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:
Jul. 23, 2002
Filed:
Feb. 18, 2000
Mark B. Erman, Atlantic Beach, FL (US);
Melissa J. Williams, Jacksonville, FL (US);
Carlos G. Cárdenas, Jacksonville, FL (US);
Millennium Speciality Chemicals, Inc., Jacksonville, FL (US);
Abstract
A process for obtaining Ketone of formula 1a,b, which includes contacting a Ketone represented by formula 2a,b with a first catalyst under conditions and for a time sufficient to obtain an intermediate mixture, which intermediate mixture contains a Ketone represented by formula 4a,b; and contacting the intermediate mixture, or a fraction thereof, with a second catalyst under conditions effective to provide a product containing a Ketone of formula 1a,b. Moreover, the first catalyst preferably differs from the second catalyst with the first catalyst preferably being an isomerization catalyst and the second catalyst being a cyclization catalyst. The process is capable of providing unexpectedly incresased yields of both Ketone 4 and Ketone 1.