FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing acetic acid fluoride of difluoro(fluorosulphate)acetic acid, which can be used as a semi-product for producing organofluorine functional modifying monomers for thermally aggressive-resistant organofluorine polymers. Method involves oxidation of preheated perfluoroallyl fluorosulphate with oxygen at high temperatures, followed by holding the reaction mass at reaction temperature. Preliminary heating of perfluoroallyl fluorosulphate and its subsequent oxidation is carried out in presence of bromine derivative of fluoroolefin selected from group, including 1,2-dibromo-1,1,2,2-tetrafluoroethane and 1,2-dibromo-1,1,2,3,3,3-hexafluoropropane with molar ratio perfluoroallyl fluorosulphate : bromo-derivative fluoroolefin equal to 1:(0.03-0.07).
EFFECT: development of a method of producing an acyl fluoride of difluoro(fluorosulphate)acetic acid, which enables to obtain the desired compound of high purity with high output in milder conditions in a shorter period of time.
1 cl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING ACYL FLUORIDE OF DIFLUORO(FLUOROSULPHATE)ACETIC ACID | 2011 |
|
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| METHOD OF PREPARING POLYFLUOROALLYLOXYCOMPOUNDS | 0 |
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SU795452A3 |
| METHOD OF SEPARATING FLUOROOLEFINS FROM HF BY LIQUID-LIQUID EXTRACTION | 2007 |
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| METHODS FOR OBTAINING HALOGENATED FLUORIDATED ETHER CONTAINING COMPOUNDS | 2015 |
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RU2406718C2 |
