With ether pendant groups preparation

This article summarizes and analyzes the results obtained for the anionic copolymerization of cyclic ethers with cyclic anhydrides. This reaction is of great practical importance, especially as curing reaction of epoxy resins and is also used for the preparation of linear polyesters with special functional pendant groups. 

Another important role of the pendant-functionalized vinyl ethers is that they can be precursors of initiators for living cationic polymerization of other vinyl ether and styrene derivatives, from which polymers with terminal functional groups can be prepared (see Section IV). 

D.J. Connolly and W.F. Gresham, Fluorocarbon vinyl ether polymers. USP 3,282,875, 1966 P.R. Resnick, Preparation of sulfonic acid containing vinyl ethers, USP 3,560,568 K. Kimoto, H. Miyauchi, J. Ohmura, M. Ebisawa and H. Hane, Novel fluorinated copolymers with tridihydro fluorosulfonyl fluoride pendant groups and preparation thereof. USP 4,329,435. 

B. Liu, G.P. Robertson, D.-S. Kim, M.D. Guiver, W. Hu, Z. Jiang, Aromatic poly(ether ketone)s with pendant sulfonic acid phenyl groups prepared by a mild sulfonation method for proton exchange membranes. Macromolecules 2007, 40(6), 1934-1944. 

Nanocomposites from (poly[2,2 -(p-oxidiphen-ylene)-5,5 -bibenzimidazole]) and polyhedral oligomeric silsesquioxane (POSS) with a pendant phenyl group have been prepared by an in situ polymerization of 4,4 -dicarboxydiphenyl ether and 3,3 -diaminobenzidine in the presence of POSS [21]. The PBI chains were successfully attached to the phenyl group of the POSS by aFriedel-Crafls reaction. 

Two new synthetic methods for the preparation of functional polymers containing 2-oxazoline pendant groups were developed. The first concerns the synthesis of m- and p-vinylbenzyl ethers of 2-(p-hydroxyphenyl)-2-oxazoline, followed by their radical poljnnerization. 2-(p-Hydroxyphenyl)-2-oxazo-line was reacted with a mixture of m- and p-chloromethylstyrene (60% m and 40% p) under phase transfer catalysis conditions at room temperature. The m-and p-vinylbenzyl ethers of 2-(p-hydroxyphenyl)-2-oxazoline obtained were separated by selective crystallization from methanol. Radical polymerization of these ethers was carried out in dioxane at 60 C, giving polymers with pendant 2-oxazoline groups. 

A new aromatic diamine monomer with four pendant -CF3 groups was successfully synthesized by a three-step reaction using w(4-fluorophenyl)sulfone and A-bromosuccinimide as starting materials. Then, a series of fluorinated poly(ether sulfone imide)s was conveniently prepared from the diamine and three aromatic dianhydrides (BPDA, BTDA, and ODPA) via one-step solution polycondensation. 

Pang J, Zhang H, Li X, Liu B, Jiang Z (2008) Poly(arylene ether)s with pendant sulfoalkoxy groups prepared by direct copolymerization method for proton exchange membranes. J Power Sources 184 1-8... 

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