EP 0200131 B1 19920520 - PROCESS FOR THE EVEN DYEING OF CELLULOSIC FIBRES WITH REACTIVE DYES
Title (en)
PROCESS FOR THE EVEN DYEING OF CELLULOSIC FIBRES WITH REACTIVE DYES
Publication
Application
Priority
DE 3515407 A 19850429
Abstract (en)
[origin: EP0200131A2] In a known isothermal dyeing process, the alkali required for fixing the dye is added linearly or progressively to the neutral dyebath under program control. In this process, the amount of alkali added per unit time is initially small and increases progressively in accordance with a preprogrammed profile. This involves passing through a certain (uncontrollable) initial phase until fixation of the dye starts on the cellulose. Subsequently, the rate of fixation attains a maximum and then gradually ceases, to arrive at the final state of the dyeing. To shorten the initial phase (delay time) of dye fixation and in order to slow down the rate of fixation during the steepest part of the curve, it has been found to be advantageous to add the alkali according to a parabolic program.
IPC 1-7
IPC 8 full level
D06P 1/00 (2006.01); D06P 3/66 (2006.01); D06P 3/82 (2006.01); D06P 3/86 (2006.01)
CPC (source: EP US)
D06P 1/0004 (2013.01 - EP US); D06P 3/66 (2013.01 - EP US); Y10S 8/918 (2013.01 - US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI SE
DOCDB simple family (publication)
EP 0200131 A2 19861105; EP 0200131 A3 19890104; EP 0200131 B1 19920520; AT E76453 T1 19920615; DE 3515407 A1 19861030; DE 3685365 D1 19920625; JP S61252379 A 19861110; US 5167668 A 19921201
DOCDB simple family (application)
EP 86105469 A 19860421; AT 86105469 T 19860421; DE 3515407 A 19850429; DE 3685365 T 19860421; JP 9706286 A 19860428; US 61794490 A 19901126