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. 25, 2012
Filed:
May. 19, 2009
Junichi Kugimoto, Ube, JP;
Nobuhiro Ii, Ube, JP;
Takashi Doi, Ube, JP;
Satoru Fujitsu, Ube, JP;
Tadashi Gotou, Ube, JP;
Hideo Shimomura, Ube, JP;
Ryouta Yasumatsu, Ube, JP;
Joji Kawai, Ube, JP;
Junichi Kugimoto, Ube, JP;
Nobuhiro Ii, Ube, JP;
Takashi Doi, Ube, JP;
Satoru Fujitsu, Ube, JP;
Tadashi Gotou, Ube, JP;
Hideo Shimomura, Ube, JP;
Ryouta Yasumatsu, Ube, JP;
Joji Kawai, Ube, JP;
UBE Industries, Ltd., Ube-shi, JP;
Abstract
The present invention relates to a process for producing laurolactam from cyclododecanone oxime by liquid-phase rearrangement reaction using trichlorotriazine as a rearrangement catalyst. The present invention can provide a process which can solve the problem of termination of the reaction at a certain conversion, can prevent an inactive precipitate generated from trichlorotriazine from precipitating in the course of the reaction process, and can remove an inactive precipitate, an active intermediate and a residual catalyst.