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:
Dec. 29, 1992
Filed:
Dec. 11, 1989
Applicant:
Inventors:
Bernard Capai, Viarmes, FR;
Guy Lartigau, Savigny Sur Orge, FR;
Assignee:
Societe Francaise d'Organo-Synthese, Courbevoie, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562537 ; 562577 ;
Abstract
Essentially pure and colorless laevulinic acid is produced by heating and ring-opening furfuryl alcohol in the presence of water and a strong non-oxidizing protonic acid, and which includes establishing a reaction medium containing water, the strong protonic acid and a reaction solvent amount of laevulinic acid, and progressively introducing the furfuryl alcohol into such reaction medium.