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:
May. 31, 2005
Filed:
Oct. 31, 2002
Applicants:
Ralph Newton Miller, Newark, DE (US);
Mario J. Nappa, Newark, DE (US);
Donald J. Toton, New Castle, DE (US);
Inventors:
Ralph Newton Miller, Newark, DE (US);
Mario J. Nappa, Newark, DE (US);
Donald J. Toton, New Castle, DE (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C017/00 ; C07C019/08 ; C07C021/18 ; C07C017/08 ; C07C023/00 ;
U.S. Cl.
CPC ...
Abstract
A process for the production of HFC-227ea from HF and HFP is provided. This process takes advantage of an azeotropic composition of HF and HFC-227ea in order to produce HFC-227ea essentially free of HF and recycle unreacted HF back to the reactor. The recycle of said azeotropic composition, also allows the use of HFC-227ea as a diluent to aid in control of reactor temperature for a highly exothermic reaction.