Results 81 to 90 of about 600,060 (165)

Principais aspectos da polimerização do 1,3-butadieno Principles aspects of butadiene 1,3 polymerization

Polímeros, 2005
Atualmente, há uma grande demanda pelo polibutadieno com alto teor de unidades 1,4-cis, devido às suas excelentes propriedades físicas, tais como alta resistência à abrasão, baixo desenvolvimento de calor, baixa resistência ao rolamento, maior ...
Denise S. S. Nunes, Fernanda M. B. Coutinho, Ivana L. Mello   +2 more
doaj   +1 more source

Organic Nanoparticles as Fragmentable Support for Ziegler-Natta Catalysts

, 2015
A fragmentable support material for Ziegler-Natta catalysts is presented based on micrometer-sized aggregates of polystyrene nanoparticles. Hydroxyl anchoring groups are introduced by copolymerization of hydroxymethylstyrene in emulsion process to ...
Sven Nietzel, Alsaygh, A., Gerhard Fink, Joe, D., Nietzel, S., Frank Schellenberger, Schellenberger, F., Muellen, K., Abdulhamid A. Alsaygh, Joseph W. Krumpfer, Krumpfer, J., Markus Klapper, Fink, G., Daejune Joe, Klaus Müllen, Klapper, M., Müllen, K.   +16 more
core   +1 more source

Quality control for Ziegler-Natta catalysis via spectroscopic fingerprinting [PDF]

, 2018
Commercial olefin polymerization catalysts are typically produced at a manufacturing site before transport to production facilities for storage and eventual use.
Vantomme, Aurélien, Sub Inorganic Chemistry and Catalysis, Inorganic Chemistry and Catalysis, Pletcher, Paul, Welle, Alexandre, Weckhuysen, Bert M.   +5 more
core  

Polimerização 1,4 - cis de butadieno com o sistema catalítico tetracloreto de titânio/triisobutilalumínio/iodo 1,4 cis-Polymerization of butadiene by the catalyst system titanium tetrachloride/triisobutylaluminium/iodine

Polímeros, 2000
Foi utilizado o sistema catalítico tipo Ziegler-Natta modificado, constituído por TiCl4/I2/Al(i-Bu)3 para a síntese de polibutadieno com alto teor de unidades 1,4-cis.
Neusa M. T. Pires, Marcos A. S. Costa, Fernanda M. B. Coutinho   +2 more
doaj   +1 more source

Stereospecific Living Ziegler−Natta Polymerization of 1-Hexene

, 2016
Stereospecific Living Ziegler−Natta Polymerization of 1 ...
Kumudini C. Jayaratne (2443618), Lawrence R. Sita (1532260)   +1 more
core   +1 more source

MgO/MgCl_2/TiCl_4 Core-Shell Catalyst for Establishing Structure-Performance Relationship in Ziegler-Natta Olefin Polymerization [PDF]

, 2014
Recently we successfully established the first structure-performance relationships between the catalyst surface area and propylene polymerization activity using novel MgO/MgC_l2/TiCl_4 core-shell catalysts with non-porous and non-fragmentable features ...
Taniike, Toshiaki, Terano, Minoru, Chammingkwan, Patchanee, Thang, Vu Quoc   +3 more
core   +1 more source

Development of Ziegler-Natta catalysts for the synthesis of polyolefins

, 2022
reservedLo scopo di questa tesi è la visione dello sviluppo di catalizzatori Ziegler-Natta per la sintesi di olefine. Vedremo cos'è un catalizzatore e nello specifico uno di tipo Ziegler-Natta, considerando i suoi componenti, gli effetti che hanno, l ...
MARCELLAN, GIOVANNI
core  

Evaluation of the Reactivity of Methanol and Hydrogen Sulfide Residues with the Ziegler-Natta Catalyst during Polypropylene Synthesis and Its Effects on Polymer Properties. [PDF]

Polymers (Basel), 2023
Hernández-Fernández J, González-Cuello R, Ortega-Toro R.   +2 more
europepmc   +1 more source

DIENES POLYMERISATION WITH METATHESIS AND ZIEGLER-NATTA HOMOGENEOUS CATALYSTS

, 1991
IN THIS THESIS THE POLYMERISATION OF DIENES WITH ZIEGLER-NATTA AND METATHESIS CATALYSTS IS DESCRIBED AND THE RELATION BETWEEN THE TWO TYPES OF POLYMERISATION IS EXAMINED.
Μπόκαρης, Ευθύμιος
core   +1 more source

Genesis of MgCl2-based Ziegler-Natta Catalysts as Probed with Operando Spectroscopy [PDF]

, 2018
Ziegler‐Natta catalysts for olefin polymerization are intrinsically complex multi‐component systems. The genesis of the active sites involves several simultaneous and sequential steps, making the individual steps and interconnections difficult to be ...
Jongkind, Maarten K., Alessandro Piovano, Elena Groppo, Bert M. Weckhuysen, Pletcher, Paul, Maarten K. Jongkind, Bossers, Koen, Koen Bossers, Groppo, Elena, Velthoen, Marjolein E.Z., Paul Pletcher, Inorganic Chemistry and Catalysis, Sub Inorganic Chemistry and Catalysis, Marjolein E. Z. Velthoen, Piovano, Alessandro, Weckhuysen, Bert M., Chung, Sang Ho, Gianluca Fiore, Zanoni, Silvia, Fiore, Gianluca, Silvia Zanoni, Sang‐Ho Chung   +21 more
core   +1 more source