Results 31 to 40 of about 2,112 (213)

Introdução de catalisadores metalocênicos como estratégia competitiva da indústria de termoplásticos The introduction of metallocene catalysts as a competitive strategy of the thermoplastic industry

Polímeros, 1997
Recentes inovações tecnológicas no setor de polímeros levaram a novos catalisadores que poderão mudar a estrutura de toda a indústria. É feita uma análise das estratégias competitivas adotadas pelas empresas do setor e do impacto que a adoção dos ...
Francisco A. Ribeiro Fº, Maria José S. Ferreira Netto, Carlos A. Hemais   +2 more
doaj   +1 more source

Correction to “Correlating the Morphological Evolution of Individual Catalyst Particles to the Kinetic Behavior of Metallocene-Based Ethylene Polymerization Catalysts”

JACS Au, 2023
Correction to “Correlating the Morphological Evolution of Individual Catalyst Particles to the Kinetic Behavior of Metallocene-Based Ethylene Polymerization ...
Maximilian J. Werny, Jelena Zarupski, Iris C. ten Have, Alessandro Piovano, Coen Hendriksen, Nicolaas H. Friederichs, Florian Meirer, Elena C. Groppo, Bert M. Weckhuysen   +8 more
doaj   +2 more sources

Catalisadores metalocênicos suportados para a produção de poliolefinas: revisão das estratégias de imobilização

Química Nova, 2011
The inadequacy of strategies used for the heterogeneization of metallocene catalysts is pointed out as one of the main causes of the lack of industrial employability of such polymerization catalysts.
Adriano G. Fisch, Nilo S. M. Cardozo, Argimiro R. Secchi, João H. Z. dos Santos   +3 more
doaj   +1 more source

Modification of ethylene-norbornene copolymer by Gamma irradiation [PDF]

Hemijska Industrija, 2006
The possibility of modifying polyethylene and many other polymers with high energy radiation has led to many useful applications. Due to their new combination of properties and the shortage of experimental data, the radiolysis of a new class of materials,
Kačarević-Popović Zorica M., Šećerov Bojana, Marinović-Cincović Milena T., Nedić Zoran, Jovanović Slobodan M.   +4 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, Takehiro Sagae, Takashi Atsumi, Hideshi Uchino, Masahide Murata, Tsutomu Sato   +5 more
doaj   +1 more source

Estudo da preparação do catalisador Cp2ZrCl2 suportado em sílica utilizando um planejamento de experimentos Preparation conditions of Cp2ZrCl2 supported on silica using an experimental planning

Polímeros, 2001
O monômero eteno foi polimerizado através dos sistemas catalíticos Cp2ZrCl2/SiO2 e Cp2ZrCl2/MAO/SiO2. Foi elaborado um planejamento estatístico de experimentos a fim de se identificar as melhores condições de preparo dos catalisadores heterogêneos.
Anunciata Conte, Maria de Fátima V. Marques   +1 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

ANSA-bridged and binuclear metallocene compounds of zirconium and hafnium

, 1994
This thesis describes the synthesis and characterisation of new mononuclear and binuclear zirconium and hafnium compounds containing ansa-bridged ligands.
Diamond, Gary M.
core   +2 more sources

Comparison of Support Effects on Phillips and Metallocene Catalysts

, 2021
Both metallocene and Phillips chromium catalysts are used in the commercial manufacture of polyethylene. Unlike most other commercial metallocene systems, the Chevron Phillips Chemical (CPC) platform does not use methylaluminoxane or fluoroorganic ...
Qing Yang, Max Paul McDaniel
core   +1 more source

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

eXPRESS 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, P. Doshev, J. Seppala, M. Gahleitner   +3 more
doaj   +1 more source