STUDIES OF NOVEL SEGMENTED COPOLYETHER POLYURETHANES

Several segmented polyurethanes tetrahydrofuranethylene oxide copolyet her (PTE) based on isophorone diisocyanate (IPDI) and 1,4-butanediol ( BDO) were prepared. The structure and properties of these products wer e characterized with tensile testing, differential scanning carlorimet ry (DSC), Xray diffraction (XRD),C-13 NMR space and melt flow Index te chniques. All elastomers had satisfactory mechanical properties and th ermal properties. XRD results indicated that all elastomers were compl ete amorphous. The influence of low content (10%) of dibutyl phathalat e (DBP) on the properties of these polyurethanes was also studied. (C) 1998 Elsevier Science Ltd. All rights reserved.