Title:
1,1,1,3,3,3-ヘキサフルオロイソプロパノールの精製
Document Type and Number:
Japanese Patent JP5048342
Kind Code:
B2
Abstract:
1,1,1,3,3,3-Hexafluoroisopropanol (HFIP) substantially free of 1,1,1-trifluoroacctone (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.
Inventors:
Mazeru, Paul, Junior
Swinson, Joel
Barry, Jones
Graham, Daniel
Swinson, Joel
Barry, Jones
Graham, Daniel
Application Number:
JP2006552229A
Publication Date:
October 17, 2012
Filing Date:
February 04, 2005
Export Citation:
Assignee:
Halo Carbon Products Corporation
International Classes:
C07C29/145; C07C29/76; C07C29/78; C07C29/80; C07C31/38; C07B61/00
Domestic Patent References:
| JP6184026A |
Foreign References:
| US3702872 | ||||
| GB974612A |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Kenichi Kato
Takashi Ishida
Tetsuji Koga
Kenichi Kato