Title:
キシリレンジアミンの製造方法
Document Type and Number:
Japanese Patent JP4729779
Kind Code:
B2
Abstract:
A method for producing xylylenediamine by hydrogenating phthalonitrile synthesized through ammoxidation of xylene, wherein phthalonitrile is trapped in an organic solvent (A) by bringing a gas produced through ammoxidation into direct contact with the organic solvent (A), and hydrogenation including adding liquid ammonia to the resultant mixture is carried out without separation of phthalonitrile trapped in the organic solvent (A). Through this method, the phthalonitrile can be readily recovered from the produced gas and at high yield without need for new equipment, and xylylenediamine can be efficiently produced through hydrogenation. Xylylenediamine of high purity can be obtained by subjecting the produced xylylenediamine to extraction by use of an organic solvent (B) and water.
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Inventors:
Kenichi Nakamura
Shin Otsuka
Fumada Kosuge
Osamu Shitara
Shin Otsuka
Fumada Kosuge
Osamu Shitara
Application Number:
JP2000290459A
Publication Date:
July 20, 2011
Filing Date:
September 25, 2000
Export Citation:
Assignee:
Mitsubishi Gas Chemical Co., Ltd.
International Classes:
C07C209/00; C07C209/48; C07B61/00; C07C211/27; C07C253/28; C07C255/51
Domestic Patent References:
| JP35004511B1 | ||||
| JP5170724A | ||||
| JP54016445A | ||||
| JP11246506A | ||||
| JP49031630B1 | ||||
| JP49133339A |