Verfahren zum Färben von Faserprodukten auf Cellulosebasis

Details

Veröffentlichungs-Nr.

EP4722445

Anmeldetag

28. Mai 2024

Veröffentlichung

5. Dezember 2024

Rechtsraum

EP

IPC

D06P5/00, D06P3/58

Abstract

A dyeing method, including the steps of feeding water of a first temperature region of 5°C or higher and lower than 30°C or a second temperature region of 30°C or higher and lower than 40°C to a dyeing bath and introducing cellulose fibers or a fiber product containing cellulose fibers thereto, under the proviso that the water-feeding and the introducing are performed in any order, raising the temperature from the first temperature region to a second temperature region of 30°C or higher and lower than 40°C and from the second temperature region to a third temperature region of 40°C or higher and lower than 70°C, or alternatively, raising the temperature from the second temperature region to the third temperature region of 40°C or higher and 70°C or lower, maintaining a third temperature within the third temperature region for a predetermined period of time, introducing a reactive dye at a temperature higher than the first temperature region; and introducing a mixture of an inorganic salt and an alkaline agent in three or more divided portions separately from introducing the reactive dye at a temperature equal to or higher than the second temperature region.

Anmelder

Firma

ASAHI KASEI KABUSHIKI KAISHA

Land

🇯🇵 Japan

Fachgebiete