaluminium (TEA) as a scavenger for impurities.
Meier, G.B. +5 more
core +2 more sources
Microscopy Research and Technique, EarlyView.SEM–EDX and XRD characterization confirm that pouches made from readily available aluminum foil, used in combination with a commercial cryo‐EM transfer system, effectively protect highly atmosphere‐sensitive and/or hygroscopic materials from contamination during transfer from inert environments to the SEM vacuum chamber.
Louis G. Corcoran +8 more
wiley +1 more source
Ultrasound- and microwave-assisted preparation of lead-free palladium catalysts: effects on the kinetics of diphenylacetylene semi-hydrogenation [PDF]
, 2015 The effect of environmentally benign enabling technologies such as ultrasound and microwaves on the preparation of the lead-free Pd catalyst has been studied.
Bonrath, Werner +6 more
core +1 more source
Dimethylformamide Impurities as Propylene Polymerization Inhibito [PDF]
, 2023 This research study examined how the use of dimethylformamide (DMF) as an inhibitor af fects the propylene polymerization process when using a Ziegler–Natta catalyst.
González-Cuello, Rafael +2 more
core +1 more source
Olefin Polymerizations Oriented by Rational Designs of Group‐13 Compounds
The Chemical Record, EarlyView.In coordination olefin polymerization chemistry, boron and aluminum compounds play important roles in both catalyst components and monomers. This personal account introduces our recent progress on the development of catalyst systems featured by the design of group‐13 counteranions, as well as the application of boronic acid‐crosslinked polyolefins to ...
Ryo Tanaka, Yu Zou
wiley +1 more source
Journal of Applied Polymer Science, Volume 143, Issue 3, January 15, 2026.Standardized protocol for reducing T m standard deviation. ABSTRACT Differential scanning calorimetry (DSC) serves as a critical analytical tool in the polyolefin industry for quality control and product differentiation. Between 2000 and 2025, 7574 global patent applications referenced DSC data, highlighting its ubiquitous role in the industry.
Xingxing Zhang +7 more
wiley +1 more source
Polímeros, 2005 Os polietilenos lineares de baixa densidade (LLDPE) apresentam propriedades variando amplamente em função da concentração e do tipo de comonômero utilizado na copolimerização, além do tipo de catalisador.
Antonio C. Quental +2 more
doaj +1 more source
A Silicon-Bridged Bis(substituted Cp) Yttrium Complex [PDF]
, 1992 rac-Bis(tetrahydrofuran)lithium [bis(2-trimethylsilyl-4-tert-butyl-η^5-cyclopentadienyl)dimethylsilane] dichloroyttrate, [Li(C_4H_80)_2][Y(C_(26)H_(48)-Si_3)Cl_2], M_r= 755.87, triclinic, Pl, ɑ = 13.110 (8), b = 17.163 (15), c = 20.623 (14) Å, ɑ= 104.02 (
Bercaw, John E. +3 more
core +1 more source