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Process for making 1,3,3,3-tetrafluoropropene

  • US 8,829,254 B2
  • Filed: 02/04/2013
  • Issued: 09/09/2014
  • Est. Priority Date: 02/14/2012
  • Status: Active Grant
First Claim
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1. A process for making CF3CH═

  • CHF comprising the steps of;

    (a) converting 1,2-dichloroethylene to the compound CCl3CHClCHCl2 by an addition reaction with CCl4;

    (b) converting CCl3CHClCHCl2 to the compound CCl2

    CHCHCl2 by a dechlorination reaction;

    (c) fluorinating the product of step (b) to form the compound CF3CH2CHClF; and

    (d) dehydrochlorinating the product of step (c) to form the compound CF3CH═

    CHF.

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