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:
Apr. 03, 1979
Filed:
May. 22, 1978
Applicant:
Inventors:
Tom R Fiske, Baton Rouge, LA (US);
Daniel W Baugh, Jr, Baton Rouge, LA (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
2606534 ; 2606533 ; 2606537 ;
Abstract
Chlorine atoms in chlorinated lower aliphatic hydrocarbons are replaced by fluorine in the vapor phase reaction of the chlorinated hydrocarbons with aqueous HF at 275.degree. C.- 425.degree. C. in the presence of a metal fluoride catalyst, particularly where the metal is one or more of aluminum, nickel, or chromium. The fluorinated products are blowing agents, refrigerants, monomers, or intermediates for making them.