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. 27, 2006
Filed:
Apr. 06, 2004
Applicants:
Miyuki Oikawa, Niihama, JP;
Masami Fukao, Ritto, JP;
Inventors:
Miyuki Oikawa, Niihama, JP;
Masami Fukao, Ritto, JP;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 549/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In producing cyclohexanone oxime by a method comprising the step of reacting cyclohexanone, hydrogen peroxide and ammonia in the presence of titanium silicate, a brand-new titanium silicate and a recycled titanium silicate which has been recovered from a production method of cyclohexanone oxime are used. In accordance with the present invention, cyclohexanone is subjected to ammoximation by hydrogen peroxide and ammonia with suppressing the degradation- of titanium silicate as a catalyst, to produce cyclohexanone oxime with a high yield.