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:
Aug. 22, 2006
Filed:
Oct. 16, 2003
Stephen Owens, White Pine, TN (US);
Andrew Jackson, El Dorado, AR (US);
Vimal Sharma, El Dorado, AR (US);
Mitchel Cohn, West Lafayette, IN (US);
John Cheng-ping Qian, West Lafayette, IN (US);
Julia Ann Sacarias, El Dorado, AR (US);
Yuichi Iikubo, West Lafayette, IN (US);
Stephen Owens, White Pine, TN (US);
Andrew Jackson, El Dorado, AR (US);
Vimal Sharma, El Dorado, AR (US);
Mitchel Cohn, West Lafayette, IN (US);
John Cheng-Ping Qian, West Lafayette, IN (US);
Julia Ann Sacarias, El Dorado, AR (US);
Yuichi Iikubo, West Lafayette, IN (US);
Great Lakes Chemical Corporation, West Lafayette, IN (US);
Abstract
Methods and materials are provided for the production and purification of halogenated compounds and intermediates in the production of 1,1,1,3,3-pentafluoropropane. In a preferred embodiment, the process steps include: (1) reacting carbon tetrachloride with vinyl chloride to produce 1,1,1,3,3-pentachloropropane; (2) dehydrochlorinating the 1,1,1,3,3-pentachloropropane with a Lewis acid catalyst to produce 1,1,3,3-tetrachloropropene; (3) fluorinating the 1,1,3,3-tetrachloropropene to produce 1-chloro-3,3,3-trifluoropropene; (4) fluorinating the 1-chloro-3,3,3-trifluoropropene to produce a product mixture containing 1,1,1,3,3-pentafluoropropane; and (5) separating 1,1,1,3,3-pentafluoropropane from by-products.