AVCO-FIX ECO

FORMALDEHYDE FREE FIXING AGENT FOR DIRECT AND REACTIVE DYESTUFFS
AVCOFIX ECO is a fixing agent with fibre affinity, used to improve the washing and contact fastness of dyeings and prints with reactive and direct dyestuffs on cellulosic fibres.

SPECIFICATION:

Appearance Polyammonium compound.
Solubility Miscible with water
Compatibility Is not compatible with anionic products.
Ionicity Cationic
pH (10% sol.) 5 – 6
Chemical composition Slightly yellowish clear liquid
Density (at 20°C) 1.2 g/cc
Stability to: Acids, Alkaliks & water hardness Stable
Stability to frost Sensitive to frost. Do not store above 40°C Shelf life is at least 12 months.

PROPERTIES & USES:

  1. AVCOFIX ECO improves the washing fastness at 40°c and at 60°c for direct and
    reactive dyeing.
  2. AVCOFIX ECO improves the contact fastness to water and to perspiration.
  3. Only slight influence on the shade and light fastness.
  4. No influence on the fabric handle and on sewability performance.
  5. No fishy odours.
  6. No influence on the hydrophility of the treated fabrics.
  7. Formaldehyde free fixing agent.
  8. Suitable for all kinds of cellulosictextiles such as yarns, fabrics and garments.

APPLICATION:

  1. EXHAUST PROCESS
    AVCOFIX ECO can be applied in the exhaust process. The dyed fabric should be well rinsed before the after-treatment with this product, to avoid precipitations with residues of anionic wetting agents and dyeing auxiliaries.
    After the treatment with AVCOFIX ECO any excess of the product on the textiles should be removed by a cold rinsing bath, if possible. This will have a favorable effect on the light and wet fading fastness and possibly prevent shade changes in the case of metal-containing reactive dyes.
    The pH of the after-treatment bath should be between 5-7, and the after-treatment temperature should be to 20 – 40°C. Treat for 20-30 minutes.
    Dosage recommendation: 1-3% AVCOFIX ECO used on the textile weight.

  2. PADDING PROCESS
    The material which was dyed, soaped and dried is padded with 10-30 gr/l AVCOFIX ECO followed by drying. In wet on wet padding processes increase concentration according to pick up.

  3. STRIPPING
    To correct faulty dyeings, AVCOFIX ECO must be removed from goods before redyeing.
    Use the following stripping bath:
    AVCO DISPERSANT NS -3-5 g/l
    Acetic-acid (60%) -1-2 g/l
    Adjust to pH 4-4.5.
    Treat at 95-98°c for 20-30 minutes, drop bath and rinse thoroughly warm and cold water.