Invention Grant
- Patent Title: Process for the reduction of acidic contaminates in fluorinated hydrocarbons
- Patent Title (中): 降低氟化烃中酸性污染物的方法
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Application No.: US12144394Application Date: 2008-06-23
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Publication No.: US08212092B2Publication Date: 2012-07-03
- Inventor: Velliyur Nott Mallikarjuna Rao , Allen C Sievert
- Applicant: Velliyur Nott Mallikarjuna Rao , Allen C Sievert
- Applicant Address: US DE Wilmington
- Assignee: E I du Pont de Nemours and Company
- Current Assignee: E I du Pont de Nemours and Company
- Current Assignee Address: US DE Wilmington
- Main IPC: C07C17/38
- IPC: C07C17/38
Abstract:
The present invention relates to processes for reducing the concentration of acidic impurities HF, HCl, HBr, HI, HNO3 and H2SO4 in fluorinated hydrocarbons. The process involves: (i) contacting the fluorinated hydrocarbon with a phosphorous oxyacid salt, and (ii) recovering the fluorinated hydrocarbon having reduced concentration of, or substantially free of, said acidic contaminant, provided that said fluorinated hydrocarbon is not CF3CH2CF3 or CF3CHFCF3.
Public/Granted literature
- US20080255396A1 PROCESS FOR THE REDUCTION OF ACIDIC CONTAMINATES IN FLUORINATED HYDROCARBONS Public/Granted day:2008-10-16
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