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:
May. 31, 1977
Filed:
Mar. 08, 1976
Applicant:
Inventor:
Joel Le Ludec, Lyon, FR;
Assignee:
Rhone-Poulenc Industries, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2606 / ; 252472 ; 252440 ; 252428 ; 252441 ; 252437 ; 252444 ;
Abstract
A process is provided for the production of hydroxybenzaldehydes, especially salicylaldehyde, from the oxidation of the corresponding hydroxybenzyl alcohol, especially orthohydroxybenzyl alcohol, with oxygen in an aqueous alkaline medium in the presence of a noble metal catalyst, such as platinum or palladium, and in the presence of a co-catalyst containing bismuth.