Title:
クロロフェノール塩を精製、回収および転換するためならびにそれから調製される生成物を調製および回収するための方法
Document Type and Number:
Japanese Patent JP7010944
Kind Code:
B2
Abstract:
The present invention generally relates to processes for purification, recovery, and conversion of chlorophenol salts (e.g., 2,5-dichlorophenol and salts thereof). In various aspects, the present invention is related to removing one or more impurities from chlorophenol salt-containing process streams and/or recovering chlorophenol salts from process streams for use of the recovered chlorophenol elsewhere in an integrated process. Process streams that may be treated in accordance with the present invention include those incorporating one or more chlorophenol salts in a feed mixture and also those where one or more chlorophenol salts are present in a product or by-product stream of an integrated process. For example, conversion processes of the present invention are suitable as one piece of an integrated process for producing 3,6-dichloro-2-methoxybenzoic acid (dicamba) or a salt or ester thereof or a process for producing 2,4-dichlorophenoxyacetic acid (2,4-D) or a salt or ester thereof. The present invention further relates to processes for preparation, purification, and recovery of intermediates formed in integrated processes utilizing chlorophenol salts such as 2,5-dichlorophenol as starting material, including the intermediate 3,6-dichlorosalicylic acid (3,6-DCSA) formed during preparation of dicamba from 2,5-dichlorophenol.
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Inventors:
Howard Sea Burke
Bruno de Corto
John Joseph Parlow
Amy E. Strawman
Yang Jun Chiu
Bruno de Corto
John Joseph Parlow
Amy E. Strawman
Yang Jun Chiu
Application Number:
JP2019530431A
Publication Date:
February 10, 2022
Filing Date:
December 04, 2017
Export Citation:
Assignee:
Monsanto Technology LLC
International Classes:
C07C37/74; C07C37/68; C07C39/30; C07C51/48; C07C65/05
Domestic Patent References:
| JP2007196171A | ||||
| JP2007091720A | ||||
| JP2004002434A | ||||
| JP2005526075A |
Foreign References:
| CN105859508A |
Other References:
社団法人日本化学会,化学便覧基礎編改訂5版,2004年02月20日,II-158~II-159
安全データーシート,ペンタクロロフェノールナトリウム,職場のあんぜんサイト,2008年10月15日,URL:https://anzeninfo.mhlw.go.jp/anzen/gmsds/131-52-2.html,[検索日2021/06/24]
安全データーシート,ペンタクロロフェノールナトリウム,職場のあんぜんサイト,2008年10月15日,URL:https://anzeninfo.mhlw.go.jp/anzen/gmsds/131-52-2.html,[検索日2021/06/24]
Attorney, Agent or Firm:
Makoto Ono
Kanayama Sage
Yoshiyuki Tsubokura
Kazuki Shigemori
Kenji Ando
Hidehiko Ichikawa
Yoshie Sakurada
Yosuke Kawasaki
Takuya Gomibuchi
Youichi Iino
Yusuke Ichikawa
Masahiro Moriyama
Takashi Kono
Yoshikazu Iwase
Yasufumi Shiroyama
Kanayama Sage
Yoshiyuki Tsubokura
Kazuki Shigemori
Kenji Ando
Hidehiko Ichikawa
Yoshie Sakurada
Yosuke Kawasaki
Takuya Gomibuchi
Youichi Iino
Yusuke Ichikawa
Masahiro Moriyama
Takashi Kono
Yoshikazu Iwase
Yasufumi Shiroyama