非常に低いアニリン含有量を有するロイコインジゴ塩溶液とその製造方法 - Alfroma IP Gezel Shaft Mitt Beschlenktel Haftung

Title:

非常に低いアニリン含有量を有するロイコインジゴ塩溶液とその製造方法

Document Type and Number:

Japanese Patent JP7295844

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.

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Inventors:

Elwin Ruchichi
Jörg Demus
david hyett
Michele Katherine Christianne Janssen
Karin Hendrika Maria Bessenbindel
Pierre El. Westenborks
Marinus Petrus Wilhelms Maria Reichels

Application Number:

JP2020507643A

Publication Date:

June 21, 2023

Filing Date:

August 10, 2018

Export Citation:

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Assignee:

Alfroma IP Gezel Shaft Mitt Beschlenktel Haftung

International Classes:

C09B7/02; C09B67/20; D06P1/32

Domestic Patent References:

JP2002520469A
JP2020530518A
JP2020530517A
JP7157684A

Foreign References:

WO2004024826A1
US2130878

Attorney, Agent or Firm:

Atsushi Aoki
Shinji Mihashi
Junichi Tsuruta
Tomohiro Minamiyama
Youichi Watanabe
Kazuhiro Nakamura

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