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:
Jun. 01, 1976
Filed:
Jul. 17, 1974
Applicant:
Inventors:
Assignees:
Montedison S.p.A., Milan, IT;
Aziende Colori Nazionali Affini ACNA S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
260278 ; 260155 ; 260272 ;
Abstract
1-AZA-2-HYDROXYBENZANTHRONE, USEFUL AS AN INTERMEDIATE FOR SYNTHESIZING DYES IS OBTAINED BY THE DIRECT REACTION OF ALKYL ESTERS OF ANTHRAQUINONE-1-ACETIC ACID WITH AMMONIA IN HYDROXYLATED SOLVENTS AND IN THE PRESENCE OF STRONG BASES AND/OR REDUCING SUBSTANCES.