METHOD FOR PRODUCTION OF 1,1-DICHLOR-1-FLUOROETHANE Russian patent published in 1996 - IPC

Abstract RU 2054407 C1

FIELD: organic compounds. SUBSTANCE: 1,1-dichlor-1-fluoroethane is used as reagent 1, anhydrous HF being used as reagent 2. Reaction is carried out at 55-95 C in vapor phase, molar ratio of said reagents being 1:4-1:8. Aluminium fluoride being prepared by treatment of anhydrous aluminium chloride or aluminium oxide with hydrogen fluoride is used as catalyst. Desired product having essential formula CH3CCl2F and boiling point 32 C is prepared at yield 99.8 %. EFFECT: improves efficiency of method.

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RU 2 054 407 C1

Authors

Uil'Jam Genri Gamrekht[Us]

Dates

1996-02-20Published

1989-07-28Filed