Patent · US Expired

Process for dyeing wool and blends thereof with other fibres using reactive dyes and colorless fiber-reactive dyeing assistant

US5207799A · kind A · utility

0Cited by

6References

14Claims

0Family size

Assignee

Ciba-Geigy · US

Inventors

Gerhard Back · Lörrach, DE
Klaus Hannemann · Lörrach, DE
Josef Koller · Erkrath, DE

Key dates

Filing date	Aug 27, 1991
Grant date	May 4, 1993
Priority date	—
Expiry date	Aug 27, 2011

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S8/917
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A process is described for fibre- and surface-level dyeing of wool and blends thereof with other fibers using a compound of formula (1) ##STR1## in which n is 0 or 1, and if n is 1, A is a radical of the formula ##STR2## and B is an alkylene or alkenylene group or a direct bond, or if n is zero, A is a compound of the formula ##STR3## Fibre- and surface-level dyeings, in particular in light to medium color shades are obtained by the dyeing process according to the invention. The dyeing aid according to this invention can be used to substitute formaldehyde containing wool dyeing aids.

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