EP 0769083 A1 19970423 - METHOD OF PRODUCING COLOURED NATURAL OR SYNTHETIC SUBSTRATES
Title (en)
METHOD OF PRODUCING COLOURED NATURAL OR SYNTHETIC SUBSTRATES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON FARBIGEN NATIVEN ODER SYNTHETISCHEN SUBSTRATEN
Title (fr)
PROCEDE DE FABRICATION DE SUBSTRATS NATURELS OU SYNTHETIQUES COLORES
Publication
Application
Priority
- DE 4423444 A 19940705
- EP 9502432 W 19950622
Abstract (en)
[origin: DE4423444A1] The invention concerns an improved method of producing coloured natural or synthetic substrates by means of the following steps: (a) the substrate is contacted with a reactive coupling compound, (b) the coupling compound is fixed on the substrate by the formation of a chemical bond, (c) unfixed and hydrolysed coupling compound is removed, (d) the fixed coupling compound is reacted with a diazonium salt suitable for azo-dye formation, (e) excess diazonium compound is removed.
IPC 1-7
IPC 8 full level
CPC (source: EP)
D06P 1/125 (2013.01); D06P 3/685 (2013.01)
Citation (search report)
See references of WO 9601338A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IE IT LI NL PT SE
DOCDB simple family (publication)
DE 4423444 A1 19960111; AU 2923695 A 19960125; EP 0769083 A1 19970423; FI 970045 A0 19970103; FI 970045 A 19970103; WO 9601338 A1 19960118
DOCDB simple family (application)
DE 4423444 A 19940705; AU 2923695 A 19950622; EP 9502432 W 19950622; EP 95924910 A 19950622; FI 970045 A 19970103