Results 1 to 10 of about 26,394 (242)

A general strategy for heterogenizing olefin polymerization catalysts and the synthesis of polyolefins and composites [PDF]

open access: yesNature Communications, 2022
The heterogenization of homogeneous metal complexes on solid supports has a series of drawbacks that restrict their implementation in olefin polymerization, particularly for copolymerization with polar comonomers. Here the authors show an ionic anchoring
Chen Zou, Guifu Si, Changle Chen
doaj   +2 more sources

Atomistic simulation of olefin polymerization reaction by organometallic catalyst: significant role of microscopic structural dynamics of (pyridylamido) Hf(IV) complex in catalytic reactivity [PDF]

open access: yesFrontiers in Chemistry
Understanding the microscopic catalytic mechanism of the olefin polymerization reaction is crucial for the rational design of next-generation catalysts.
Kentaro Matsumoto   +6 more
doaj   +2 more sources

Active site nature of magnesium dichloride-supported titanocene catalysts in olefin polymerization [PDF]

open access: greenPolyolefins Journal, 2015
Heterogeneous Ziegler-Natta and homogeneous metallocene catalysts exhibit greatly different active sitenature in olefin polymerization. In our previous study, it was reported that MgCl2-supported titanocenecatalysts can generate both Ziegler-Natta-type ...
Toshiaki Taniike   +2 more
doaj   +2 more sources

Preparation of Pincer Hafnium Complexes for Olefin Polymerization [PDF]

open access: yesMolecules, 2019
Pincer-type [Cnaphthyl, Npyridine, Namido]HfMe2 complex is a flagship among the post-metallocene catalysts. In this work, various pincer-type Hf-complexes were prepared for olefin polymerization.
Su Jin Kwon   +8 more
doaj   +2 more sources

Olefin polymerization catalysts

open access: diamondPolimery, 2002
Polyolefins, which are products of polymerisation of unsaturated hydrocarbons of the olefin series, have a molecular weight in the range from several thousands to several millions. Depending on the type of monomer and method and mechanism of polymerisation the resulting polyolefins may differ in their structure and molecular weight. They can be used in
Maria Nowakowska
openaire   +2 more sources

Octahedral Zirconium Salan Catalysts for Olefin Polymerization: Substituent and Solvent Effects on Structure and Dynamics. [PDF]

open access: hybridInorg Chem, 2023
Dall'Anese A   +11 more
europepmc   +2 more sources

Accelerated crystallization and crystal-crystal transition of PB induced by PP with optimized content

open access: yesPolymer Testing, 2023
Isotactic polybutene-1 (PB)/isotactic polypropylene (PP) blends, typical crystalline/crystalline polymer blends with low-melting-temperature (Tm) PB and high-Tm PP, exhibit complicated interactions between their components in both molten and solid states.
Xiangjie Yan   +5 more
doaj   +1 more source

An improved method for the high isotacticity measurement of polybutene-1

open access: yesPolymer Testing, 2021
High isotactic polybutene-1 (HiPB) plays important roles in presenting outstanding resistance to creep and crack at high temperature. Therefore, rapid and accurate measurement of the HiPB is extremely important for both synthesis and application of ...
Weiping Zheng   +4 more
doaj   +1 more source

High-temperature creep behaviors of polybutene-1 with different chain microstructure and molecular weight

open access: yesPolymer Testing, 2023
The creep resistance of polymer determines the dimensional stability of product under stress. The isotactic polybutene-1 (iPB) with outstanding high-temperature creep resistance and stress-crack resistance is applied widely in the field of hot-water ...
Yuanjin Zhao   +3 more
doaj   +1 more source

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