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:
Feb. 05, 2019
Filed:
Oct. 27, 2015
Toray Industries, Inc., Tokyo, JP;
Masateru Ito, Kamakura, JP;
Daijiro Tsukamoto, Kamakura, JP;
Kenji Kawamura, Kamakura, JP;
Kohei Yamashita, Nagoya, JP;
Masato Akahira, Nagoya, JP;
Katsushige Yamada, Kamakura, JP;
Koji Yamauchi, Nagoya, JP;
TORAY INDUSTRIES, INC., Tokyo, JP;
Abstract
A method for selective production of ε-caprolactam, wherein a substance inducible from a biomass resource is used as a material; the reaction process is short; ammonium sulfate is not produced as a by-product; and production of by-products is suppressed; is disclosed. The method for producing ε-caprolactam comprises the step of reacting a particular compound inducible from a biomass resource, such as α-hydromuconic acid, 3-hydroxyadipic acid, or 3-hydroxyadipic acid-3,6-lactone, or a salt thereof with hydrogen or ammonia.