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:
May. 23, 1978
Filed:
Nov. 01, 1976
Applicant:
Inventors:
Harry E Buckholtz, Kenmore, NY (US);
Arun C Bose, Tonawanda, NY (US);
Assignee:
Hooker Chemicals & Plastics Corp., Niagara Falls, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2603 / ;
Abstract
Thianthrene compounds are prepared by adding sulfur monochloride to an excess of a benzene compound in the presence of aluminum chloride, and reacting to form a thianthrene compound as an insoluble aluminum chloride complex; slurrying the complex in an inert organic liquid; treating the slurry with a Lewis base, such as ammonia to free the thianthrene compound from the complex.