organo clay (modified montmorillonite)CP-27

Organoclay tetraallkyl ammonium bentonite

organo clay (modified montmorillonite)CP-27 is an organo clay (modified montmorillonite), designed especially for use in solvent based system. It is used especially in solvents of high polarity.


Composition                      Organic derivative of a montmorillonite clay

Appearance                       Fine powder, light yellow

Moisture content (105℃,2hr)         ≤3.5%

Loss on ignition (1000℃)            34.7%

Bulk density                       0.53g/cm3

Fineness (<74μm, %)               ≥98%


  • High gelling efficiency
  • Produce reproducible thixotropic consistency over a wide temperature range
  • Imparts particle suspension, preventing hard settling of pigment and fillers
  • Exerts strong film reinforcing action in organic binder systems


CP-27 is used in the following applications:

  • Marine paint, Industrial paint, heavy-duty, anticorrosion paint (especially forepoxy paint)
  • Grease
  • Ink
  • Sealant
  • Unsaturated polyester putty


CP-27 disperses under high shear and requires a polar activator for best efficiency. Heat is not required to obtain good dispersion. Addition levels are typically in 0.2%~2.0%. Normally addition level of polar activator (95% Ethanol or 95% Methanol) is recommended to be 45%~60% of CP-27 in weight.


Kraft paper bag with PE liner or multi-wall paper sacks or customized. 25kg/bag or 22.68kg/bag or customized