improves the water , perspiration and wet ironing fastness considerably and to
a certain degree also the wash fastness ( altertreatment is recommended at 30°
C and the addition of salt )of direct dyeings on natural and regenerated
cellulosic fibres. With reactive dyestuffs it prevents poor wet fastness caused
by dyestuff hydrolysate.
It is very well suitable for the improvement of the wet
fastness properties of dyed and printed WO and silk fibres .
When dyeing with aftercoppering dyestuffs, an aftertreatment with Fixingagent DR
can be Carried out with copper sulphate and acetic acid in the same bath
Entirely compatible with non ionic and cationic products .
with anionic products precipitations will ocuar .
The possibility that Fixingagent DR influences the shade
and the light fastness has to be taken Into account .
The handle is in no way hardended by an aftertreatment with Fixingagent DR .
In order to
obtain an optimal improvement of fastness the thoroughly rinsed resp. soaped
dyeings and printings should be after treated as follows :
Dyeing of CO
with direct dyestuffs
1 2 % for light to medium shades
2 4 % for
medium to dark shades
with reactive dyestuffs
2 % for light to medium shades
3 % for medium to dark shades
should be carried out at 20 40°
C for 20 30 minutes . in case
the treatment is carried out at 40°
C ( for a significant improvement of the wash fastness up to 50 °C
) ti is advisable to add 5 g/l
calc .in order to
avoid bleeding . in this case a
short cold afterrinsing is also necessary .
Dyeing of WO and silk :
1 2 % ( 2 4 %)for light to medium shades ( for superwash WO )
2 4 % (4 - 6
%)for medium to dark shaees ( for superwash WO )
The tretment should be carrid out at 20 30°
C for 10 minutes , then heat up to 40 50°
C within 20 Minutes , allow for approx. 5 minutes of delling
time , drain and rinse cold shortly .
Padding method :
For dyeing CO, WO and silk ( dry in wet )
Depending on depth of shade
50 g/l fixingagent DR
The treatment should be effected at 20 40 °
C . If higher concentrations and padding temperatures are applied , brielly
rinse cold .
Fixingagent DR can also be used as
additive to sizes and finishing agents for improving the wet fastness of direct
dyestuffs and for preventing bleeding of dyeings .
The compatibility of the finishing agents and auxiliaries with C( fixingagent DR
should , however , be checked by preliminary trails .
Ususl concentrations to be used in this case are 10 20 g/l , depending on
depth of shade .
Stripping of faulty dyeings:
Should dyeings have to be redyed , levelled out or stripped ,at first a
treatment for the removal of fixingagent DR is necessary .
This treatment is carried out either with
3 4 g/l soda ash
at 70 80°
C for 30
5 ml/l hydrochloric salt
and 0.5 1 g/l ATEBIN THL
at 40 60°
C for 30 minutes .
finally , a thorough rinsing is carried out .
Notes for stripping:
For CO fibres both stripping methods are possible
For WO fibres only the methed with hydrochloric acid is possible for reasons of
protecting the fibre. In addition to this , only the minimum treatment
temperature , i.e . 40°
C , should be chosen.
For silk fibres the method with soda ash should be preferred for reasons of
protecting the fibre.
find all the additional information on product properties pertaining to
environmental protection as well as working safety on our separate standard
safety data sheet.
These data are derived from practical
experience and can - due to different plant conditions - only serve as
recommendations without any liability. Any exciting Industrial patent rights
have to respected.