scholarly journals Expanding vinyl ether monomer repertoire for ring‐expansion cationic polymerization: Various cyclic polymers with tailored pendant groups

2017 ◽  
Vol 55 (18) ◽  
pp. 3082-3089 ◽  
Author(s):  
Hajime Kammiyada ◽  
Makoto Ouchi ◽  
Mitsuo Sawamoto
Keyword(s):  
Vinyl Ether ◽  
Cationic Polymerization ◽  
Ring Expansion ◽  
Cyclic Polymers

A convergent approach to ring polymers with narrow molecular weight distributions through post dilution in ring expansion cationic polymerization

2016 ◽  
Vol 7 (45) ◽  
pp. 6911-6917 ◽  
Author(s):  
Hajime Kammiyada ◽  
Makoto Ouchi ◽  
Mitsuo Sawamoto
Keyword(s):  
Molecular Weight ◽  
Vinyl Ether ◽  
Cationic Polymerization ◽  
Ring Expansion ◽  
Molecular Weight Distributions ◽  
Weight Distributions ◽  
Fused Ring ◽  
Ring Polymers ◽  
Convergent Approach

In this paper, we demonstrate a convergent approach to convert “fused” ring chains obtained via ring expansion cationic polymerization of vinyl ether with a hemiacetal ester (HAE)-based ring initiator (1) into “sing” ring ones of narrow MWDs.

Construction of ring-based architectures via ring-expansion cationic polymerization and post-polymerization modification: design of cyclic initiators from divinyl ether and dicarboxylic acid

2021 ◽  
Author(s):  
Naoyuki Kusuyama ◽  
Yuji Daito ◽  
Hiroyuki Kubota ◽  
Yuki Kametani ◽  
Makoto Ouchi
Keyword(s):  
Dicarboxylic Acid ◽  
Vinyl Ether ◽  
Cationic Polymerization ◽  
Ring Expansion ◽  
Divinyl Ether

Topologically unique polymers such as tadpole and figure-eight polymers were synthesized via ring-expansion cationic polymerization (RECP) of vinyl ether with a functionalized cyclic initiator, followed by post-polymerization modification (PPM) reactions.

Magnesium Bromide (MgBr2) as a Catalyst for Living Cationic Polymerization and Ring-Expansion Cationic Polymerization

2021 ◽  
Author(s):  
Yuji Daito ◽  
Reina Kojima ◽  
Naoyuki Kusuyama ◽  
Yasuhiro Kohsaka ◽  
Makoto Ouchi
Keyword(s):  
Vinyl Ether ◽  
Cationic Polymerization ◽  
Ring Expansion ◽  
Magnesium Bromide ◽  
Effective Catalyst ◽  
Living Cationic Polymerization ◽  
Cationic Polymerizations

Magnesium bromide (MgBr2) was found as an effective catalyst for ring-expansion cationic polymerizations of isobutyl vinyl ether (IBVE) initiated by a “cyclic” hemiacetal ester (HAE) bond-based initiator leading to syntheses...

Living Cationic Polymerization of Vinyl Ether with a Thienyl Group

2015 ◽  
Vol 72 (7) ◽  
pp. 433-439
Author(s):  
Takeshi NAMIKOSHI ◽  
Ayaka KANEDA ◽  
Takashi MIYANAGA ◽  
Shinji WATANABE ◽  
Miki MURATA
Keyword(s):  
Vinyl Ether ◽  
Cationic Polymerization ◽  
Living Cationic Polymerization ◽  
Thienyl Group
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