scholarly journals FI Catalyst for Polymerization of Olefin

10.5772/46187 ◽  
2012 ◽  
Author(s):  
S. Damavandi ◽  
S. Ahmadjo ◽  
R. Sandaroos ◽  
G.H. Zohuri
Keyword(s):  
Fi Catalyst

Designing polyethylene characteristics by modification of the support for FI catalyst

2017 ◽  
Vol 434 ◽  
pp. 1-6 ◽  
Author(s):  
Eliana Galland Barrera ◽  
João H.Z. dos Santos
Keyword(s):  
Fi Catalyst

Synthesis and Application of FI Catalyst for Ethylene Polymerization

2012 ◽  
Vol 49 (4) ◽  
pp. 339-347 ◽  
Author(s):  
Saman Damavandi ◽  
Reza Sandaroos ◽  
Mohammad Amin Shamekhi
Keyword(s):  
Ethylene Polymerization ◽  
Fi Catalyst

Polyolefin structural control using phenoxy-imine ligated group 4 transition metal complex catalysts

e-Polymers ◽  
2003 ◽  
Vol 3 (1) ◽  
Author(s):  
Naoto Matsukawa ◽  
Sei-ichi Ishii ◽  
Rieko Furuyama ◽  
Junji Saito ◽  
Makoto Mitani ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Transition Metal ◽  
Metal Complex ◽  
Structural Control ◽  
Transition Metal Complex ◽  
Control Mechanism ◽  
Central Metal ◽  
Group 4 ◽  
Fi Catalyst ◽  
Metal Complex Catalysts

Abstract This paper describes the structural control of polyolefins achieved by using group 4 transition metal complex catalysts featuring a pair of phenoxy-imine chelate ligands (named FI catalysts). FI catalysts can produce very low to ultrahigh molecular weight polymers. For example, a Zr-FI catalyst bearing a cycloalkyl group on the imine-nitrogen with methylaluminoxane (MAO) activation is capable of selectively forming vinyl-terminated low molecular weight polyethylenes (Mw < 5000) whereas a Zr-FI catalyst with a triethylsilyl group ortho to the phenoxyoxygen can generate ethylene/propylene amorphous copolymers with ultra-high molecular weights (Mw > 10 000 000) when treated with iBu3Al / Ph3CB(C6F5)4. In addition, a Ti-FI catalyst, possessing an o-phenoxytrimethylsilyl group, with MAO can form highly syndiotactic polypropylenes ([rrrr] = 84%, Tm = 140°C) via a chainend control mechanism. Conversely, upon activation with iBu3Al / Ph3CB(C6F5)4, a Hf-FI catalyst with a tert-butyl group ortho to the phenoxy-oxygen is able to produce high molecular weight isotactic polypropylenes ([mm] = 69%, Tm = 124°C, Mw = 412 000) via a site control mechanism. Therefore, FI catalysts have shown the ability to create various polyolefin architectures by simple variation of the central metal, the ligand structure and the co-catalyst.

Pressure-Sensitive Supported FI Catalyst for the Precise Synthesis of Uni- and Bimodal Polyethylene

2017 ◽  
Vol 56 (16) ◽  
pp. 4684-4689 ◽  
Author(s):  
Feng Yu ◽  
Yanqiong Yang ◽  
Dengfeng He ◽  
Dirong Gong ◽  
Zhong-Ren Chen
Keyword(s):  
Pressure Sensitive ◽  
Fi Catalyst ◽  
Bimodal Polyethylene

Development of Single-Site New Olefin Polymerization Catalyst Systems Using MgCl2-Based Activators: MAO-Free MgCl2-Supported FI Catalyst Systems

2004 ◽  
Vol 77 (4) ◽  
pp. 617-625 ◽  
Author(s):  
Yasushi Nakayama ◽  
Hideki Bando ◽  
Yoshiho Sonobe ◽  
Terunori Fujita
Keyword(s):  
Olefin Polymerization ◽  
Single Site ◽  
Polymerization Catalyst ◽  
Catalyst Systems ◽  
Fi Catalyst

Development of FI Catalyst Systems and Their Applications to New Polyolefin-Based Materials

ChemInform ◽  
2004 ◽  
Vol 35 (16) ◽  
Author(s):  
Yasushi Nakayama ◽  
Makoto Mitani ◽  
Hideki Bando ◽  
Terunori Fujita
Keyword(s):  
Catalyst Systems ◽  
Fi Catalyst

FI catalyst helps produce oligomer with double bond at one end

2003 ◽  
Vol 2003 (2) ◽  
pp. 5
Keyword(s):  
Double Bond ◽  
Fi Catalyst

Novel Ni-based FI catalyst for ethylene polymerization

2015 ◽  
Vol 64 ◽  
pp. 118-125 ◽  
Author(s):  
Saman Damavandi ◽  
Narjes Samadieh ◽  
Saeid Ahmadjo ◽  
Zahra Etemadinia ◽  
Gholam Hossein Zohuri
Keyword(s):  
Ethylene Polymerization ◽  
Fi Catalyst

scholarly journals Development of FI Catalyst Systems and Their Applications to New Polyolefin-Based Materials

2003 ◽  
Vol 61 (11) ◽  
pp. 1124-1137 ◽  
Author(s):  
Yasushi Nakayama ◽  
Makoto Mitani ◽  
Hideki Bando ◽  
Terunori Fujita
Keyword(s):  
Catalyst Systems ◽  
Fi Catalyst

scholarly journals Immobilization of isolated FI catalyst on polyhedral oligomeric silsesquioxane-functionalized silica for the synthesis of weakly entangled polyethylene

2016 ◽  
Vol 52 (74) ◽  
pp. 11092-11095 ◽  
Author(s):  
Wei Li ◽  
Huaqin Yang ◽  
Jingjing Zhang ◽  
Jingshan Mu ◽  
Dirong Gong ◽  
...  
Keyword(s):  
Polyhedral Oligomeric Silsesquioxane ◽  
Functionalized Silica ◽  
Oligomeric Silsesquioxane ◽  
Fi Catalyst

POSS-functionalized silica can isolate the anchored FI catalysts and hinder chain overlap in the polymerization of ethylene.

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