Invention Grant
US08357828B2 Processes for producing 1,1-dichloro-2,3,3,3-tetrafluoropropene and 2,3,3,3-tetrafluoropropene
有权
制备1,1-二氯-2,3,3,3-四氟丙烯和2,3,3,3-四氟丙烯的方法
- Patent Title: Processes for producing 1,1-dichloro-2,3,3,3-tetrafluoropropene and 2,3,3,3-tetrafluoropropene
- Patent Title (中): 制备1,1-二氯-2,3,3,3-四氟丙烯和2,3,3,3-四氟丙烯的方法
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Application No.: US13163809Application Date: 2011-06-20
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Publication No.: US08357828B2Publication Date: 2013-01-22
- Inventor: Hidekazu Okamoto , Yasuyuki Sasao
- Applicant: Hidekazu Okamoto , Yasuyuki Sasao
- Applicant Address: JP Tokyo
- Assignee: Asahi Glass Company, Limited
- Current Assignee: Asahi Glass Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-331321 20081225
- Main IPC: C07C21/18
- IPC: C07C21/18

Abstract:
To provide a simple and economical process for producing 1,1-dichloro-2,3,3,3-tetrafluoropropene, which does not require purification of the raw material component obtained in the form of a mixture of isomers, and a process for producing 2,3,3,3-tetrafluoropropene from the product thereby obtained.A process for producing 1,1-dichloro-2,3,3,3-tetrafluoropropene, characterized by bringing a mixture of dichloropentafluoropropane isomers which contains 1,1-dichloro-2,2,3,3,3-pentafluoropropane into contact with an aqueous alkali solution in the presence of a phase transfer catalyst, and thereby selectively dehydrofluorinating only the 1,1-dichloro-2,2,3,3,3-pentafluoropropane in the mixture, and a process for producing 2,3,3,3-tetrafluoropropene from the 1,1-dichloro-2,3,3,3-tetrafluoropropene thereby obtained.
Public/Granted literature
- US20110251442A1 PROCESSES FOR PRODUCING 1,1-DICHLORO-2,3,3,3-TETRAFLUOROPROPENE AND 2,3,3,3-TETRAFLUOROPROPENE Public/Granted day:2011-10-13
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