01937nas a2200253   4500008004100000022001400041245011300055210006900168260006800237300001400305490000800319520098400327653002601311653001601337653002601353653002701379653003201406653002401438100002101462700002401483700002201507700002301529856013101552       2006                        eng d  a0021-899500aSynthesis and characterization of aromatic copolyesters containing siloxane linkages in the polymer backbone0 aSynthesis and characterization of aromatic copolyesters containi  a111 RIVER ST, HOBOKEN, NJ 07030 USAbJOHN WILEY & SONS INCcMAY  a3222-32280 v1003 a<p>A new series of aromatic copolyesters containing siloxane linkages were prepared by the melt polymerization of bisphenol A (BPA) with eugenol end-capped siloxane (EuSi), diphenyl terephthalate (DPT), and diphenyl isoplithalate (DPI) in varying ratio in the temperature range 220-290 degrees C under reduced pressure in the presence of dibutyl tin dilaurate (DBTL) catalyst. The siloxane copolyesters prepared were characterized by FTIR, H-1-NMR spectroscopy, solution viscosity, thermogravimetric analysis, differential scanning calorimetry, and X-ray diffraction. The effect of incorporation of eugenol end-capped siloxane was studied on the properties of BPA/DPI/DPT copolyesters. The glass-transition temperature of copolyester was decreased from 184 to 70 degrees C by incorporation of 20% of eugenol endcapped siloxane. All copolyesters were found to be soluble in commonly used aprotic polar solvents and had film-forming properties. (c) 2006 Wiley Periodicals, Inc.</p>10aaromatic copolyesters10aBisphenol A10adiphenyl isophthalate10adiphenyl terephthalate10aeugenol end-capped siloxane10amelt polymerization1 aWaghmare, P., B.1 aIdage, Susheela, B.1 aMenon, Shamal, K.1 aIdage, Bhaskar, B.  uhttps://library.ncl.res.in/content/synthesis-and-characterization-aromatic-copolyesters-containing-siloxane-linkages-polymer-0