Vinyl Ethers Polymerization

A user friendly living cationic polymerization.

Vinyl ethers polymerization.

Isotactic poly isobutyl ve m 90 was generated via polymerization using an initiating system prepared by simply mixing taddol ticl 4 and isobutyl ve monomer. Degenerative chain transfer polymerization of vinyl ethers by simply using mixtures of weak and superstrong protonic acids. However the polymerization under free radical conditions gives only low molecular weight oligomers and only copolymers can be synthesized. Vinyl ethers undergo radical initiated copolymerization in the presence of specific monomers such as maleates fumarates and acrylics.

125 the cationic polymerization of vinyl ethers with a urethane group 4 vinyloxybutyl n butylcarbamate and 4 vinyloxybutyl. In general vinyl ethers possessing highly branched alkyl groups are more reactive than those bearing straight chain alkyl groups. Vinyl ethers undergo homopolymerization via a cationic mechanism. Journal of the american chemical society 2010 132 14 5273 5284.

Cationic polymerization and insertion chemistry in the reactions of vinyl ethers with α diimine pdme species. Titanium complexes of α α α α tetraaryl 1 3 dioxolane 4 5 dimethanol taddol derived from naturally abundant tartaric acid were demonstrated to function as highly effective catalysts for the stereoselective cationic polymerization of vinyl ethers ves. They are increasingly used in radiation curing systems because of a lower toxicity profile than the commonly used acrylic monomers. Poly vinyl ether s pves feature a polar ether functionality in.

We identified the cationic polymerization of vinyl ethers as a high value target to exemplify such a catalyst controlled approach. 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. Free radical copolymerization of vinyl ethers is also possible. 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.

It can be initiated with peroxide azo and redox initiators.