The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 2005
Filed:
Feb. 11, 2004
Applicants:
Tatsuo Nakada, Osaka, JP;
Seiji Takubo, Osaka, JP;
Toshikazu Yoshimura, Osaka, JP;
Takashi Shibanuma, Osaka, JP;
Inventors:
Tatsuo Nakada, Osaka, JP;
Seiji Takubo, Osaka, JP;
Toshikazu Yoshimura, Osaka, JP;
Takashi Shibanuma, Osaka, JP;
Assignee:
Daikin Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 17013 ; C07C 1706 ; C07C 1720 ; C07C 1908 ; C07C 1910 ;
U.S. Cl.
CPC ...
Abstract
In a process for producing 1,1,1,3,3-pentafluoropropane which has a liquid-phase reaction step for fluorination of 1,1,1,3,3-pentahalopropane (wherein at least one of halogen atoms is not fluorine) with HF in the presence of antimony pentahalide catalyst in a reactor to obtain a reaction mixture comprising 1,1,1,3,3-pentafluoropropane and the antimony pentahalide catalyst, the fluorination is conducted at a reaction temperature less than 50° C.