Polymerization Vinyl Ether

Vinyl ethers ch 2 chor r methyl ethyl isobutyl benzyl are very reactive vinyl monomers.

Polymerization vinyl ether.

That mediates the facial addition of polar vinyl monomers to an ionic chain end. A general and efficient access toward terminally functionalized poly vinyl ether s. Vinyl ethers undergo radical initiated copolymerization in the presence of specific monomers such as maleates fumarates and acrylics. This method however is highly sensitive to monomer structure and achieved only 76 m and 64 m in the case of n butyl bve.

Polymer chemistry 10 1002 pola 23916 48 6 1449 1455 2010. Provided is a method for the polymerization of vinyl ethers catalyzed by complexes of a lithium salt and a polyether. Macromolecules 2020 53 5 1536 1542. Thienyl chloride initiated living cationic 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. We identified the cationic polymerization of vinyl ethers as a high value target to exemplify such a catalyst controlled approach. They are increasingly used in radiation curing systems because of a lower toxicity profile than the commonly used acrylic monomers. 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.

In order to overcome the challenge of direct radical polymerization of vinyl ethers commercial hydroxy functional vinyl ethers such as 2 hydroxyethyl vinyl ether heve were subjected to free radical polymerization generating. On the other hand the stereostructure of living poly 2 benzoyloxyethyl vinyl ether obtained in the absence of added bases meso. Poly vinyl ether s with a t g as high as 100 c have been obtained in the living cationic polymerization of vinyl ethers with a bulky tricyclodecane or tricyclodecene unit using hcl zncl 2 in toluene at 30 c. 58 was quite different from that for the living polymerization.

Living cationic ring opening polymerization. 124 the fast living cationic polymerization of vinyl ethers with sncl 4 combined with etalcl 2 in the presence of an ester as an added base was reported. Studied systems are based on i 2 hi and on zinc halides zinc chloride zinc bromide and zinc iodide. A preferred complex is a complex of lithium tetrafluoroborate and a glyme.

Unprecedented controlled radical vinyl polymerization crp of vinyl ethers using reversible addition fragmentation chain transfer raft polymerization is reported. 125 the cationic.