Salen Complexes of Zirconium and Hafnium: Synthesis, Structural Characterization, Controlled Hydrolysis, and Solvent-Free Ring-Opening Polymerization of Cyclic Esters and Lactides

2011 ◽  
Vol 50 (7) ◽  
pp. 2720-2722 ◽  
Author(s):  
Tanmoy Kumar Saha ◽  
Venkatachalam Ramkumar ◽  
Debashis Chakraborty
Keyword(s):  
Structural Characterization ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Solvent Free ◽  
Free Ring ◽  
Cyclic Esters ◽  
Salen Complexes ◽  
Controlled Hydrolysis

Bis(imino)phenoxide complexes of zirconium: synthesis, structural characterization and solvent-free ring-opening polymerization of cyclic esters and lactides

2010 ◽  
Vol 39 (21) ◽  
pp. 5091 ◽  
Author(s):  
Tanmoy Kumar Saha ◽  
Bijja Rajashekhar ◽  
Ravikumar R. Gowda ◽  
Venkatachalam Ramkumar ◽  
Debashis Chakraborty
Keyword(s):  
Structural Characterization ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Solvent Free ◽  
Free Ring ◽  
Cyclic Esters ◽  
Imino Phenoxide

Coumarin salen-based zinc complex for solvent-free ring opening polymerization of ε-caprolactone

2017 ◽  
Vol 58 (10) ◽  
pp. 977-980 ◽  
Author(s):  
Nelson Nuñez-Dallos ◽  
Andrés F. Posada ◽  
John Hurtado
Keyword(s):  
Ring Opening ◽  
Zinc Complex ◽  
Ring Opening Polymerization ◽  
Solvent Free ◽  
Free Ring

Highly active and stereoselective zirconium and hafnium alkoxide initiators for solvent-free ring-opening polymerization of rac-lactide

2008 ◽  
pp. 1293 ◽  
Author(s):  
Amanda J. Chmura ◽  
Matthew G. Davidson ◽  
Catherine J. Frankis ◽  
Matthew D. Jones ◽  
Matthew D. Lunn
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Solvent Free ◽  
Free Ring ◽  
Highly Active

Concerning the ring-opening polymerization of lactide and cyclic esters by coordination metal catalysts

2010 ◽  
Vol 82 (8) ◽  
pp. 1647-1662 ◽  
Author(s):  
Malcolm H. Chisholm
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Solvent Free ◽  
Single Site ◽  
Active Group ◽  
Cyclic Esters ◽  
Highly Active ◽  
Group 2 ◽  
Single Site Catalysts ◽  
Competing Reactions

A summary of the reactions involved in the ring-opening polymerization (ROP) of lactide (LA) to give polylactides (PLAs) is presented along with competing reactions. Particular attention is given to the stereoselective polymerization of rac-LA to give heterotactic PLA and meso-LA to give syndiotactic PLA by aluminum Schiff-based catalysts and to the development of highly active group 2 metal single-site catalysts. Melt or solvent-free polymerization is also described along with reactions that lead exclusively to cyclic-polylactides.

Sign in / Sign up

Export Citation Format

Share Document