Hardener for Solvent Based PU Adhesive

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    • Style:Powder

    Key Features

    + Hardener Additive for PU Adhesives

    + Hardener for Solvent Based PU Adhesive

    + Hardener for Shoe Adhesive

    + Shoe Adhesive Hardener

    + Hardener for water based PU Adhesive

    + Hardener for Solvent Based PU Adhesive


    Hardener (Non Yellowish) (Similar to RN)/ TPUA-ACFN



    • Similar to RN
    • NCO: 4.8 ± 0.2% by weight
    • Appearance: colorless to light color clear liquid
    • Non-yellowing
    • Enhance the bonding strength of adhesive
    • Increase the heat resistance of adhesive


    After the addition of TPUA-ACFN (NON YELLOWISH), the ready-to-use double-component adhesive should be applied within a period (pot life) which is determined not only 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, it may become increasingly difficult to apply and its viscosity increases rapidly until irreversible gelling ultimately occurs.
    The almost colorless TPUA-ACFN (NON YELLOWISH) is designed as curing agent for adhesive based on hydroxyl polyurethane, natural and synthetic rubber; owing to TPUA-ACFN (NON YELLOWISH) features good hot-resistance, it is particularly suitable for light-color polyurethane adhesive system. Because the solvent is ethyl acetate, TPUA-ACFN (NON YELLOWISH) can be used in those countries where the use of methylene chloride is restricted.
    Typical Properties
    Chemical compositionSolution of approx. 27%
    Polyisocyanate in 73% ethyl acetate
    Intrinsic colorAlmost colorless to light-color clear liquid
    NCO content, % by weight4.8±0.2
    SolubilitySoluble in various esters, ketones and aromatic solvents
    Storage stabilityReacts readily with moisture; for the best performance it should be kept dry and stored at temperatures between (5℃~32℃)
    The film of adhesive and coating film mixed by TPUA-ACFN (NON YELLOWISH) is difficult to become yellow after exposure to UV light and heat. So TPUA-ACFN (NON YELLOWISH) shows good bonding strength in PVC with much plasticizer, SBR with plenty of oil, coating leather, silk and so on.
    Suggested Additions
    For curing adhesive of 100 parts by weight (p.b.w) based on:
    Graft - Chloroprene rubber (Rubber content approx. 16%)3-5 p.b.w. TPUA-ACFN (NON YELLOWISH)
    Chloroprene rubber (Rubber content approx. 20%)5-7 p.b.w. TPUA-ACFN (NON YELLOWISH)
    Hydroxyl polyurethane (Rubber content approx. 15%)3-5 p.b.w. TPUA-ACFN (NON YELLOWISH)

    A. each 0.8kg in a standard aluminum bottle
    each 20 bottles in a standard carton
    B. each 180kg in an iron drum
    Notice: These values are based on the test of our present laboratory test specimens.

    ****We cordially invite you to access our following website to know more about our
             hardener  - 

    https://www.taiwanpu.com/productInfo/Hardener Additive/Hardener (Similar to RC) TPUA-C43F


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