Telechelic PolyTHF a,co-Diols

PolyTHF that found practical applications have Mn ranging from 1000 to 2000 and carry two hydroxyl end-groups per macromolecule  

These oligomers are prepared by polymerization of THF with protonic acid initiators, and according to the patent literature and other available information, fluosulfonic acid has been used on a technical scale. A recent paper describes the successful application of H2S04/S03 mixtures 11). The diol of Mn = 1000 is a white opalescent solid at 24 C it melts at 32 °C giving a syrupy liquid with a hydroxyl number of 112-116, an acid number less than 0.05, a carbonyl number less than 4.0 and a Ca content le s than 5 ppm Na and K are less than 10 ppm 8). 

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