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. 07, 1983
Filed:
Jun. 11, 1980
Applicant:
Inventors:
Charles T Ratcliffe, Morristown, NJ (US);
Geza Pap, Morristown, NJ (US);
Assignee:
Allied Corporation, Morris Township, Morris County, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564420 ; 564413 ; 564421 ; 564422 ; 564163 ; 564166 ; 564167 ; 564170 ; 564171 ; 564172 ; 564180 ; 546-1 ; 546152 ; 2524 / ;
Abstract
In the reduction of di- or polynitro aromatic compounds by gaseous H.sub.2 S over a solid catalyst, addition of CO gas promotes formation of amino groups from all nitro groups in the molecule. A preferred embodiment is reduction of 2,4- and/or 2,6-dinitrotoluene in vapor phase at 325.degree. C. over a supported iron or supported cobalt catalyst on a support comprising alumina. The amino products are useful for production of polyurethane resins.
Ratcliffe, Charles. (1983). Catalytic reduction of nitro aromatic compounds with hydrogen sulfide (U.S. Patent No. 4387247). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4387247
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile