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. 15, 2004
Filed:
Nov. 01, 2002
Applicant:
Inventors:
Osamu Sato, Miyagi, JP;
Kiyotaka Hatakeda, Miyagi, JP;
Yutaka Ikushima, Miyagi, JP;
Kazuo Torii, Miyagi, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
C07D / ;
Abstract
A method for producing a lactam by using an organic solvent as a substrate solution, which makes it possible to introduce a high-concentration oxime into flowing high-temperature and high-pressure water, thereby allowing the high-concentration lactam to be synthesized with a high efficiency. With this method, the lactam is continuously synthesized at a high rate from the oxime under high-temperature and high-pressure water mixture conditions within a temperature range of no less than 250° C. and a pressure range of no less than 15 MPa.