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DURAPASS 715

Product description

  •  Durapass 715 is formulated as a NO-Rinse
    passivation for aluminum coil coat industry to provide
    superior adhesion and a good corrosion resistance.
  •  Durapass 715 produces thin uniform transparent
    chromium free coating at low concentration and
    temperature on coil coating lines.

Application

  • Durapass.715 is specially formulated liquid product for aluminum coils in coil coating lines.

Features

  •  Durapass 716 is formulated as a NO-Rinse
    passivation for steel coil coat industry to provide
    superior adhesion and a good corrosion resistance.

  • Durapass 716 produces uniform transparent
    chromium free coating at low concentration and
    temperature on coil coating lines.

Physical & Chemical Properties

Appearance                Clear colorless liquid
PH (Direct)at 25 oC            2.3 ± 0.2
Density at 25 oC               1.0 ±0.05 g/cm3
Total Acid Point (Direct)             19.4 ± 0.3
Free Acid Point (Direct)                5.4 ± 0.3

Equipments

Main tank can be fabricated from hard PVC or
stainless steel or fluoride resistant plastic. All other
equipments in contact be of stainless steel 316,PU

Analysis “Total Acid Point, TAP”

  •  Take 10 ml of solution.
  •  Add 50 ml of distilled water
  •  Add 5 to 6 drops of phenolphthalein indicator.
  •  Titrate it against 0.1.N sodium hydroxide solution.
  •  End point from colorless to pink.
     
  • Sodium hydroxide consumed will give total acid
    point.

Process Sequences

  •  Cleaning, Degreasing.
  •  Rinse with water
  •  Rinse with D.I water
  •  Passivation using Durapass 715.
  •  Drying

Operating Parameters

Durapass 715 is ready use product, No need to prepare
dosage with water.

Initial preparation

  •  Durapass.715 is used as it is without further
    Dilution fresh continuously, No need for chemical
    replenishment.

  •  Maintain total acid point minimum 18, below which the
    recycle should be discarding and new fresh material
    should be used.

Precautions

  • D.I water should be used to prepare the bath with max conductivity 30 μS

Storage Information

  • Storage & Handling
    Keep container tightly closed. Keep container in a cool,
    well-ventilated area. Do not expose to direct sun. Stable
    nonflammable product. Avoid store near alkaline, reducing
    materials. Store in temperature not above 40oC.
    Shelf Life
    one year from date of production if stored in normal
    condition
    Packaging Type
    HDPE containers , outer sealed with ventilated cap
    Standard Packing
    Durapass 716 is available in 25kg can ,200 kg plastic drum
    and 1000 kg IBC.
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