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:
Dec. 23, 1980
Filed:
Mar. 07, 1979
Applicant:
Inventor:
Riekert Kok, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564259 ; 423D / ; 2604 / ;
Abstract
The invention relates to a process for the preparation of a 1,2-dioxime of the general formula A--C(.dbd.NOH)--C(.dbd.NOH)--R, wherein A represents an aromatic group and R a hydrocarbyl group or a hydrogen atom, which process comprises the reaction of hydroxylamine with one or more hydroxyiminoketones of formula A--C(.dbd.O)--C(.dbd.NOH)--R or of formula A--C(.dbd.NOH)--C(.dbd.NOH)--R in the presence of a nickel compound forming a complex with the 1,2-dioxime.