AVCO-L DR

COMPLEXING / DISPERSING AGENT FOR DYEING AND PREPARATION
AVCOL DR is a complexing agent, which combines protective colloid properties together with dispersing and complexing properties. AVCOL DR is used as a versatile additive in textile procedures such as preparation, dyeing and soaping-off. AVCOL DR is used for treatment of cotton, and cotton blends with synthetic fibres.

SPECIFICATION:

Appearance Clear,viscous, slightly yellowish liquid.
Chemical nature Blend of polymers in aqueous solution.
Compatibility
  1. Good in pH range of 4 – 13.
  2. Good with nonionic and anionic products.
Density (gr/cc) App. 1.15.
Ionicity Anionic.
pH 7 ± 1
Solubility Soluble in water at any ratio.
Storage Good for at least 12 months.

PROPERTIES & USES:

  1. AVCOL DR is an excellent dispersing agent, that operates as a crystal distorter
    and
    threshold inhibitor, which prevents water hardness from precipitation onto
    textile
    fibres and machine walls.
  2. AVCOL DR is an efficient protective colloid, which prevents re-deposition of
    impurities onto textile fibers.
  3. AVCOL DR loosens from the fibers and disperses in water phase metal salts, and
    other
    precipitated materials found on fibres structure.
  4. AVCOL DR does not sequester metals which are included in dyestuff molecules such
    as
    copper in phthalocyanine derivatives.
  5. AVCOL DR is stable at a wide pH range of 4 – 13.
  6. AVCOL DR disperses and sequesters water hardness and heavy metal ions
    contaminating
    raw fibers, salts and other chemicals used in preparation,and dyeing procedures.

APPLICATION:

  • AVCOL DR should be added to the treatment bath before other additives or dyestuffs.
  • AVCOL DR can be metered to continuous ranges as is or pre-diluted at any ratio.
GUIDING RECIPES:
  1. PREPARATION PROCEDURES:

    • AVCOL DR is very beneficial in scouring bath after de-sizing treatment. Removal of sizes from fabrics is much better and fabric absorbency is improved.
      Use 1-3 gr/l.
    • In pre-washing processes before bleaching or dyeing, addition of AVCOL DR improves very much dirt removal and prevents re-deposition.
      Use 1-3 gr/l.
  2. DYEING PROCEDURES
    In reactive dyeing bath apply 1-2 gr/l of AVCOL DR. Add the product before
    adding all other alkalis, salts and dyes to the dyeing bath.
  3. SOAPING OFF PROCEDURES
    • AVCOL DR is a non surface active washing preparation, that is used for after washing of reactives. The product is non foaming and there is no need of
      anti-foams.
      Use 1-3 gr/l.
    • AVCOL DR is used also as a washing-off agent for cotton fabrics printed with reactive dyestuffs.
      Use 1-3 gr/l.