Product Details
PU Hardener

PU Hardener (Similar to RN)

Item no.: TPUA-ACFN

  • Key features:
    - Similar to RN
    - NCO: 5.8 ± 0.2% by weight
    - Non-yellowing
    - Enhance the bonding strength of adhesive
    - Increase the heat resistance of adhesive
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Product Introduction

After the addition of PU hardener 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 PU hardener TPUA-ACFN (NON YELLOWISH) is designed as curing agent for adhesive based on hydroxyl polyurethane, natural and synthetic rubber; owing to PU hardener TPUA-ACFN (NON YELLOWISH) features good hot-resistance, it is particularly suitable for light-color polyurethane adhesive system. Because the solvent is ethyl acetate, PU hardener TPUA-ACFN (NON YELLOWISH) can be used in those countries where the use of methylene chloride is restricted.
Typical Properties
Chemical composition Solution of approx. 27%
Polyisocyanate in 73% ethyl acetate
Intrinsic color Almost colorless to light-color clear liquid
NCO content, % by weight 5.8±0.2
Solubility Soluble in various esters, ketones and aromatic solvents
Storage stability Reacts 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.
Taiwan PU Corporation is a professional PU hardener manufacturer, PU hardener producer. We supply high quality PU hardener products, have an experienced technical team and offer the best price to PU hardener.

PU hardener is called PU hardener for glue, PU hardener for adhesive, PU hardener for shoe adhesive, PU hardener for shoe glue. If PU hardener is needed, please contact us.

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