AVCO-TRYL PN

COMPLEXING AGENT FOR PRETREATMENT PROCESSES
AVCOTRYL PN is a sequestering agent, with an outstanding complexing capacity used for pretreatment of natural fibres and blends with synthetics.
AVCOTRYL PN is based on a unique combination of phosphonates with protective colloid properties, which can prevent precipitation of Calcium, Magnesium and Heavy metal salts on textile fibres and on machines parts.
AVCOTRYL PN prevents redeposition of soil onto textile fibres during preparation and bleaching processes.SPECIFICATION:

Appearance Yellow brownish, clear liquid
Chemical nature Blend of phosphonates in aqueous solution.
Compatibility Resistant to strong alkalis, acids, silicates, oxidizing-agent and reducing agent normally encountered in pretreatment procedures. Is not compatible with hypochlorite and cationic products.
Density (g/cc) App. 1.25
Ionicity Anionic
pH (1% sol.) 6 – 8
Solubility Miscible with water at any ratio
Storage Stable for at least 12 months.

PROPERTIES & USES:

  1. High binding capacity towards alkaline earth and heavy metal ions an a wide pH
    range (3-13).
  2. AVCOTRYL PN increases efficiency of detergents used in the pretreatment
    procedure, and improves primary detergency by synergistic action.
  3. Excellent de-crystallizing properties towards precipitated Calcium, Magnesium and
    Heavy metals salts (threshold effect).
  4. Stable to all chemicals used in cotton and cotton blend pretreatment, such as
    strong alkalies, persulphates, hydrogen-peroxide etc.
  5. Very useful complexing for agents textile pretreatment processes such as
    desizing, alkaline boiling off, peroxide bleaching and washing processes.
  6. High complexing capacity towards iron ions in peroxide bleaching bath, to avoid
    pin-holes and rust stains.
  7. Non-foaming at all.
  8. Liquid product-which can be metered by all types of automatic dosing machines.

APPLICATION:

AVCOTRYL PN is a mobile liquid, and can be metered directly to the treatment liquor without prediluting. The application quantities are the following:
  1. Long liquor bleaching process with H2O2 – use 0.25 – 1.0 g/l
  2. Alkaline boiling off in long liquor ratio machines – use 0.25 – 1.0 g/l
  3. Cold pad batch bleaching with H2O2 – use 1.0 – 3.0g/l
  4. Hot continuous bleaching with H2O2 – use 1.0 – 3.0 g/l
  5. Alkaline boiling off continuously – use 1.0 – 3.0 g/l
  6. Enzymatic desizing – use 1.0 – 3.0g/l