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. 10, 1981
Filed:
Apr. 08, 1976
Applicant:
Inventor:
Klaus Leverenz, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C09B / ; C09B / ; C09B / ;
U.S. Cl.
CPC ...
260141 ; 260156 ; 260202 ; 260204 ; 260205 ; 260206 ; 260207 ; 2602071 ; 2602075 ;
Abstract
The invention relates to a process for diazotizing aromatic amines which are not diazotizable, or only incompletely diazotizable, in aqueous media containing mineral acid. It is characterized in that the diazotization is effected by means of nitrosyl compounds in organic, dipolar, aprotic solvents which do not undergo a chemical reaction with the diazonium salts of the aromatic amines. The new process is distinguished by less contamination of the effluent.