METHOD OF ISOLATION OF PERFLUORO-M-XYLENE FROM THE MIXTURE OF ISOMERIC PERFLUORO-P- AND -M-XYLENES Russian patent published in 1997 - IPC

Abstract SU 1676226 A1

FIELD: chemical technology. SUBSTANCE: invention relates to production of the fluorinated xylenes. Process is carried out by treatment of the parent mixture with bromine and antimony pentafluoride at their mole ratio = 1: (4.5-5.5): (0.22-0.28) for 4-5 h at the room temperature followed by isolation of the end product by rectification. Yield of the end product is 52.6% at basic substance content 99%. EFFECT: simplified method. 1 tbl

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SU 1 676 226 A1

Authors

Krasnov V.I.

Platonov V.E.

Dates

1997-06-20—Published

1990-01-02—Filed