Patent number: 8835699
Abstract: The invention relates to a process for preparing 2,3,3,3-tetrafluoropropene (CF3CF?CH2), performed using the steps of dehydrohalogenating 1,1,1,2,2-pentafluoropropane (CH3CF2CF3, HFC-245ca) 1,1,1,2-tetrafluoro-2-chloropropane, 1,1,1,2,3-pentafluoropropane (CH2FCHFCF3, HFC-245eb) and/or 1,1,1,2-tetrafluoro-3-chloropropane in the presence of a base, and converting a trifluorodichloropropane or a difluorotrichloropropane or a fluorotetrachloropropane to CH3CF2CF3, 1,1,1,2-tetrafluoro-2-chloropropane, CH2FCHFCF3, and/or 1,1,1,2-tetrafluoro-3-chloropropane.
Type:
Grant
Filed:
April 1, 2013
Date of Patent:
September 16, 2014
Assignee:
Mexichem Amanco Holding S.A. de C.V
Inventors:
Andrew Paul Sharratt, Robert Elliott Low, John Charles McCarthy
Patent number: 8822740
Abstract: The invention relates to a process for preparing 2,3,3,3-tetrafluoropropene (CF3CF?CH2), performed using the steps of dehydrohalogenating 1,1,1,2,2-pentafluoropropane (CH3CF2CF3, HFC-245ca) 1,1,1,2-tetrafluoro-2-chloropropane, 1,1,1,2,3-pentafluoropropane (CH2FCHFCF3, HFC-245eb) and/or 1,1,1,2-tetrafluoro-3-chloropropane in the presence of a base, and converting a trifluorodichloropropane or a difluorotrichloropropane or a fluorotetrachloropropane to CH3CF2CF3, 1,1,1,2-tetrafluoro-2-chloropropane, CH2FCHFCF3, and/or 1,1,1,2-tetrafluoro-3-chloropropane.
Type:
Grant
Filed:
June 13, 2013
Date of Patent:
September 2, 2014
Assignee:
Mexichem Amanco Holding S.A. de C.V.
Inventors:
Andrew Paul Sharratt, Robert Elliott Low, John Charles McCarthy
Publication number: 20130274528
Abstract: The invention relates to a process for preparing 2,3,3,3-tetrafluoropropene (CF3CF?CH2), performed using the steps of dehydrohalogenating 1,1,1,2,2-pentafluoropropane (CH3CF2CF3, HFC-245ca) 1,1,1,2-tetrafluoro-2-chloropropane, 1,1,1,2,3-pentafluoropropane (CH2FCHFCF3, HFC-245eb) and/or 1,1,1,2-tetrafluoro-3-chloropropane in the presence of a base, and converting a trifluorodichloropropane or a difluorotrichloropropane or a fluorotetrachloropropane to CH3CF2CF3, 1,1,1,2-tetrafluoro-2-chloropropane, CH2FCHFCF3, and/or 1,1,1,2-tetrafluoro-3-chloropropane.
Type:
Application
Filed:
June 13, 2013
Publication date:
October 17, 2013
Applicant:
MEXICHEM AMANCO HOLDING S.A. DE C.V.
Inventors:
Andrew Paul Sharratt, Robert Elliott Low, John Charles McCarthy
Publication number: 20130217927
Abstract: The invention relates to a process for preparing 2,3,3,3-tetrafluoropropene (CF3CF?CH2), performed using the steps of dehydrohalogenating 1,1,1,2,2-pentafluoropropane (CH3CF2CF3, HFC-245ca) 1,1,1,2-tetrafluoro-2-chloropropane, 1,1,1,2,3-pentafluoropropane (CH2FCHFCF3, HFC-245eb) and/or 1,1,1,2-tetrafluoro-3-chloropropane in the presence of a base, and converting a trifluorodichloropropane or a difluorotrichloropropane or a fluorotetrachloropropane to CH3CF2CF3, 1,1,1,2-tetrafluoro-2-chloropropane, CH2FCHFCF3, and/or 1,1,1,2-tetrafluoro-3-chloropropane.
Type:
Application
Filed:
April 1, 2013
Publication date:
August 22, 2013
Applicant:
MEXICHEM AMANCO HOLDING S.A. DE C.V.
Inventors:
Andrew Paul Sharratt, Robert Elliott Low, John Charles Mccarthy