Vinyl Ethers Polymerization

In general vinyl ethers possessing highly branched alkyl groups are more reactive than those bearing straight chain alkyl groups.

Vinyl ethers polymerization.

Degenerative chain transfer polymerization of vinyl ethers by simply using mixtures of weak and superstrong protonic acids. 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. 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.

Vinyl ethers undergo radical initiated copolymerization in the presence of specific monomers such as maleates fumarates and acrylics. Poly vinyl ether s pves feature a polar ether functionality in. 125 the cationic polymerization of vinyl ethers with a urethane group 4 vinyloxybutyl n butylcarbamate and 4 vinyloxybutyl. Journal of the american chemical society 2010 132 14 5273 5284.

They are increasingly used in radiation curing systems because of a lower toxicity profile than the commonly used acrylic monomers. Free radical copolymerization of vinyl ethers is also possible. Living cationic polymerization tfa et 2 alcl 1 4 dioxane of the vinyl ether functionalities afforded linear poly ve s which were then subjected to polymerization involving the acetylene moieties by either cu catalyzed oxidative coupling or a rh catalyzed process with both catalytic systems promoting formation of brush shaped polymers. Vinyl ethers undergo homopolymerization via a cationic mechanism.

We identified the cationic polymerization of vinyl ethers as a high value target to exemplify such a catalyst controlled approach. 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. A user friendly living cationic polymerization. Coordination polymerization of polar vinyl monomers by single site metal catalysts.

However the polymerization under free radical conditions gives only low molecular weight oligomers and only copolymers can be synthesized.