Azeotropic or quasi-azeotropic composition comprising hcl and fluorinated hydrocarbons
Forming azeotropic or quasi-azeotropic compositions of hydrochloric acid with fluorinated hydrocarbons simplifies the purification of fluorinated compounds, enhancing production efficiency and yield by separating and recovering high-purity materials.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- ARKEMA FRANCE SA
- Filing Date
- 2026-01-07
- Publication Date
- 2026-07-16
AI Technical Summary
The production processes for fluorinated compounds often generate byproducts with boiling points close to the target compound, necessitating complex purification steps that lead to yield loss and reduced productivity.
The formation and isolation of azeotropic or quasi-azeotropic compositions comprising hydrochloric acid and fluorinated hydrocarbons, such as 1,1-difluoroethylene, trifluoroethylene, or tetrafluoroethylene, followed by distillation under specific conditions to separate and purify the fluorinated hydrocarbons.
This method enhances the efficiency of fluorinated hydrocarbon production by simplifying purification processes and improving yield, allowing for the separation and recovery of high-purity fluorinated hydrocarbons and hydrochloric acid.
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