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:
Nov. 25, 2008
Filed:
Jun. 01, 2007
P. Veeraraghavan Ramachandran, West Lafayette, IN (US);
Kamlesh J. Padiya, Maharashtra, IN;
Venkatram R. Mereddy, Duluth, MN (US);
P. Veeraraghavan Ramachandran, West Lafayette, IN (US);
Kamlesh J. Padiya, Maharashtra, IN;
Venkatram R. Mereddy, Duluth, MN (US);
Great Lakes Chemical Corp., West Lafayette, IN (US);
Abstract
The invention includes methods for preparing halohydrins and epoxides. A method of preparing halohydrins can include exposing (RCHXCHO—)SOto RCOOH to produce RCHXCHCOORand hydrolyzing the RCHXCHCOORto produce the halohydrin RCHXCHOH. Rand Rcan be the same or different single elements and/or organic groups and X can be a halogen. A method of preparing an epoxide can include combining a sulfuric acid containing solution with a halogen to produce a first mixture and exposing the first mixture to trifluoropropene to produce a second mixture. The second mixture can be combined with acetic acid to produce an acetyl halohydrin of trifluoropropene and the acetyl halohydrin can be hydrolyzed to form a halohydrin of trifluoropropene. The halohydrin can be converted to a trifluoropropyl epoxide.