| 摘要 |
HOE 91/F 361 of the disclosure: Process for the preparation of perfluorinated ethers The invention relates to a process for the preparation of perfluorinated ethers of the formula (I) R-CF2-CF3 (I) in which R is the radical CF3(CF2)2-O-¢CF(CF3)CF2-O!n-, in which n is an integer from 0 to 60, from compounds of the formula (II) R-¢CF(CF3)CF2-O-!CHF-CF3 (II) by heating these at 150-350.degree.C in the presence of at least one of the compounds A1C13, A1Br3 or A1F3.
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