AVCO-PRINT ESO

SODIUM ALGINATE THICKENER
AVCOPRINT ESO is an high viscosity, easy soluble alginate based thickener, used for printing of reactive dyestuffs on cellulose, rayon and wool fabrics. The thickener has fast swelling properties.

SPECIFICATION:

Appearance Grained, light beige powder.
Chemical nature Highly purified sodium alginate.
Compatibility
  1. Can be used together with all chemicals and dyestuffs encountered in reactive printing.
  2. Is not compatible with multi-velent metal ions, and strong acids and alkalis.
Ionicity Anionic
pH (1% sol.) 7.5 ± 1
Storage Stable for at least 12 months if stored in cool and dry place, in closed packages.

PROPERTIES & USES:

  1. Produces viscous, long flow printing pastes with low shear sensitivity, and low
    sensitivity to electrolytes used in reactive printing.
  2. Preparation of stock thickening does not require long swelling time. High speed
    mixing for 20-40 minutes is enough.
  3. Produces brilliant prints with sharp definition and high color yield.
  4. Very easily removable from printed fabric in a normal washing-off process.
  5. Suitable for printing reactives on cotton, rayon and wool fabrics and for
    printing disperse dyes.
  6. Can be used for all-aqueous and semi-emulsion printing pastes.
  7. Suitable for dry curing at elevated temperatures (150-160°C). The ease of removal of AVCOPRINT ESO is not affected

APPLICATION:

  1. Preparation of stock paste:
    Water 945
    AVCO-POLYQUEST KAL 5
    AVCOPRINT ESO 50
    1000
    Add AVCO-POLYQUEST KAL to the water. Start high-speed mixing and sprinkle in AVCOPRINT ESO .Mix for 10-20 minutes, and continue with slow agitation for another 10 minutes (swelling time). Change back to high-speed mixing for another 10 minutes until paste is homogeneous. It is possible to add the thickener with high-speed mixing, the pre-mix is stored over night for swelling and remixed again for final dissolving with an high speed mixer.
  2. Preparation of semi-emulsion stock paste:
    Water adjust to 1000
    AVCO-POLYQUEST KAL 1 – 2
    AVCOPRINT ESO (5%) 500 -200
    AVCOPAL REP 5 – 15
    White spirit 150 -400
    1000
    Prepare aqueous thickening of AVCOPRINT ESO as in (1).
    Add AVCOPAL REP.
    The final step is adding white-spirit in small portions during high-speed mixing.
  3. Preparation of printing paste:
    To the stock paste add all ingredients and dyestuffs as recommended by the dyestuff manufacturer. Following is an example of printing paste suitable for printing “MCT” and “VS” dyestuffs.
    Stock paste X
    Water Y
    AVCOSON LL 15 – 30
    Urea 100 – 200
    Sodium-bicarbonate25

    1000

    Mix with an high-speed mixer until paste is homogeneous.
  4. To the printing paste add the desired amount of dyestuff and mix well until fully dissolved.Printing paste can be stored for long storage times (2-4 weeks) if a suitable preserving agent is added (2-4 g/kg AVCOGARD PR), and depends on type of dyestuffs used.