Highly reactive tin-free catalyst for one- and two-component polyurethane coatings

  • Physical Characteristics

    Metal contentBi: 23 – 25 % ISO 4619
    Non-volatile contentN/A
    ViscosityN/A
    Specific gravityN/A
    Density1.20 – 1.26 g/cm³ DIN 51757 (20 °C)

  • Features

    • Ecologically safe replacement for other polyurethane catalysts, especially for tertiary amines and DBTL
    • Accelerates the chemical reaction between the alcohol and isocyanate component of polyurethane coating systems, thus allowing optimum steering of the drying properties
    • Ensures fast blocking stability
    • Improves solvent resistance
    • Higher film hardness
    • Earlier sanding of the coating

  • Applications

    • Solvent-based one- and two-component polyurethane coatings
      • Automotive Refinish
      • General Industrial
      • Coil

  • Dosage

    Our experience has shown the recommended addition rate of Borchi® Kat 24 to be between 0.01 and 0.03 % product, calculated on total solid binder. The exact amount depends on the used binder and should be determined by means of preliminary trials. Borchi® Kat 24 can be added either in the supply form or diluted in any suitable solvent (e.g. butyl acetate) to the polyol component of the coating system. Borchi® Kat 24 should not be diluted below 10 % of the supply form, since those solutions are only stable for a limited period of time.

  • Storage

    Protect from the effects of weathering and store at temperatures below 50 °C. Once opened, containers should be resealed immediately after each removal of the product.

  • Safety

    Please refer to our safety data sheet for information relating to product safety.

Registration :
  • Europe : EINECS, EU - REACH (Registered)
  • Switzerland : EINECS
  • USA : TSCA
  • Canada : DSL
  • Australia : AICS
  • New Zealand : NZIoC
  • China : IECSC
  • Japan : ENCS
  • Korea : ECL
  • Taiwan : NECI
  • Philippines : PICCS