E.i. Dupont De Nemours and Company

Other

Wesley Gerald Schindel

Vinci Martinez Felix

William H Gumprecht

Edmund Odon Banas

Process of the preparation of highly fluorinated alkanes by contacting halogenated alkenes or alkanes with at least the molar equivalent of HF in the presence of a catalyst selected from TaF.sub.5 and NbF.sub.5 in an amount of at least 0.25 molar equivalent at a temperature of 0.degree. C. to 175.degree. C.

Catalyzed hydrofluorination process

Described is the production of chlorofluorocarbons, particularly trichlorofluoromethane, by reaction between chlorocarbons, e.g., carbon tetrachloride, and ammonium bifluoride at around 300.degree.-550.degree. C in the presence of certain catalysts, e.g., an alkaline earth metal fluoride or ferric fluoride, calcium fluoride being preferred.

Catalyzed fluorination of chlorocarbons

Preparation of CCl.sub.3 F and CCl.sub.2 F.sub.2 by countercurrently contacting CaF.sub.2 and CCl.sub.4 under reaction conditions to provide high conversion both of CCl.sub.4 to fluorine-containing products and CaF.sub.2 to CaCl.sub.2.

Growing community of inventors

Pennsville, NJ, United States of America

Wesley Gerald Schindel