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:
Dec. 17, 1985
Filed:
Jul. 09, 1984
Applicant:
Inventors:
Martin Burli, Magden, CH;
Jacques Bersier, Riehen, CH;
Eric Plattner, Seltisberg, CH;
Hans-Ulrich Herrmann, Basel, CH;
Assignee:
Ciba Geigy AG, Basel, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
260352 ;
Abstract
The invention describes a process for the production of benzanthrone by reacting anthraquinone with glycerol and/or acrolein, using anthrone as reducing agent. Benzanthrone is an important intermediate for dyes and is used in particular for the preparation of vat dyes.