Selective cationic addition polymerization of 2,4-dimethylene-1,3-dioxolane by a common Lewis acid: synthesis of vinyl ether-pendant polymer under cationic polymerization conditions

1992 ◽  
Vol 25 (12) ◽  
pp. 3313-3314 ◽  
Author(s):  
Tsutomu Yokozawa ◽  
Ryoji Hayashi ◽  
Takeshi Endo
Keyword(s):  
Vinyl Ether ◽  
Lewis Acid ◽  
Cationic Polymerization ◽  
Acid Synthesis ◽  
Addition Polymerization ◽  
Polymerization Conditions

scholarly journals Polar Thermoplastics with Tunable Physical Properties Enabled by the Stereoregular Copolymerization of Vinyl Ethers

2019 ◽  
Author(s):  
Aaron Teator ◽  
Travis Varner ◽  
Paige Jacky ◽  
Karolina Sheyko ◽  
Frank Leibfarth
Keyword(s):  
Glass Transition ◽  
Phosphoric Acid ◽  
Vinyl Ether ◽  
Lewis Acid ◽  
Acid Chloride ◽  
Material Properties ◽  
Cationic Polymerization ◽  
Chemical Space ◽  
Vinyl Ethers ◽  
Post Functionalization

A series of isotactic, semicrystalline vinyl ether copolymers (up to 94% <i>meso</i> diads) were synthesized using a chiral BINOL-based phosphoric acid in combination with a titanium Lewis acid. This stereoselective cationic polymerization enabled the systematic tuning of both glass-transition (<i>T</i><sub>g</sub>) and melting temperature (<i>T</i><sub>m</sub>) in copolymers derived from alkyl vinyl ethers (<i>i.e.</i>, ethyl, butyl, isobutyl). Additionally, a vinyl ether comonomer bearing an acyl-protected alcohol was utilized as a platform for post-functionalization. Copolymers containing the masked alcohols were shown to undergo facile deprotection and subsequent coupling with a desired acid chloride. Collectively, these results highlight the diverse material properties and expanded chemical space accessible through stereoselective cationic polymerization mediated by a chiral anion.

scholarly journals A well-defined block copolymer synthesis via living cationic polymerization and nitroxide-mediated polymerization using carboxylic acid-based alkoxyamines as a dual initiator

2016 ◽  
Vol 7 (8) ◽  
pp. 1659-1667 ◽  
Author(s):  
Dao Le ◽  
Trang N. T. Phan ◽  
Laurent Autissier ◽  
Laurence Charles ◽  
Didier Gigmes
Keyword(s):  
Carboxylic Acid ◽  
Block Copolymer ◽  
Vinyl Ether ◽  
Lewis Acid ◽  
Cationic Polymerization ◽  
Living Cationic Polymerization ◽  
Nitroxide Mediated Polymerization ◽  
Protonic Acids

A series of carboxylic acid-based alkoxyamines associated with SnBr4, a Lewis acid, have been used as protonic acids of a binary initiating system to control the cationic polymerization of vinyl ether.

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