polytetrahydrofuran (ptmeg or polythf) -尊龙官方平台

polytetrahydrofuran (ptmeg or polythf) with the formula ho-[-ch₂ch₂ch₂ch₂o-]_n-h is a white solid that melts into a clear, colorless liquid when heated to a temperature above room. it is an important intermediate in manufacturing spandex fibres， thermoplastic polyurethane elastomers and copolyether-esters elastomers. 

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