Patent · US Expired

Aqueous dye solutions

US7909892B2 · kind B2 · utility

7Cited by

7References

13Claims

0Family size

Assignee

BASF SE

Inventors

Holger Lautenbach · Weil am Rhein, DE
Adolf Kaser · Bottmingen, CH
Michael Heneghan · Rheinfelden (Baden), DE

Key dates

Filing date	Jan 21, 2003
Grant date	Mar 22, 2011
Priority date	—
Expiry date	Jul 31, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S8/919
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention relates storage stable aqueous dye solutions comprising in which K is a residue of a coupling component of the acetoacetanilide, pyridone, pyrazolone or pyrimidine series and M is hydrogen, an alkali metal or alkaline earth metal, ammonium or alkyl ammonium, or a residue of the formulain which

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