Title:
METHOD FOR PRODUCING DICHLOROGLYOXIME
Document Type and Number:
WIPO Patent Application WO/2018/139485
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a dichloroglyoxime production method by which dichloroglyoxime, which can be used as an industrial anti-bacterial agent, a preservative, a slime control agent or the like, can be obtained with greater safety and efficiency. In order to solve this problem, the present invention provides a method for producing dichloroglyoxime by reacting glyoxal with hydroxylamine and then chlorinating, the method additionally including: a step of incorporating a water-immiscible low boiling point organic solvent; a step of incorporating 20-90% of water following completion of the chlorination so as to cause separation into two layers, and then separating the organic layer; and a step of removing a water-miscible low boiling point organic solvent from the organic layer.
Inventors:
KAWASHIMA RYUICHI (JP)
KANAYAMA MASAHIRO (JP)
KANAYAMA MASAHIRO (JP)
Application Number:
PCT/JP2018/002116
Publication Date:
August 02, 2018
Filing Date:
January 24, 2018
Export Citation:
Assignee:
FUJI SANGYO CO LTD (JP)
International Classes:
C07C249/08; C07C249/12; C07C251/38
Foreign References:
| JPH0733728A | 1995-02-03 | |||
| JPH11236362A | 1999-08-31 | |||
| JP2003012628A | 2003-01-15 | |||
| JP2014076985A | 2014-05-01 | |||
| US4539405A | 1985-09-03 |
Attorney, Agent or Firm:
KANAYAMA, Masahiro (JP)
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