Results 21 to 30 of about 360,310 (205)
Monomer effect on the chain transfer by diethyl zinc in olefin polymerization by metallocene catalysts [PDF]
Polyolefins Journal, 2021 The present paper systematically studies the homo- and copolymerization of ethylene or propylene using metallocene as catalyst and diethyl zinc as chain transfer agent to obtain the polyolefin waxes with narrow molecular weight distribution and with a ...
Wei Wang, Taoyi Zhang, Liping Hou
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IN SITU SILICA SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION [PDF]
Journal of Petroleum Science and Technology, 2014 Bis(2-R-ind)ZrCl2 (R: H or phenyl) was supported on different types of silica by in situ impregnation method and used for ethylene polymerization.
saeid ahmadjo +6 more
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Intelligent catalysts for ethylene oligomerization and polymerization [PDF]
Polyolefins Journal, 2015 EEthylene polymerization catalysts became available in an enormous variety. The challenge in this research is to find catalysts that are able to connect ethylene molecules in such a way that not only linear chains are produced but variations like ...
Helmut G. Alt
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Propene-cycloolefin polymerization [PDF]
Polyolefins Journal, 2014 Highly active metallocenes and other single site catalysts have opened up the possibility of polymerizing cycloolefins such as norbornene (N) or of copolymerizing them with ethene (E) or propene (P).
Laura Boggioni, Incoronata Tritto
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Heterobimetallic Janus Catalysts for the One-Pot Synthesis of Polar-Apolar Block Copolymers. [PDF]
Angew Chem Int Ed EnglHeterobimetallic Janus catalysts act as bifunctional initiators, combining two distinct polymerisation mechanisms in one pot to deliver well‐defined apolar‐polar block copolymers. Combining Earth abundant Ti and Al catalysts for respective α‐olefin and lactone polymerisation, the orthogonal activity is enabled by unprecedented initiation from a Ti ...
Chambenahalli R, Nichol GS, Garden JA.
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Homogeneous and heterogeneous oligomerization reactions of olefins with unbridged metallocene catalysts [PDF]
Polyolefins Journal, 2019 1-Pentene, respectively 1-hexene, were reacted with 13 homogeneous metallocene catalysts to give linear oligomerization products, predominantly dimers, with selectivities above 90%.
Tanja Ritter, Helmut Alt
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Molecules, 2021 The copolymerization of ethylene‒diene conjugates (butadiene (BD), isoprene (IP) and nonconjugates (5-ethylidene-2-norbornene (ENB), vinyl norbornene VNB, 4-vinylcyclohexene (VCH) and 1, 4-hexadiene (HD)), and terpolymerization of ethylene-propylene ...
Amjad Ali +9 more
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Innovative catalytic systems driving sustainable olefin polymerization: Recent advances and green chemistry approaches [PDF]
Polyolefins JournalThis mini-review addresses the burgeoning requirements for environmentally friendly processes in the polymer industry, focusing on recent progress in developing catalytic systems for sustainable olefin polymerization.
Farabi Hossain, Md Enamul Hoque
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Scientific Reports, 2021 The contemporary search for new catalysts for olefin oligomerization and polymerization is based on the study of coordinating compounds and/or organometallic compounds as post-metallocene catalysts.
Jacek Malinowski +8 more
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Discovery and development of metallocene-based polyolefins with special properties [PDF]
Polyolefins Journal, 2015 Beside Ziegler-Natta and Phillips catalysts the development of methylaluminoxane (MAO) as cocatalyst in combination with metallocenes or other transition metal complexes for the polymerization of olefins has widely increased the possibilities in ...
Walter Kaminsky, Mercia Fernandes
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