IRAN DANTEX CHEMICALS
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FIXING AGENT DR

 

Fields of application : Cationic aftertreating agent for improving wet fastness properties of substantive and reactive dyes and prints on cellulosic fibres as well as of dyed and printed WO and silk fibres 
Composition : Nitrogen – containing polycondensate
Appearance : Colourless, clear liquid 
Ionic state : Cationic 
PH –value (10% solution ) : Approx. 4
Density (20° C) : Approx.1.1 g/cm3 
Viscosity ( 20 °C) : Approx. 10 mPa.s
Solubility : in cold water
Stabilities : Stable to acids, alkalis and electrolyies in usual concentrations as well as to hard water .In aftertreating baths it can be used together with copper sulphate 
Storage stability : Approx. 12 months after delivery , if stored in the original unopened drums under the stated conditions  
Storage conditions : Recommended storage temperature :+3° C to + 35° C   
Packing : Drum , container 
:

Properties :

Fixingagent DR 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 .

Application :

In order to obtain an optimal improvement of fastness the thoroughly rinsed resp. soaped dyeings and printings should be after treated as follows :

Exhaust mothod :

Dyeing of CO

-         with direct dyestuffs

                                   1 – 2 % for light to medium shades

                                   2 – 4 %  for medium to dark shades

-         with reactive dyestuffs

-                                1 – 2 % for light to medium shades

-                                2 – 3 % for medium to dark shades

 

The treatment 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  Na2SO4   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
                          10- 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  minutes
or with
                    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.

 

Please 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.