Synthesis and characterization of polyesteramides derived from an oxazoline-functional alcohol and dicarboxylic acid anhydrides

Abstract

Novel polyesteramides were synthesized by copolymerization in bulk of 5‐(4,5‐dihydro‐1,3‐oxazol‐2‐yl)‐1‐pentanol and various cyclic dicarboxylic acid anhydrides at temperatures varying between 120 and 200°C. The polymers resulting from polycondensation were characterized by means of 1H–NMR, FTIR, MALDI–TOF–MS, SEC, and DSC. The glass transition temperatures, Tg, of the copolymers were varied between −28 and +31°C as a function of the anhydride type. Molecular weights, Mw, were dependent on reaction temperature, reaction time, and anhydride type. Spectroscopic investigation of reaction products and esteramide model compounds provided evidence for imide by‐product formation, which accounts for the low degree of polymerization. © 1999 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 37: 3367–3376, 1999

High performance new heteroaromatic poly(thiourea-imide-ester)s

“…13,14 The majority of polymers have been prepared by the condensation of diacid monomers or their derivatives with hydroxy compounds. [15][16][17] New kind of heteroaromatic monomers are always focused and employed in the synthesis of advanced polyimide materials. 18,19 In general, the heteroaromatic structure in the main chain of a polymer would impart certain properties to it.…”

Synthesis and polymerization reactions of cyclic imino ethers. 3. Poly(ester amide)s of the AA + BB type on the basis of 2‐oxazolines

“…1-10 2-Oxazolines react with carboxylic acids, thiols, phenols or anilines in addition or polyaddition reactions. In the structural approach, these reactions were used for the preparation of poly(ester amide)s, [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] poly(ether amide)s, [30][31][32][33][34][35][36] poly (thioether amide)s [37][38][39][40][41][42][43][44][45] or poly(imino amide)s. 46 From the point of view of applications they were used for coupling (chain extension) of polyesters, 16,19,20,[26][27][28][29] end-capping reactions of polyesters with unsaturated and azo group containing compounds, [22][23][24] and modification of functionalized polyolefines with unsaturated 2-oxazoline derivative. …”