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:
Oct. 21, 1980
Filed:
Nov. 06, 1978
Applicant:
Inventors:
Friedrich Bruhne, Krefeld, DE;
Karl-August Lipper, Krefeld, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568437 ;
Abstract
An improved process for the preparation of benzaldehyde by hydrolysis of benzal chloride wherein hydrolysis is carried out at an elevated temperature in the presence of an excess of aqueous hydrochloric acid and in the absence of another catalyst.