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. 20, 2007
Filed:
Aug. 05, 2004
Gary Smith, Collegeville, PA (US);
Robert Cordova, Herrin, IL (US);
Johnson C. H. Chen, King of Prussia, PA (US);
Mabel Chen, West Chester, PA (US);
Gary Smith, Collegeville, PA (US);
Robert Cordova, Herrin, IL (US);
Johnson C. H. Chen, King of Prussia, PA (US);
Mabel Chen, West Chester, PA (US);
Arkema Inc., Philadelphia, PA (US);
Abstract
Methods of removing alkyl alkanesulfonate esters from aqueous or anhydrous compositions are provided. The invention provides methods for the conversion of alkyl alkanesulfonate esters of the formula RSOR' to the corresponding acids of the formula RSOH. The alkyl alkanesulfonate esters are present in an organic medium, which may contain significant amounts of water or which may be anhydrous or substantially anhydrous. In some embodiments, the invention provides methods for purifying aqueous or anhydrous alkanesulfonic acids by removing alkyl alkanesulfonate esters.