Cationic indium complexes for the copolymerization of functionalized epoxides with cyclic ethers and lactide

2019 ◽  
Vol 55 (23) ◽  
pp. 3347-3350 ◽  
Author(s):  
Carlos Diaz ◽  
Tannaz Ebrahimi ◽  
Parisa Mehrkhodavandi
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Cyclic Ethers ◽  
Indium Complexes ◽  
Salen Complexes ◽  
Kinetic Investigations

Cationic indium salen complexes are active catalysts for the ring opening polymerization of epoxides and other less strained cyclic ethers. Moreover, they are competent catalysts in the copolymerization of rac-lactide and epoxides to high molecular weight copolymers. Preliminary kinetic investigations with different cationic complexes revealed subtle effects of their solvent donors in the initiation rates of polymerization of epoxides.

Catalytic Ring-Opening Polymerization of Renewable Macrolactones to High Molecular Weight Polyethylene-like Polymers

2011 ◽  
Vol 44 (11) ◽  
pp. 4301-4305 ◽  
Author(s):  
Inge van der Meulen ◽  
Erik Gubbels ◽  
Saskia Huijser ◽  
Rafaël Sablong ◽  
Cor E. Koning ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Ring Opening ◽  
Ring Opening Polymerization

scholarly journals Gallium and indium complexes for ring-opening polymerization of cyclic ethers, esters and carbonates

2013 ◽  
Vol 257 (11-12) ◽  
pp. 1869-1886 ◽  
Author(s):  
Samuel Dagorne ◽  
Mickael Normand ◽  
Evgeny Kirillov ◽  
Jean-François Carpentier
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Cyclic Ethers ◽  
Indium Complexes

Article

1998 ◽  
Vol 76 (4) ◽  
pp. 371-381 ◽  
Author(s):  
Ian Manners
Keyword(s):  
Molecular Weight ◽  
Transition Metal ◽  
High Molecular Weight ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Metal Catalysts ◽  
Transition Metal Catalysts ◽  
Organometallic Polymer ◽  
Wide Range ◽  
Initial Discovery

Ring-opening polymerization (ROP) of strained ring-tilted metallocenophanes can be achieved thermally, via anionic or cationic initiation, or by the use of transition-metal catalysts and provides access to a wide range of high molecular weight (Mw = 105-106, Mn > 105) poly(metallocenes). These materials possess a variety of interesting properties and many are very easy to prepare. This article provides an overview of our work, giving background to and an account of the initial discovery, and discusses work on the synthesis and properties of new poly(metallocenes) and related materials with particular emphasis on recent research directions.Key words: metallocene, ring-opening polymerization, ferrocenophane, organometallic polymer.

Solvent-assisted anionic ring opening polymerization of glycidol: Toward medium and high molecular weight hyperbranched polyglycerols

2013 ◽  
Vol 51 (12) ◽  
pp. 2614-2621 ◽  
Author(s):  
Muhammad Imran ul-haq ◽  
Rajesh A. Shenoi ◽  
Donald E. Brooks ◽  
Jayachandran N. Kizhakkedathu
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Anionic Ring

scholarly journals Glycol-functionalized ionic liquids for high-temperature enzymatic ring-opening polymerization

RSC Advances ◽  
2018 ◽  
Vol 8 (63) ◽  
pp. 36025-36033 ◽  
Author(s):  
Hua Zhao ◽  
Lennox O. Afriyie ◽  
Nathaniel E. Larm ◽  
Gary A. Baker
Keyword(s):  
Thermal Stability ◽  
Molecular Weight ◽  
Ionic Liquids ◽  
High Temperature ◽  
High Molecular Weight ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
High Thermal Stability ◽  
Polymerization Reaction

New glycol-functionalized ionic liquids exhibit high thermal stability and are lipase-compatible, leading to a high molecular weight of polyester in the enzymatic ring-opening polymerization reaction.

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