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Ark® 1256 is a Rapid Epoxy Curing Agent suitable for coatings, adhesives, sealants and constructions.

Functions: Curing Agent

End Uses: Solventless & High Solids Coating

Compatible Polymers & Resins: Epoxies (EP)

Features: Alkali Resistance, Easy Handling, Excellent Adhesion, Fast Cure, Improved Flexibility, Improved Hardness, Solvent Resistance

    Knowde Enhanced TDS

    Identification & Functionality

    CASE Ingredients Functions
    Technologies

    Features & Benefits

    Features

    Cured with bisphenol-A or bisphenol-F or phenol novolac based epoxy resins. Ark 1256 is most suitable as curing agent for

    • Fast curing with short pot life
    • Combined with the advantages of high hardness, good adhesion and moderate flexibility
    • Cured product is resistance to solvents, dilute inorganic acids and alkalies
    • Its 100% solids contents makes it safer and convenient to handle

    Applications & Uses

    Compatible Polymers & Resins
    Applications

    Suitable for formulating rapid curing epoxy putty, coatings, adhesives, sealants and constructions.

    Recommended Mixing Ratios
    Epoxy resin ( EEW = 190 ) such as Epon 828 or GY 250 100 parts by weight
    Hardener Ark 1256 80 - 90 parts by weight
    Gel Time, at 25°C , min., 20 gm 5 - 7 parts by weight

     

    Properties

    Physical Form
    Appearance
    Clear, Light Colour Liquid
    Typical Properties
    ValueUnitsTest Method / Conditions
    Active Hydrogen Equivalent Wt.(AHEW)150g/eq-
    Amine Value340 – 370mgKOH/gm-
    Colormax. 5Gardner
    Density (at 25°C)1.0 - 1.05g/cm3-
    Viscosity (at 25°C)20000 – 35000cP-
    Pot Life (at 25ºC)3 - 5minutes

    Storage & Handling

    Shelf Life
    Minimum One year
    Storage and Stability

    Hardener Ark 1256 should be stored in a cool dry place at 2 – 40 °C in the sealed container to achieve shelf life of minimum one year.Product can react with moisture and carbon dioxide in the air. Avoid exposure to direct sunlight

    Handling Precautions
    • May be harmful if ingested or absorbed through the skin and can cause sensitization.
    • Will cause severe irritation in contact with eyes and skin.
    • Adequate ventillation is essential.
    • Containers should be tightly closed when not in use or during transportation.
    • Do not inhale mist or vapors.
    • It is recommended to use gloves, safety glasses and protective clothing for safe handling.