Vinyl Ether Polymerization

In this work we have developed a versatile and highly efficient initiation approach based on thienyl chloride derivatives with readily available starting materials for the living cationic polymerization of vinyl ethers.

Vinyl ether polymerization.

Provided is a method for the polymerization of vinyl ethers catalyzed by complexes of a lithium salt and a polyether. Living cationic ring opening polymerization. For example the state of the art method uses a phenoxide ligated titanium complex to achieve 92 meso diads m in the polymerization of iso butyl vinyl ether ibve. Shohei ida makoto ouchi mitsuo sawamoto living cationic polymerization of an azide containing vinyl ether toward addressable functionalization of polymers journal of polymer science part a.

Methyl vinyl ether can be made by reaction of acetylene and methanol in presence of a base. Polymerization is typically initiated with lewis acids such as boron trifluoride. A general and efficient access toward terminally functionalized poly vinyl ether s. A preferred complex is a complex of lithium tetrafluoroborate and a glyme.

Thienyl chloride initiated living cationic polymerization. This method however is highly sensitive to monomer structure and achieved only 76 m and 64 m in the case of n butyl bve and ethyl vinyl ether eve respectively. The alkene portion of the molecule is reactive in many ways. Studied systems are based on i 2 hi and on zinc halides zinc chloride zinc bromide and zinc iodide.

The vinyl carbonate 13 152 gives only copolymerization the ketene acetal 11 153 and the methyl vinyl ether 14 152 give both copolymerization and chain transfer in styrene polymerization whereas with the benzyl vinyl ethers 12 153 15 8 and 16 18 151 chain transfer is the only reaction detected. Polymer chemistry 10 1002 pola 23916 48 6 1449 1455 2010. It is prone to polymerization leading to formation of polyvinyl ethers. The resulting polymers exhibited precise chemical structures predetermined molecular weights and.

Macromolecules 2020 53 5 1536 1542. Poly vinyl ether s pves are useful materials of different applications.