Patent · US Expired

Process for dyeing and printing cellulose fibres

US4290768A · kind A · utility

1Cited by

11References

1Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Rutger Neeff
Robert Kuth · Cologne, DE
Werner Kuhnel · Uttenreuth, DE
Wilhelm Gohrbandt · Leverkusen, DE

Key dates

Filing date	Jan 7, 1980
Grant date	Sep 22, 1981
Priority date	—
Expiry date	Jan 7, 2000

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S8/918
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

In order to dye and print cellulose fibres, which have been swollen with water-miscible swelling agents, or fibre mixtures containing such cellulose fibres, the fibres are treated with a dyestuff of the general formula ##STR1## wherein A denotes an optionally substituted anthraquinone radical, which can contain a further fused ring, PA1 X denotes oxygen or sulphur, PA1 Z denotes a mononuclear or binuclear aryl radical and PA1 n denotes 1 or 2, and the dyestuff is fixed by means of a heat treatment.

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