Invention Grant
- Patent Title: Purification of 1,1,1,3,3,3-hexafluoroisopropanol
- Patent Title (中): 1,1,1,3,3,3-六氟异丙醇的纯化
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Application No.: US10599472Application Date: 2005-02-04
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Publication No.: US07659433B2Publication Date: 2010-02-09
- Inventor: Paul Mazzell, Jr. , Joel Swinson , Barry Jones , Daniel Graham
- Applicant: Paul Mazzell, Jr. , Joel Swinson , Barry Jones , Daniel Graham
- Applicant Address: US NJ River Edge
- Assignee: Halocarbon Products Corporation
- Current Assignee: Halocarbon Products Corporation
- Current Assignee Address: US NJ River Edge
- Agency: Norris McLaughlin & Marcus, P.A.
- International Application: PCT/US2005/003366 WO 20050204
- International Announcement: WO2005/077873 WO 20050825
- Main IPC: C07C29/145
- IPC: C07C29/145 ; C07C29/82 ; C07C29/80

Abstract:
1,1,1,3,3,3-Hexafluoroisopropanol (HFIP) substantially free of 1,1,1-trifluoroacetone (TFA) can be separated from a mixture containing both compounds by A) catalytic reduction with hydrogen followed by fractional distillation; B) cooling to a temperature at which HFIP freezes and TFA remains liquid; C) forming a high boiling complex comprising HF and TFA followed by fractional distillation; or D) producing HF-free conditions to yield a HFIP/TFA azeotrope followed by fractional distillation. It is emphasized that this abstract is provided to comply with the rules requiring an abstract, which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR § 1.72(b).
Public/Granted literature
- US20080058560A1 Purification of 1,1,1,3,3,3-Hexafluoroiopropanol Public/Granted day:2008-03-06
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