Rare earth metal initiated polymerizations of polar and nonpolar monomers to give high molecular weight polymers with extremely narrow molecular weight distribution

1995 ◽  
Vol 196 (8) ◽  
pp. 2417-2441 ◽  
Author(s):  
Hajime Yasuda ◽  
Eiji Ihara
Keyword(s):  
Molecular Weight ◽  
Rare Earth ◽  
High Molecular Weight ◽  
Molecular Weight Distribution ◽  
Rare Earth Metal ◽  
Weight Distribution ◽  
Earth Metal ◽  
Narrow Molecular Weight Distribution ◽  
High Molecular Weight Polymers

Bis(phenolate) N-heterocyclic carbene rare earth metal complexes: synthesis, characterization and applications in the polymerization of n-hexyl isocyanate

RSC Advances ◽  
2015 ◽  
Vol 5 (101) ◽  
pp. 83295-83303 ◽  
Author(s):  
Min Zhang ◽  
Jingjing Zhang ◽  
Xufeng Ni ◽  
Zhiquan Shen
Keyword(s):  
Molecular Weight ◽  
Rare Earth ◽  
Metal Complexes ◽  
High Molecular Weight ◽  
Molecular Weight Distribution ◽  
Rare Earth Metal ◽  
Weight Distribution ◽  
Earth Metal ◽  
Narrow Molecular Weight Distribution ◽  
Rare Earth Metal Complexes

Polyhexyl isocyanantes catalyzed by N-heterocyclic carbene rare earth metal complexes show high molecular weight with narrow molecular weight distribution.

Rare earth metal initiated polymerization to give high polymers with narrow molecular weight distribution

1995 ◽  
Vol 95 (1) ◽  
pp. 203-216 ◽  
Author(s):  
Hajime Yasuda ◽  
Eiji Ihara ◽  
Masakazu Morimoto ◽  
Mitsufumi Nodono ◽  
Shiro Yoshioka ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Rare Earth ◽  
Molecular Weight Distribution ◽  
Rare Earth Metal ◽  
Weight Distribution ◽  
Earth Metal ◽  
Narrow Molecular Weight Distribution ◽  
High Polymers

Highly syndioselective coordination (co)polymerization of vinyl heteroaromatic monomers using rare-earth-metal complexes

2020 ◽  
Vol 11 (48) ◽  
pp. 7650-7655
Author(s):  
Tiantian Wang ◽  
Chunji Wu ◽  
Dongmei Cui
Keyword(s):  
Molecular Weight ◽  
Rare Earth ◽  
Metal Complexes ◽  
High Activity ◽  
High Molecular Weight ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Coordination Polymerization ◽  
Metal Precursors ◽  
Rare Earth Metal Complexes

This paper demonstrates the coordination polymerization of vinylbenzothiophene and its copolymerization with styrene with high activity and perfect syndioselectivity to give high molecular weight products by using rare-earth-metal precursors.

Syndiospecific polymerization of styrene by half-titanocene catalysts with the sulfur-containing donor ligand

e-Polymers ◽  
2014 ◽  
Vol 14 (4) ◽  
pp. 277-281 ◽  
Author(s):  
Wei Wang ◽  
Gang Zheng ◽  
Hongtao Wang
Keyword(s):  
Molecular Weight ◽  
Catalytic Activity ◽  
High Molecular Weight ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
High Catalytic Activity ◽  
Narrow Molecular Weight Distribution ◽  
Donor Ligand ◽  
High Yields ◽  
Sulfur Containing

AbstractMonocyclopentadienyl titanium complexes of the type Cp*TiX2 L (Cp*=C5 Me5, 1: L=C6 F5 S, X=OMe; 2: L=C6 F5 S, X=Cl; 3: L=2, 6-Me2-C6 H3 S, X=OMe) have been synthesized with high yields. These complexes are used as the catalysts for the syndiospecific polymerization of styrene. High catalytic activity is observed, and a polymer with high molecular weight and narrow molecular weight distribution is obtained. It is concluded that not only the sulfur-containing donor ligand but also the anion ligand strongly affects the polymerization activity and the molecular weight of the resultant polymer.

A synthetic route to ultra-high molecular weight polystyrene (>106) with narrow molecular weight distribution by emulsifier-free, emulsion organotellurium-mediated living radical polymerization (emulsion TERP)

2016 ◽  
Vol 7 (14) ◽  
pp. 2573-2580 ◽  
Author(s):  
Yukiya Kitayama ◽  
Masayoshi Okubo
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Radical Polymerization ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Living Radical Polymerization ◽  
Synthetic Route ◽  
Narrow Molecular Weight Distribution ◽  
Controlled Living Radical Polymerization ◽  
Ultra High Molecular Weight

We propose a route to synthesizing ultra-high molecular weight (>106) polystyrene (PS) having a narrow molecular weight distribution by controlled/living radical polymerization.

Sign in / Sign up

Export Citation Format

Share Document