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:
Apr. 18, 1978
Filed:
Jan. 18, 1977
David Anthony Salter, Sawbridgeworth, EN;
Norman Frederick Scilly, Bishop's Stortford, EN;
Keith Ellis Watson, Thorverton, near Exeter, EN;
Abstract
In a process for the production of the explosive material 2,2',4,4',6,6'-hexanitrostilbene in which 2,4,6-trinitrotoluene is reacted with an alkali or alkaline earth metal hypochlorite in a solution to precipitate the product, the yield is improved by adding to the mixture, subsequent to commencement of the reaction, a nitrogeneous base. The nitrogeneous base is particularly one having a pKa of 9.25 to 11.25 and an organic amine is especially preferred. The base is added at least 0.5 minute after starting the reaction, and the mixture is stood thereafter for a period which is preferably about 2 hours.