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. 24, 1990
Filed:
Nov. 22, 1988
Applicant:
Inventors:
Gerhard Diekhaus, Oberhausen, DE;
Harald Kappesser, Oberhausen, DE;
Assignee:
Hoechst Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568461 ; 568463 ;
Abstract
A process for the preparation of alpha-alkylacroleins from aldehydes and formaldehyde. The reaction takes place in the presence of a secondary amine and a carboxylic acid having up to 5 carbon atoms, and is performed in two stages so that, in the first stage, part of the carboxylic acid is added to the reaction mixture and, in the second stage, the remaining carboxylic acid is added.