Title (en)

ONE-PHASE PROCESS FOR PRODUCING PRINTS USING REACTIVE DYES BESIDES AZOIC DEVELOPING DYES ON ALKALI-PRE-IMPREGNATED TEXTILES

Publication

EP 0372536 A3 19911127 (DE)

Application

EP 89122518 A 19891206

Priority

DE 3841482 A 19881209

Abstract (en)

[origin: EP0372536A2] In the conventional diazotization of fast colour bases or fast colour salts with subsequent neutralization of the acid present using Na acetate, reactive dyes can only be fixed incompletely in the print alongside diazo compounds of this type on alkali-preimpregnated goods in a one-phase process, since the acid vapours escaping in the steam partially neutralize the alkali. For this reason, it was necessary to use the two-phase procedure under these circumstances. These disadvantages can be overcome according to the invention if amines intended for dye coupling are diazotized with non-steam- volatile acids, and the pH adjustment (neutralization) is effected using salts of medium-strength, non-steam-volatile acids. Reactive dyes can then be printed onto alkali-preimpregnated goods in one phase alongside diazonium compounds and fixed without losses in the steam.

IPC 1-7

D06P 5/00; D06P 3/68; D06P 3/66

IPC 8 full level

D06P 3/66 (2006.01); D06P 3/68 (2006.01); D06P 5/00 (2006.01)

CPC (source: EP)

D06P 3/66 (2013.01); D06P 3/68 (2013.01); D06P 5/001 (2013.01)

Citation (search report)

• [Y] FR 2110457 A1 19720602 - HOECHST AG
• [YD] DE 2850901 A1 19800612 - HOECHST AG
• [AD] FR 2202189 A1 19740503 - HOECHST AG [DE]
• [AD] FR 2288183 A1 19760514 - HOECHST AG [DE]
• [A] FR 2265903 A1 19751024 - CIBA GEIGY AG [CH]

Designated contracting state (EPC)

BE CH DE FR GB IT LI NL

DOCDB simple family (publication)

EP 0372536 A2 19900613; EP 0372536 A3 19911127; EP 0372536 B1 19930609; DE 3841482 A1 19900613; DE 58904632 D1 19930715; JP H02191781 A 19900727; OA 09105 A 19911031

DOCDB simple family (application)

EP 89122518 A 19891206; DE 3841482 A 19881209; DE 58904632 T 19891206; JP 31790089 A 19891208; OA 59695 A 19891208