Borchi® Gel PN 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 ammonia. Benefits include highly effective storage stability, as well as the prevention of settling and separation of pigments. There is no need for biocides when using this product.

Borchi® Gel PN can be used with our Borchi® Gen 1252 wetting and dispersing agent for titanium dioxide dispersions. Benefits of using both products together include no settling, improved viscosity variance over time after extended heat age stability, no change in gloss or contrast ratio, high opacity and strong tint strength. Borchi® Gel PN is more effective than fumed silica in TiO2 dispersions.

Borchi® Gel PN can also be used with our Borchi® Gen 1757 wetting and dispersing agent for bismuth vanadate pigment dispersions. Benefits of combining these products include better storage stability and anti-settling of bismuth vanadate pigments.

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, colorless to slight yellowish liquid
    Non-volatile contentNA
    Density1.23 g/cm3 DIN 51757
    (20 °C)

  • Features

    • Thixotropic additive for use in water-based coatings systems whose binders or additives contain free hydroxyl and carboxyl groups
    • Develops viscosity in the low shear range to prevent settling and separation
    • Improves viscosity stability after tinting with Universal Colorants in coatings
    • Once applied, the structure rebuilds slowly for improved flow and leveling while retaining good sag resistance
    • 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

    • 0.5 – 2.0% on total paint 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 PN used. The exact dosage should be experimentally determined. Borchi® Gel PN can be added to the mill-base or as a post add provided good mixing conditions are used.

  • 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
  • Switzerland : EINECS
  • USA : TSCA
  • Canada : DSL
  • New Zealand : NZIoC
  • China : IECSC
  • Korea : ECL
  • Taiwan : NECI
  • Philippines : PICCS