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Nová metoda barvení s oxidovatelnými mořidlovými barvivy azolového typu

Authors: Hrdina Radim | Burgert Ladislav | Luňák Stanislav | Luštinec Daniel | Kuthan Petr | Sobeslav Jiří

Year: 2004

Type of publication: patent

Publisher name: Český patentový úřad

Place: Praha

Page from-to: nestránkováno

Titles:

Language	Name	Abstract	Keywords
cze	Nová metoda barvení s oxidovatelnými mořidlovými barvivy azolového typu	Nová metoda barvení s oxidovatelnými mořidlovými barvivy azolového typu	barvení,oxidovatelná mořidlová barviva,barviva azolového typu
eng	Novel method of dyeing with oxidizable mordant dyes of azole type	In the present invention, there is disclosed a novel method of dyeing animal substrates, particularly wool, is characterized in that for dyeing an animal fiber, there is used an oxidizable mordant dye of azole type, for subsequent oxidn. hydrogen peroxide is used instead of currently used chromate (salt Cre6+) wherein subsequent complexing (afterchrome) is then carried out by water sol. compds. of trivalent chromium, preferably CFi3. This method results in coloring of wool of the same quality as that of chromate treatment. Both, the manufacturer of the dyed goods and the user will not be exposed to compds. of hexavalent chromium and owing to the fact that hydrogen oxide is a weaker oxidant if compared with chromate; a minor damage of fiber (change in mech. properties) is encountered in comparison with traditional chromate treatment. Enhancement of chromate treatment results in redn. of chrome consumption with pos. impact to redn. of excessive chrome affect to environment.	Dyeing;oxidizable mordant dyes;azole dyes