Vinyl Ether Polymerization

A preferred complex is a complex of lithium tetrafluoroborate and a glyme.

Vinyl ether polymerization.

It was in 1878 that wislicenus reported the transformation of ethyl vinyl ether into a viscous material in the presence of iodine. 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 vinyl polymers without polyacetals obtained by self polyaddition polymerization. Vinyl ethers undergo homopolymerization via a cationic mechanism. They are increasingly used in radiation curing systems because of a lower toxicity profile than the commonly used acrylic monomers.

They rely on a chiral phosphoric acid in. We have recently realized ring expansion cationic polymerization of vinyl ethers by using a hemiacetal ester embedded cyclic initiator that is easily synthesized. Cationic polymerization of poly α methylstyrene block isobutyl vinyl ether using maghnite h clay algerian mmt as catalyst moulkheir ayat mohammed belbachir abdelkader rahmouni. A combination of a metal free photocatalyst a chain transfer agent and light irradiation enables the synthesis of various poly vinyl ether s with good control over molecular weight and dispersity as well as excellent chain end fidelity.

Herein the unique polymerization is reviewed along with the history of ring expansion polymerization. This polymerization proceeds under mild conditions. Teator and leibfarth report a general protocol to polymerize a variety of such vinyl ethers isotactically see the perspective by foster and o reilly. Vinyl ethers undergo radical initiated copolymerization in the presence of specific monomers such as maleates fumarates and acrylics.

Provided is a method for the polymerization of vinyl ethers catalyzed by complexes of a lithium salt and a polyether. This article is part of the themed collection. Stereoselective cationic polymerization of vinyl ethers by easily and finely tunable titanium complexes prepared from tartrate derived diols. 1 the first systematic investigations of vinyl ether polymerization began in 1928 at i g.