Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Thomas W. Weir0
Andrew P. Kahn0
Date of Patent
December 26, 2006
Patent Application Number
10791982
Date Filed
March 3, 2004
Patent Primary Examiner
Patent abstract
A method for purifying N-methyl-2-pyrrolidone is disclosed. The method comprises treating N-methyl-2-pyrrolidone with an alumina that desorbs less than 100 μmol/g of isobutylene between 225° C. and 400° C. in a standard tert-butyl alcohol dehydration test. The method enables the removal of at least about 80% of amine impurities or at least about 60% of APHA color from the NMP at 4 bed volumes treated.
Timeline
No Timeline data yet.
Further Resources
No Further Resources data yet.
