精鼎化學股份有限公司

Products for improving the washing fastness of disperse dyestuffs affected by thermomigration

 

 

Composition

Appearance

Ionicity

pH value

Density

Solubility

Storage

 

 

Compatibility

 

polysiloxane emulsion

milky white emulsion

nonionic

appr. 3.2

appr. 1

soluable in cold water

under adequate storage conditions stable for 9 months. During storage traces of hydrogene could occur, the packing has therefore a safety valve.

product is compatible with most products used in finishing. However trial should be taken before using.

 

Application

 

During the thermic treatment of the PES fibre dyed with disperse dyes, thermomigration occurs at temperatures over 120℃. Depending on the type of dyestuff used, the thermomigration can be stronger or weaker. The  thermomigration, however influence fastness, especially the washing fastness,negatively. This problem could occur at the finishing of PES and its blends fabrics. The use of Goodfix TH with Catalyst TC in the finishing could improve the washing fastness of most disperse dyes, especilly AZO types.                                                

 

Use

 

The usage concentration could very between:

         4 - 8 g/l  Goodfix  TH

         2 - 4 g/l  Catalyst  TC

Examples for resipes:

 

1. Resin finishing of PES/cellulosic fabrics:

          60 g/l  reactive resin

          20 g/l  Goodsoft  ASR

          10 g/l  Catalyst for resin

           6 g/l  Goodfix  TH

           3 g/l  Catalyst  TC

padding, drying at 120℃, heat seting at 150℃for 2 - 3 min.

 

2. Finishing of 100％ PES fabrics:

         6 - 8 g/l  Goodfix  TH

         3 - 4 g/l  Catalyst  TC

            x g/l  softener and other additives

padding, finishing at 150 - 180℃ for 2 min to 30 sec.

 

3. Finishing of PES/cotton knited fabrics:

         6 - 8 g/l  Goodfix  TH

         3 - 4 g/l  Catalyst  TC

            x g/l  softener and other additives

padding. finishing at 150℃ for 2 - 3 min.

 

4. For amending the washing fastness:

  If the washing fastness is bad because of thermomigration, it can be improved without water cleaning by padding:

         6 - 8 g/l  Goodfix  TH

         3 - 4 g/l  Catalyst  TC

Drying at 120℃ to 3 min.

 

At the a.m. figures of finishing conditions, it has to be taken into consideration that the increasing treatment temperatures the tendency of the dyestuffs for thermomigration is also increased, so that the washing fastness received is increasingly difficult to control.