Patent · US Expired

Alkaline aqueous solutions and use thereof in processes for dyeing cellulosic textile materials

US6530961B1 · kind B1 · utility

3Cited by

25References

16Claims

0Family size

Assignee

DyStar Textilfarben GmbH & Co. Deutschland KG · DE

Inventors

Andreas Schrell · Hofheim, DE
Daniele Negri · Busto Arsizio, IT

Key dates

Filing date	Jul 31, 2000
Grant date	Mar 11, 2003
Priority date	—
Expiry date	Jul 31, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S8/918
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Described are aqueous solutions comprising sodium hydroxide and potassium carbonate in a molar ratio of 1:1.7 to 1:0.5, which are useful for preparing alkaline dyeing liquors, especially padding liquors, of fiber-reactive dyes for producing dyeings on cellulosic textile material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.