Patent · US Expired

Dyestuff mixture

US4539009A · kind A · utility

2Cited by

3References

5Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Horst Nickel · Leverkusen, DE
Hans Otten · London, CA

Key dates

Filing date	Nov 2, 1984
Grant date	Sep 3, 1985
Priority date	—
Expiry date	Nov 2, 2004

Classification

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

Abstract

Mixtures of dyestuffs of the formula I ##STR1## and of the formula II ##STR2## wherein R=alkyl, PA1 R.sub.1 =H or R and PA1 R.sub.2 /R.sub.3 =R.sub.1 or alkoxy, are distinguished by being readily soluble in hard water and produce satisfactory golden yellow dyeings on polyamide fibres.

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