Hardener for Shoe Adhesive

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    • Style:Luquid
    • NCO content, % by weight :6.0±0.2
    • Solubility : Soluble in various esters, ketones and aromatic solvents
    • Chemical composition:Approx. 26% aromatic polyisocyanate in 74% ethyl acetate
    • Intrinsic color:Almost colorless liquid
    • Storage stability:Reacts readily with moisture; for the best performance it should be kept dry and stored at temperatures betweens 5℃ and 32℃

    Key Features

    +Hardener for Solvent Based PU Adhesive

    +Hardener for Shoe Adhesive

    +Hardener Additive for PU Adhesives (Non Yellowing)

    +Hardener for Shoe Adhesive

    +Shoe Adhesive Hardener

    +Hardener for water based PU Adhesive



    • Similar to RC
    • NCO: 6.0 ± 0.2% by weight
    • Appearance: almost colorless liquid
    • Better heat resistance
    • Enhance the bonding strength of adhesive
    • Increase the heat resistance of adhesive



    After the addition of TPUA-AC528, the ready-to-use double-component adhesive should be applied within a period (pot life) which is determined not only by its content of rubber, but also by the other ingredients of the formulation (e.g. resins, antioxidants, solvents, etc.) If the adhesive is not used within this period of time, it may become increasingly difficult to apply and its viscosity increases rapidly until irreversible gelling ultimately occurs.



    The almost colorless TPUA-AC528 is designed as curing agent for adhesive based on hydroxyl polyurethane, natural and synthetic rubber; owing to TPUA-AC528 has the feature of good photo-resistance, it is particularly suitable for light-color polyurethane, adhesive system. Because the solvent is ethyl acetate , TPUA-AC528 can be used in those countries where the use of methylene chlorides is restricted.


    Typical Properties

    Chemical composition

    Approx.25% aromatic polyisocyanate in 75% ethyl acetate.

    Intrinsic color

    Almost colorless liquid

    NCO content, %by weight



    Soluble in various esters, ketones and aromatic solvents

    Storage stability

    Reacts readily with moisture; for best performance it should be kept dry and stored at temperatures betweens 5oC and 32oC



    Compatibility With Solvents

    TPUA-AC528 can be diluted with anhydrous and alcohol-free ethyl acetate, dichloropropane, trichloroethylene, acetone, methyl ethyl ketone, toluene, and other similar solvents. The addition of relatively by using lager proportions of the solvents mentioned above.


    Suggested Additions 

    For Curing adhesive of 100 parts by weight (p.b.w) based on:


    Graft - Choloroprene rubber
    (Rubber content approx. 16%)

    3-5 p.b.w. TPUA-AC528

    Choloroprene rubber
    (Rubber content approx. 20%)

    5-7 p.b.w. TPUA-AC528

    Hydroxyl polyurethane
    (Rubber content approx. 15%)

    3-5 p.b.w. TPUA-AC528




    A. each 0.8kg in a standard aluminum bottle
    B. each 20 bottles in a standard carton
    C. each 200kg in an iron drum


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    Payment Details

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