Patent · US Expired

Process for dyeing amide-containing fibre materials

US4556401A · kind A · utility

6Cited by

3References

2Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Robert Weitz · Cologne, DE
Rutger Neeff
Herbert Hugl

Key dates

Filing date	Aug 3, 1984
Grant date	Dec 3, 1985
Priority date	—
Expiry date	Aug 3, 2004

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S534/01
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The partly known blue dyestuffs of the formula ##STR1## wherein R.sub.1 denotes hydrogen, alkyl, aralkyl, alkenyl, cycloalkyl or aryl, PA1 R.sub.2 denotes hydrogen or alkyl, PA1 Me.sup.(+) denotes a cation and PA1 n denotes 1 or 2, are highly suitable for the trichromatic dyeing of polyamide fibre materials, producing level dyeings thereon with a good standard of fastness.

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