A process and apparatus for the preparation of tetrafluoroethane-beta-sultone
By using difluoroacetyl fluoride and fluorochlorosulfonyl as raw materials, combined with a Lewis base and acid catalysis system and a segmented continuous reaction design, the safety risks and side reaction problems in the synthesis of tetrafluoroethane-β-sulfonolactone were solved, achieving the preparation of high-purity, high-yield products suitable for industrial applications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZIBO FEIYUAN CHEM CO LTD
- Filing Date
- 2026-06-18
- Publication Date
- 2026-07-17
AI Technical Summary
The existing process for synthesizing tetrafluoroethane-β-sulfonyl lactone has problems such as high safety risks, harsh reaction conditions, numerous side reactions, low yield, and difficulty in separation and purification.
Using difluoroacetyl fluoride and fluorochlorosulfonyl as raw materials, the reaction proceeds through nucleophilic substitution and intramolecular ring-closing reactions, utilizing a Lewis base and Lewis acid catalytic system under medium-low temperature and micro-negative pressure conditions. Combined with a segmented continuous reaction design and a dedicated continuous production device, the reaction is carried out safely, controllably, and efficiently.
The reaction process is safe and controllable, with high raw material conversion rate and high product purity, which reduces production costs, conforms to the development trend of green chemical industry, and is suitable for industrial promotion.
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Figure CN122404282A_ABST