Title:
ロイコ型色原体含有水溶液の保存方法
Document Type and Number:
Japanese Patent JP5902098
Kind Code:
B2
Abstract:
The present invention provides: a method for preserving an aqueous solution containing a leuco chromogen, comprising adding a compound having at least one substituent selected from the group consisting of a nitroso group and an azo group and having an ability to coordinate a metal ion or a salt thereof to the aqueous solution containing a leuco chromogen; a method for stabilizing a leuco chromogen, comprising allowing the leuco chromogen to coexist in an aqueous solution comprising a compound having at least one substituent selected from the group consisting of a nitroso group and an azo group and having an ability to coordinate a metal ion or a salt thereof; and a liquid reagent comprising a leuco chromogen and a compound having at least one substituent selected from the group consisting of a nitroso group and an azo group and having an ability to coordinate a metal ion or a salt thereof.
Inventors:
Seiya yoyo
Application Number:
JP2012548775A
Publication Date:
April 13, 2016
Filing Date:
December 12, 2011
Export Citation:
Assignee:
Kyowa Medex Co., Ltd.
International Classes:
C09B67/00; C07C309/14; C07D213/76; C09B21/00; C09B67/44
Domestic Patent References:
| JP2010189662A | 2010-09-02 | |||
| JP2005110507A | 2005-04-28 | |||
| JP2005524071A | 2005-08-11 | |||
| JP2008210968A | 2008-09-11 | |||
| JP2010189662A | 2010-09-02 | |||
| JP2005110507A | 2005-04-28 | |||
| JP2005524071A | 2005-08-11 | |||
| JP2008210968A | 2008-09-11 |
Foreign References:
| WO2005088305A1 | 2005-09-22 | |||
| WO2005088305A1 | 2005-09-22 |
Attorney, Agent or Firm:
Masaki Hirota