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:
Aug. 27, 1985
Filed:
Nov. 09, 1984
Applicant:
Inventors:
Velliyur N Rao, Wilmington, DE (US);
George E Heinsohn, Elkton, MD (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2604 / ;
Abstract
The process in which organic isocyanates are prepared by the oxidative dehydrogenation of the corresponding formamides is improved by operating the process in at least two adiabatic reaction stages in series where no more than 0.7 equivalent of oxygen is fed to the first stage.