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:
Feb. 19, 1991
Filed:
Jul. 12, 1989
Applicant:
Inventors:
Michele Pralus, Saint Cyr Au Mont D'Or, FR;
Jean-Claude Lecoq, Chaponost, FR;
Jean-Pierre Schirmann, Oullins, FR;
Assignee:
Produits Chimiques Uging Kuhlmann, Courbevoie, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549272 ;
Abstract
Process for manufacturing .SIGMA.- caprolactone by oxidation of cyclohexanone by means of a crude C.sub.2 -C.sub.4 percarboxylic acid solution, resulting from the reaction of hydrogen peroxide on the corresponding carboxylic acid in the presence of a weak acid catalyst, with continuous elimination of water by azeotropic entrainment, characterized in that the molar ratio of cyclohexanone used to the percarboxylic acid is between about 0.50 to 0.99.