Results 41 to 50 of about 902,813 (269)

Observation of Different Catalytic Activity of Various 1-Olefins during Ethylene/1-Olefin Copolymerization with Homogeneous Metallocene Catalysts

Molecules, 2011
This research aimed to investigate the copolymerization of ethylene and various 1-olefins. The comonomer lengths were varied from 1-hexene (1-C6) up to 1-octadecene (1-C18) in order to study the effect of comonomer chain length on the activity and ...
Mingkwan Wannaborworn, Bunjerd Jongsomjit, Piyasan Praserthdam   +2 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

Ethylene Copolymerization with Linear and End-Cyclized Olefins via a Metallocene Catalyst: Polymerization Behavior and Thermal Properties of Copolymers

Engineering, 2023
Olefin solution polymerization can be used to obtain high-performance polyolefin materials that cannot be obtained via other polymerization processes. Polyolefin elastomers (POE) are a typical example.
Changjiang Wu, Minqiao Ren, Liping Hou, Shuzhang Qu, Xinwei Li, Cui Zheng, Jian Chen, Wei Wang   +7 more
doaj   +1 more source

Half-titanocene 5-t-butyl-2-(1-(arylimino)methyl)quinolin-8-olate chlorides: Synthesis, characterization and ethylene (co-) polymerization behavior [PDF]

, 2013
A series of half-titanocene chloride complexes bearing 5-t-butyl-2-(1-(arylimino)methyl)quinolin-8-olate ligands (L), CpTiLCl₂, has been synthesized in acceptable yields by the stoichiometric reaction of CpTiCl₃ with the respective potassium 5-t-butyl-2-(
Chen, Langqiu, Redshaw, Carl, Sun, Wen-Hua, Wang, Lin, Yan, Qing, Yang, Wenhong   +5 more
core   +1 more source

UHMWPE/HDPE in-reactor blends, prepared by in situ polymerization: synthetic aspects and characterization [PDF]

, 2017
This work covers the synthesis and characterization of in-reactor Ultra-High Molecular Weight Polyethylene/ High Density Polyethylene, UHMWPE/HDPE, blends by in situ polymerization in a single reactor, through dual catalyst immobilization. These blends
Cerrada, M. L., Cramail, H., Ferreira, A. E., Lorenzo, V., Lourenco, J. P., Pérez, Ernesto, Ressia, J., Ribeiro, M. R., Vallés, E.   +8 more
core   +4 more sources

Complex Macromolecular Architectures Utilizing Metallocene Catalysts

Macromolecules, 2003
Graft copolymers having poly(methyl methacrylate), PMMA, backbone and polystyrene, PS, polyisoprene, PI, poly(ethylene oxide), PEO, poly(2-methyl-1,3-pentadiene), P2MP, and PS-b-PI branches were prepared using the macromonomer methodology and high-vacuum techniques. The methacrylic macromonomers, mMM, were synthesized by anionic polymerization, whereas
Batis, C., Karanikolopoulos, G., Pitsikalis, M., Hadjichristidis, N.   +3 more
openaire   +2 more sources

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.
Toshio Sasaki, Hirofumi Johoji
openaire   +2 more sources

Harnessing Toluene Solvent as a Reactant: Regioselective Benzyl Radical Addition to Multi‐π 1,5‐Enynes in a Copper‐Catalyzed Cascade to Indenes

Chemistry – A European Journal, EarlyView.
A copper‐catalyzed three‐component radical cascade of 1,5‐enynes with toluene and benzoic acids enables regioselective benzyl radical addition to multi‐Π systems, efficiently delivering polysubstituted indenes from an abundant solvent feedstock. ABSTRACT C─H activation of toluene generates a benzyl radical that undergoes C─C coupling, converting an ...
Saideh Rajai‐Daryasarei, Fatemeh Chahardehi, Mohammad Mahdi Sharifani, Morteza Jamshidi, Robert Stranger, Frank Rominger, Alireza Ariafard, Saeed Balalaie   +7 more
wiley   +1 more source

Beneficial influence of nanocarbon on the aryliminopyridylnickel chloride catalyzed ethylene polymerization [PDF]

, 2013
A series of 1-aryliminoethylpyridine ligands (L1―L3) was synthesized by condensation of 2-acetylpyridine with 1-aminonaphthalene, 2-aminoanthracene or 1-aminopyrene, respectively.
Durand, Jérôme, Liu, Boping, Redshaw, Carl, Serp, Philippe, Sun, Wen-Hua, Yue, Erlin, Zhang, Liping   +6 more
core   +4 more sources

Developments of Chiral Metallocenes as Polymerization Catalysts [PDF]

Molecules, 2005
This review article describes developments in chiral metallocenes as polymerization catalysts focusing on C2 symmetric ansa-zirconocene complexes. Selective synthesis of rac-isomers of ansa-zirconocenes are surveyed. Isospecific polymerizations of propylene catalyzed by chiral zirconocenes are summarized.
Yuushou Nakayama, Takeshi Shiono
openaire   +3 more sources