Title:
精製した濃縮水性ロイコインジゴ塩溶液
Document Type and Number:
Japanese Patent JP7011042
Kind Code:
B2
Abstract:
Aqueous leucoindigo solution comprising an aromatic amine, in particular aniline or aniline and N-methylaniline, wherein the concentration of the aromatic amine is below 200 ppm, wherein the leucoindigo salt in the solution is in the form of a mixed sodium and potassium salt, wherein the molar ratio of sodium to potassium is in the range of from above 3:1 to 10:1, preferably wherein the concentration of the salt is in the range of from above 25 to 45% by weight, based on the total weight of the solution.
Inventors:
Elwin Ruchichi
Jörg Demus
Jörg Demus
Application Number:
JP2020507600A
Publication Date:
January 26, 2022
Filing Date:
August 10, 2018
Export Citation:
Assignee:
Alfroma IP Gezel Shaft Mitt Beschlenktel Haftung
International Classes:
C09B7/02; C09B67/20; D06P1/00
Domestic Patent References:
| JP2002520469A | ||||
| JP2004521965A | ||||
| JP2000512673A | ||||
| JP2009197353A |
Foreign References:
| WO2004024826A1 |
Attorney, Agent or Firm:
Aoki Atsushi
Shinji Mihashi
Youichi Watanabe
Nakajima Masaru
Ryotaro Takei
Kazumi Nakamura
Shinji Mihashi
Youichi Watanabe
Nakajima Masaru
Ryotaro Takei
Kazumi Nakamura