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99119627/04, 1999-09-13

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1999-09-13

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Actual filing date

1999-09-13

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2001-04-27

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Vserossijskij Nauchno-Issledovatel'Skij Institut Khimicheskoj Tekhnologii

METHOD OF SYNTHESIS OF PENTAFLUOROETHANE (COOLANT-125) Russian patent published in 2001 - IPC

Abstract RU 2165919 C1

FIELD: chemical technology. SUBSTANCE: invention relates to method of synthesis of pentafluoroethane by fluorination of halogen- compound with metal fluoride of transient valency. Process is carried out in the presence of diluting agent with isolation of the end product by the known procedures. 1,1,1,2-Tetrafluoroethane (coolant-134a) or 1,1,2,2-tetrafluoroethane (coolant-134) are used as the parent halogenorganic compound. Uranium hexafluoride in gaseous phase is used as metal fluoride of transient valency. Tetrafluoroethane and hexafluoroethane are used as diluting agents. EFFECT: significantly increased yield of pentafluoroethane. 2 cl, 5 ex

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RU 2 165 919 C1

Authors

Dates

2001-04-27—Published

1999-09-13—Filed

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