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-002117nas a2200253   4500008004100000022001400041245008500055210006900140260006800209300001000277490000800287520123800295653001901533653002601552653002701578653002401605653001601629100002101645700001501666700002101681700002401702700002301726856011401749       2006                        eng d  a0021-899500aSynthesis and characterization of copolyarylates using tin octoate as a catalyst0 aSynthesis and characterization of copolyarylates using tin octoa  a111 RIVER ST, HOBOKEN, NJ 07030 USAbJOHN WILEY & SONS INCcJUL  a70-770 v1013 a<p>A series of copolyarylates of bisphenol A (BPA) with varying ratios of diphenyl terephthalate (DPT) and diphenyl isophthalate (DPI) were prepared by melt polymerization at a temperature ranging from 200 to 290 degrees C under reduced pressure in the presence of tin octoate catalyst. Tin octoate catalyst has been extensively used for the preparation of biodegradable polymers namely, poly(lactic acid), poly(glycolic acid), and poly(lactide-glycolide) copolyesters. However, there are no reports on the preparation of copolyesters by melt polymerization using tin octoate catalyst. The effect of tin octoate catalyst was studied on the preparation of BPA/DPT/DPI copolyarylates. The copolyarylates were characterized by infrared and H-1 NMR spectroscopy, solution viscosity, thermogravimetric analysis, differential scanning calorimetry, and X-ray diffraction. The solution viscosities of copolyarylates were varied from 0.43 to 0.56 dL/g and the glass transition temperature (T-g) of copolyarylates was varied from 155 to 222 degrees C by varying the ratio of DPT and DPI. Most of the copolyarylates were found to be soluble in commonly used organic solvents and had film-forming properties. (c) 2006 Wiley Periodicals, Inc.</p>10acopolyarylates10adiphenyl isophthalate10adiphenyl terephthalate10amelt polymerization10atin octoate1 aWaghmare, P., B.1 aPathak, P.1 aDeshmukh, S., A.1 aIdage, Susheela, B.1 aIdage, Bhaskar, B.  uhttps://library.ncl.res.in/content/synthesis-and-characterization-copolyarylates-using-tin-octoate-catalyst-001911nas a2200229   4500008004100000022001400041245009300055210006900148260006800217300001400285490000800299520104900307653003201356653002401388653002701412653002601439100002101465700002101486700002401507700002301531856012701554       2006                        eng d  a0021-899500aSynthesis and characterization of siloxane copolyesters containing phenylindane linkages0 aSynthesis and characterization of siloxane copolyesters containi  a111 RIVER ST, HOBOKEN, NJ 07030 USAbJOHN WILEY & SONS INCcAUG  a2668-26740 v1013 a<p>A novel series of siloxane copolyesters containing 1,1,3-trimethyl-3-(p-hydroxyphenyl)-5-indanol (phenylindane bisphenol), diphenyl terephthalate (DPT), diphenyl isophthalate (DPI), and eugenol end-capped siloxanes in varying ratios were prepared at a temperature range of 200-290 degrees C under reduced pressure using dibutyl tin dilaurate catalyst by melt polycondensation. The siloxane-containing copolyesters were characterized by infrared and H-1 NMR spectroscopy, elemental analysis, solution viscosity, thermogravimetric analysis, differential scanning calorimetry, and X-ray diffraction. The effect of incorporation of siloxane moiety was studied on the properties of phenyl indane/DPT/DPI coplyester. The glass transition temperatures of copolyesters were decreased from 235 to 124 degrees C by incorporation of 10% eugenol end-capped siloxane without affecting the thermal properties. All copolyesters were found to be soluble in commonly used organic solvents and had film forming properties. (c) 2006 Wiley Periodicals, Inc.</p>10aeugenol end capped siloxane10amelt polymerization10aphenylindane bisphenol10asiloxane copolyesters1 aWaghmare, P., B.1 aDeshmukh, S., A.1 aIdage, Susheela, B.1 aIdage, Bhaskar, B.  uhttps://library.ncl.res.in/content/synthesis-and-characterization-siloxane-copolyesters-containing-phenylindane-linkages-0