Vinyl Ether Polymerization

Living cationic ring opening polymerization.

Vinyl ether polymerization.

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. Poly vinyl ether s pves are useful materials of different applications. It is prone to polymerization leading to formation of polyvinyl ethers. The resulting polymers are produced under mild and controlled conditions and are useful in adhesives and coatings as well as in other uses such as for polymer electrolytes in batteries and for viscosity.

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. Studied systems are based on i 2 hi and on zinc halides zinc chloride zinc bromide and zinc iodide. Thienyl chloride initiated living cationic polymerization.

Vinyl ethers ch 2 chor r methyl ethyl isobutyl benzyl are very reactive vinyl monomers. 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. Polymer chemistry 10 1002 pola 23916 48 6 1449 1455 2010. 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.

Provided is a method for the polymerization of vinyl ethers catalyzed by complexes of a lithium salt and a polyether. A preferred complex is a complex of lithium tetrafluoroborate and a glyme. The alkene portion of the molecule is reactive in many ways. 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.

Amazing achievements in vinyl ether ve chemistry from the first example of ve polymerization to a plethora of recent research facilitated enormous progress in ves synthesis and in design of advanced polymer materials the fundamentally important point in this subject is the remarkable versatility of ve structures that resonates with the tunability of the. A general and efficient access toward terminally functionalized poly vinyl ether s.