Title:
PRODUCTION OF 1,1,1,3,3-PENTAFLUOROPROPANE
Document Type and Number:
Japanese Patent JP3831987
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make it possible to obtain the subject compound useful as a foaming agent, etc., in a high yield and a high selectivity with a long catalyst life, by fluorinating 1,1,1,3,3-pentachloropropane in the absence of catalyst and the fluorinating the resultant compound in the presence of a catalyst.
SOLUTION: (A) 1,1,1,3,3-Pentachloropropane is fluorinated with (B) hydrogen fluoride in the absence of fluorinating catalyst at, e.g. 50-300°C temperature and (1:1) to (1:30) molar ratio of the components A:B to provide (C) a partially fluorinated reactional product, which is then fluorinated with the component B in the presence of (D) a fluorinating catalyst (e.g. a catalyst containing a halide of Sb, Nb or Ta) at 0-200°C temperature to afford 1,1,1,3,3- pentafluoropropane.
Inventors:
Keiichi Onishi
Shuichi Okamoto
Shuichi Okamoto
Application Number:
JP25348396A
Publication Date:
October 11, 2006
Filing Date:
September 25, 1996
Export Citation:
Assignee:
Asahi Glass Co., Ltd.
International Classes:
B01J27/10; C07C19/08; B01J27/12; B01J27/135; C07B61/00; C07C17/20; C07C17/35; (IPC1-7): C07C19/08; B01J27/10; B01J27/12; B01J27/135; C07C17/20; C07C17/35; //C07B61/00
Domestic Patent References:
| JP9241188A | ||||
| JP10017502A | ||||
| JP8073385A |
Foreign References:
| WO1997037956A1 | ||||
| WO1997008117A1 | ||||
| WO1996001797A1 |
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