METHOD FOR THE PREPARATION OF BIS(FLUORSULFONYL)IMIDE
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- ARKEMA FRANCE SA
- Filing Date
- 2020-04-21
- Publication Date
- 2026-06-03
AI Technical Summary
Existing processes for preparing bis(fluorosulfonyl)imide, such as those described in WO2009/123328, CN 109 592 655, and CN 108 002 355, suffer from issues like the formation of undesired byproducts, high energy consumption, and inefficiencies due to non-homogeneous reaction conditions, leading to lower yields and increased carbon footprint.
A process involving the continuous injection of hydrofluoric acid into a mechanically stirred reactor containing bis(halosulfonyl)imide, maintaining temperature and concentration homogeneity, and operating under controlled pressure and temperature conditions to minimize byproduct formation and enhance yield.
The process achieves high conversion and yield of bis(fluorosulfonyl)imide with minimal impurities, reducing energy consumption and environmental impact by ensuring homogeneous reaction conditions and controlled HF concentration.