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:
Jan. 18, 1977
Filed:
Feb. 26, 1971
Applicant:
Inventor:
Walter Gomm, Cologne, DT;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
2602 / ; 8 1 / ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 26032627 ; 2603 / ; 2603 / ; 26032662 ; 2603269 ;
Abstract
Process for the manufacture of dyestuffs of the general formula ##STR1## wherein R, R.sub.1, R.sub.2 represent an alkyl, cycloalkyl, aralkyl or aryl radical or R is alkyl bonded to the naphthalene ring or R.sub.1 is alkyl bonded to R.sub. 2 or bonded to the adjacent six-membered ring and X stands for an anion by condensation of naphtholactames with aromatic amines with the addition of phosphorus pentoxide.