| PATENT ASSIGNEE'S COUNTRY | Japan |
| UPDATE | 05.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
Mfg method - Reacting Rf-O-CF(CF3)-COF with alkali metal carbonate in presence of solvent to form metal salt of a fluorinated carbo xylic acid of formula Rf-O-CF(CF3)-COOH - Removing volatile impurities by distn - Heat. metal salt to 180-280C to produce Rf-O-CF=CF2 |
| PATENT PHOTOCOPY | Available on request |
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