Borchi® Gel NA is a low shear thixotropic thickener that improves viscosity stability after tinting with universal colorants in water-based coatings systems.

This rheology modifier is a VOC-, APEO- and tin-free organic zirconium complex neutralized with sodium hydroxide. Benefits include highly effective storage stability, as well as the prevention of settling and separation of pigments.

Borchi® Gel NA does not contain any odor and be used as a post additive to adjust final viscosity in formulations. The concentration level is important as too high a level can lead to excessive crosslinking, which may cause separation and structure loss.

  • Physical Characteristics

    AppearanceClear to slight turbid, colorless to yellowish liquid
    Non-volatile contentN/A
    pH6-8
    Density1.33 g/cm3 DIN 51757 (20°C)
    ViscosityN/A
    Solvent(s)Water

  • Features

    • Low shear thixotropic thickener for use in water-based coatings
      systems whose binders contain free hydroxyl and
      carboxyl groups
    • Develops viscosity in the low shear range to prevent
      settling and separation
    • Improves viscosity stability of a coating after tinting with
      Universal Colorants
    • Can be used as post additive to adjust the final viscosity
      of a formulation
    • VOC-free
    • APEO-free
    • Tin-free

  • Applications

    • Wide range of polymer systems
      • Vinyl acetate
      • Acrylic
      • Styrene acrylic
      • Colloid
      • Surfactant stabilized polymers
    • Coatings
      • Interior
      • Exterior

  • Dosage

    Typical usage levels are 0.5 – 2.0 % as supplied based on the total weight of the formula. In difficult systems it could be necessary to increase the dosage up to 5 % (as supplied) on total formulation. The degree of thixotropy will depend on the type of reactive groups present in the system, the pH of the coating (ideally between 7.5 and 8.5), the level of the desired gel structure and the amount of Borchi® Gel NA used. The exact dosage should be experimentally determined. We recommend adding Borchi® Gel NA at the end of the formula under good mixing conditions to prevent gel seeds from forming and to develop a homogeneous gel structure.

  • Storage

    Protect from the effects of weathering and store at temperatures between 5 and 30 °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
  • Korea : ECL
  • Taiwan : NECI