Rheology modifier CP-300A

Rheology modifier CP-300A

Rheology modifier CP-300A | Rheology modifiers in paints

Rheology modifiers in paints could prevent hard settling of pigment and fillers. Rheology modifier CP-300A has good thixotropy in paints coatings.

 Organic bentonite clay is an Organoclay rheological additive (modified montmorillonite), Rheology modifier designed especially for use in solvent based system including intermediate and low polarity range organic liquid.  

Rheology modifiers in paints

Rheology modifiers in paints
Rheology modifiers in paints


Composition                              Organic derivative of a montmorillonite clay

Appearance                                Fine powder, white

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

Loss on ignition (1000℃)            29%-32%

Bulk density                               0.53g/cm3

Fineness (<74μm, %)                  ≥98%


  • Exerts gelling efficiency over a wide range of intermediate and low polarity
  • Easy dispersing
  • The gel is colourless and of high clarity
  • Produce reproducible thixotropic consistency over a wide temperature range
  • Imparts particle suspension, sag resistance without impairing flow and leveling, preventing hard settling of pigment and fillers
  • Exerts strong film reinforcing action in organic binder systems


Rheology modifier CP-300A is used in the following applications:

  • Paints & coatings with solvent of low to medium polarity
  • Lubricant Grease, ink, sealant
  • Cosmetic
  • Refractory


Rheology modifier CP-300A disperses under high shear and requires a polar activator (30%~40%)  for best efficiency. Heat is not required to obtain good dispersion. Addition levels are typically in 0.2%~2.0%. Polar activator (95% Ethanol or 95% Methanol) is needed. Normally addition level of polar activator is recommended to be 30%~40% of  Rheology modifier CP-300A in weight.


All safety information is provided in the Material Safety Data Sheets for Zhejiang Camp-Shinning New Material Co.,Ltd..


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


Rheology modifier CP-300A has a shelf life of 2 years, and should be stored in ventilated cool and dry place. 


The information on use is based on data which are believed reliable, but any recommendation or suggestion made are without guarantee or warranty, since the conditions of use are outside our control. All Rheology modifier are sold on the conditions that purchasers shall make their own tests to determine the suitability of such products for their purpose and that all risks are assumed by user. We disclaim any responsibility for damages resulting from careless or improper handling or use. Nothing herein is to be taken as permission, inducement or recommendation to practice any patented invention without a license.

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Rheology modifiers in paints

Rheology modifiers in paints