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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.:

US 10364218 B1

PDFFull Text
Expired
Date of Patent:
Jul. 30, 2019

Filed:

Sep. 08, 2016

Method of producing epsilon-caprolactam

Applicant:

Toray Industries, Inc., Tokyo, JP;

Inventors:

Daijiro Tsukamoto, Kamakura, JP;

Masateru Ito, Kamakura, JP;

Katsushige Yamada, Kamakura, JP;

Kohei Yamashita, Nagoya, JP;

Masato Akahira, Nagoya, JP;

Koji Yamauchi, Nagoya, JP;

Assignee:

Toray Industries, Inc., Tokyo, JP;

Attorney:

DLA Piper LLP (US)

Primary Examiner:

Emily A Bernhardt

Assistant Examiner:

Laura M Daniel

Int. Cl.
CPC ...
C07D 201/08 (2006.01); B01J 23/44 (2006.01); C07D 223/10 (2006.01); C07C 59/245 (2006.01); B01J 21/04 (2006.01); B01J 21/06 (2006.01); B01J 21/08 (2006.01); B01J 21/18 (2006.01); B01J 23/20 (2006.01); B01J 23/26 (2006.01); B01J 23/42 (2006.01); B01J 23/46 (2006.01); B01J 23/72 (2006.01); C07B 61/00 (2006.01);
U.S. Cl.
CPC ...
C07D 201/08 (2013.01); B01J 21/04 (2013.01); B01J 21/063 (2013.01); B01J 21/066 (2013.01); B01J 21/08 (2013.01); B01J 21/18 (2013.01); B01J 23/20 (2013.01); B01J 23/26 (2013.01); B01J 23/42 (2013.01); B01J 23/44 (2013.01); B01J 23/464 (2013.01); B01J 23/466 (2013.01); B01J 23/468 (2013.01); B01J 23/72 (2013.01); C07C 59/245 (2013.01); C07D 223/10 (2013.01); C07B 61/00 (2013.01); Y02P 20/52 (2015.11);
Abstract

A method of producing ε-caprolactam from 3-oxoadipic acid includes: step 1 of mixing at least one selected from the group consisting of 3-oxoadipic acid and salts thereof with a catalyst and a solvent in the presence of hydrogen to produce 3-hydroxyadipic acid; and step 2 of reacting the 3-hydroxyadipic acid which is a product of step 1, a salt or carboxylic acid derivative thereof, or a mixture of these with hydrogen and ammonia.

Find Patent Forward Citations

Tsukamoto, Daijiro. (2019). Method of producing epsilon-caprolactam (U.S. Patent No. 10364218). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10364218

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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