Results 41 to 50 of about 126,961 (81)

Living Ziegler−Natta Cyclopolymerization of Nonconjugated Dienes:  New Classes of Microphase-Separated Polyolefin Block Copolymers via a Tandem Polymerization/Cyclopolymerization Strategy

, 2016
Living Ziegler−Natta Cyclopolymerization of Nonconjugated Dienes:  New Classes of Microphase-Separated Polyolefin Block Copolymers via a Tandem Polymerization/Cyclopolymerization ...
Kumudini C. Jayaratne (2443618), Lawrence R. Sita (1532260), David A. Henningsen (2982693), Richard J. Keaton (2504707)   +3 more
core   +2 more sources

Dimerization of 1-butene via zirconium-based Ziegler-Natta catalyst

, 2000
A zirconium-based Ziegler-Natta catalytic system has been tested in the dimerization of 1-butene. It was found that the concentration of Et2AlCl, Ph3P and PhONa as well as the reaction temperature had great influences on the activity and selectivity of ...
Han, XW, Zhang, WP, He, R, Bao, XH, Li, C   +4 more
core  

Synthesis of polyethylene/exfoliated MoS₂ nanocomposites by in situ exfoliation polymerization using Ziegler–Natta catalyst intercalated MoS₂

, 2017
A new synthetic route for polyethylene (PE)/exfoliated MoS2 (EMoS2) nanocomposites using novel Ziegler–Natta catalyst intercalated MoS2 was designed.
He-Xin Zhang, Keun-Byoung Yoon, Hao Zhang   +2 more
core   +1 more source

Obtencao de polietileno linear de baixa densidade utilizando catalisadores ziegler-natta homogeneos e 1-hexeno como comonomero

, 2011
A homopolimerização de etileno e sua copolimerização com 1-hexeno foram investigadas utilizando-se os catalisadores liegler-Natta homogêneos Et[Ind]2ZrCl2 [Ind]2ZrCl2, Cp2ZrCl2 e Me2SiCpZrCl2. Os catalisadores Me2SiCpZrCl2 e Et[Ind]2ZrCl2 apresentaram maior atividade catalítica na homopolimerização de etileno e mostraramse mais sensíveis à influência ...
Scipioni, Rosangela Breda, Mauler, Raquel Santos, Galland, Griselda Ligia Barrera, Quijada, Raul   +3 more
openaire   +1 more source

Generation of Homogeneous (sp³-C₁)-Bridged Cp/Amido and Cp/Phosphido Group 4 Metal Ziegler−Natta Catalyst Systems

, 2016
Generation of Homogeneous (sp3-C1)-Bridged Cp/Amido and Cp/Phosphido Group 4 Metal Ziegler−Natta Catalyst ...
Klaus Kunz (2720305), Gerhard Erker (1443580), Steve Döring (2720311), Roland Fröhlich (2430502), Gerald Kehr (1443583)   +4 more
core   +1 more source

CATALIZADORES Ziegler-Natta utilizados para polimerizar propileno y etileno [PDF]

, 1987
A 35 años de su descubrimiento, la polimerización del propileno y etileno es hoy en día uno de los mayores procesos industriales. Se comienza con una breve reseña histórica, para luego resaltar las estructuras, propiedades y usos del polipropileno y ...
Castro, Carlos A., Eguren, Liliana, Korswagen, Richard P   +2 more
core   +1 more source

The blocky structure of Ziegler-Natta "random" copolymers: Myths and experimental evidence

, 2020
The crystallization behavior of butene-ethylene random isotactic copolymers prepared with a Ziegler-Natta catalyst, in particular the surprising crystallization of form II of isotactic polybutene in samples with a high ethylene concentration, provides ...
De Rosa C., Malafronte A., Di Girolamo R., Auriemma F., Talarico G., Scoti M., Ruiz De Ballesteros O.   +6 more
core   +1 more source

Direct Observation of the Structural Isomerization of a Cationic Group 4 Ziegler−Natta Insertion Product

, 2016
An experimental model that allows for direct observation of a structural isomerization that is relevant to the group 4 metal-mediated Ziegler−Natta polymerization of α-olefins is presented.
Lawrence R. Sita (1532260), Richard J. Keaton (2504707)   +1 more
core   +1 more source

Dramatic Enhancement of Activities for Living Ziegler−Natta Polymerizations Mediated by “Exposed” Zirconium Acetamidinate Initiators:  The Isospecific Living Polymerization of Vinylcyclohexane

, 2016
Dramatic Enhancement of Activities for Living Ziegler−Natta Polymerizations Mediated by “Exposed” Zirconium Acetamidinate Initiators:  The Isospecific Living Polymerization of ...
Kumudini C. Jayaratne (2443618), Lisa A. Koterwas (2984184), Lawrence R. Sita (1532260), David A. Henningsen (2982693), Richard J. Keaton (2504707)   +4 more
core   +1 more source

Catalisadores De Ziegler-natta Suportados Em Oxidos Modificados,processo Para Sua Preparacao E Processo De Polimerizacao De Olefinas

, 1992
Patente de invenção: “CATALISADORES DE ZIEGLER-NATTA SUPORTADOS EM ÓXIDOS MODIFICADOS, PROCESSO PARA SUA PREPARAÇÃO E PROCESSO DE POLIMERIZAÇÃO DE OLEFINAS”. A presente invenção trata de catalisadores de Ziegler-Natta suportados em óxidos modificados, do
Joekes Ines, Jerico Soraya, Nobre Marcos Antonio, Schuchardt Ulf Friedreich   +3 more
core