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:
Apr. 17, 1979
Filed:
Dec. 01, 1977
Applicant:
Inventor:
Joachim Schneider, Krefeld, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
260577 ; 2605 / ; 260574 ; 2605 / ; 2605 / ; 2605 / ;
Abstract
An improvement in a process for the alkylation of an aromatic amine by contacting an aromatic amine with an alcohol in the presence of phosphoric acid, the improvement residing in including in the phosphoric acid an aliphatic amine containing at least one aliphatic radical having more then 3 carbon atoms, a phosphoric acid salt of said aliphatic amine or a quaternary ammonium salt of said aliphatic amine.