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. 03, 2017
Filed:
Apr. 25, 2014
Applicant:
Keki Hormusji Gharda, Maharashtra, IN;
Inventor:
Keki Hormusji Gharda, Maharashtra, IN;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 498/22 (2006.01); C08K 5/3417 (2006.01); C08K 5/3437 (2006.01); C07D 209/62 (2006.01);
U.S. Cl.
CPC ...
C07D 498/22 (2013.01); C07D 209/62 (2013.01); C08K 5/3417 (2013.01); C08K 5/3437 (2013.01);
Abstract
The present disclosure relates to a benzoyl substituted carbazole-dioxazine pigment and its preparation. The process involves benzoylation of 3-nitro-N-ethylcarbazole in monochlorobenzene using benzoylchloride and ferric chloride to yield 3-nitro-6-benzoyl-N-ethyl carbazole, which on catalytic hydrogenation and subsequent condensation with chloranil and cyclization yields benzoyl substituted carbazole-dioxazine pigment.