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Facile Synthesis for Functional Perfluoropolyether Oligomers, Diacids, Diesters,and Surfactants

机译:功能性全氟聚醚低聚物,二酸,二酯和表面活性剂的简便合成

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摘要

Linear polyester precursors provide a convenient low cost synthesis forfluorocarbon surfactants, diacids, diesters, and intermediates. A reaction scheme starting with hydrocarbon linear polyesters followed by conversion of the ester to a perfluoro ester by direct fluorination and subsequent treatment with nonstoichiometric amounts of sulfur tetrafluoride produce upon hydrolysis of ester units, remaining in the polymer, low molecular weight perfluoropolyether diacids. Alternatively, this technique can be altered slightly to produce diesters and other functional perfluorocarbon intermediates.

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