Rheology Modifier for Pigment Wetting and Stabilization

Borchi® Gel L 75 N is a polyurethane-based, non-ionic liquid rheology modifier for pigment wetting and stabilization that is VOC-, APEO-, and organo tin-free. It is a HEUR thickener that develops viscosity stability in water-based coatings mainly in the medium shear range. However, Borchi® Gel L 75 N can also provide well-balanced efficiency in high shear ranges. Typically, the shear range is between 1000 s-1 to 10000 s-1 depending upon the binder type and other ingredients in the coating.

Benefits of Rheology Modifiers for Pigment Wetting and Stabilization

Along with pigment wetting and stabilization, Borchi® Gel L 75 N has a variety of additional benefits. These include the promotion of flow and leveling, sag prevention, and the ability to not cause yellowing or chalking in the cured film.


Borchi® Gel L 75 N can be used in universal applications for brush and roll. This solution is known to be especially effective in anti-corrosive coatings.

  • Physical Characteristics

    AppearanceLiquid, yellow
    Non-volatile content48 – 52 % ISO 3251 (1g, 125 °C, 1h)
    pH6 – 8
    Density1.08 g/cm3 DIN 51757 (20 °C)
    Viscosity5000 – 9000 mPa.s (23 °C) ISO 3219 (Appendix A)

  • Features

    • Develops viscosity stability in water-based coatings mainly in the medium shear range
    • Improves rheological properties of water-based coatings systems for easier brush and roller application
    • Does not yellow or cause chalking in the cured film
    • VOC-free
    • APEO-free
    • Organo tin-free

  • Applications

    • Coatings
      • Acrylic gloss
      • Anti-corrosive
    • Small particle size emulsions

  • Dosage

    • 0.1 – 2.0% on total paint formulation

    Gloss paints may require a higher amount. The exact dosage should be experimentally determined. The thickening action of Borchi® Gel L 75 N may be reduced by polar, water soluble film forming solvents such as alcohols, glycols and glycol ethers. However, low polar solvents such as butyl diglycol acetate and Texanol® will increase the viscosity effect.

  • 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
  • Australia : AICS
  • New Zealand : NZIoC
  • China : IECSC
  • Japan : ENCS
  • Korea : ECL
  • Taiwan : NECI
  • Philippines : PICCS