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, 1977
Filed:
Oct. 03, 1975
Earl Phillip Moore, Jr, Hockessin, DE (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
The preparation of aliphatic azodinitriles by a process comprising reacting an alpha-aminonitrile selected from ##STR1## and mixtures thereof wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are selected from (1) hydrocarbyl radicals of 1 to 8 carbon atoms, (2) hydrocarbyl radicals of 1 to 8 carbon atoms substituted with carboxyl, hydroxyl or --OR wherein R is selected from a hydrocarbyl radical of 1 to 4 carbon atoms, (3) cyclohydrocarbyl radicals of 3 to 6 carbon atoms and (4) cyclohydrocarbyl radicals of 3 to 11 carbon atoms formed by combining R.sub.1 and R.sub.2 or R.sub.3 and R.sub.4 with 5 to 15% by weight based on the reaction mixture of a metal hypochlorite, M(OCl).sub.x where M is selected from sodium, potassium or calcium and x is the valence of M, in an aqueous medium in the presence of 0.25 to 10% by weight, based on the weight of aminonitrile, of a surface active compound or mixtures thereof having an HLB of 8 to 35 at a temperature of -10.degree. C to 30.degree. C, said hypochlorite and alpha-aminonitrile being present in an equivalent ratio of 1:1 to 2:1 of hypochlorite to aminonitrile and recovering from the reaction mixture an aliphatic azodinitrile of the formula ##STR2##