Rheology Additives organoclay

Clay HS Code

Rheology Additives organoclay CP-40,with high gelling efficiency,high viscosity  is an organo clay (modified bentonite), designed especially for use in solvent based system. Rheology modifier can be used widely in solvents from low polarity to medium-high polarity.


Composition                      Organic derivative of a montmorillonite clay

Appearance                       Fine powder, light yellow

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

Loss on ignition (1000℃)            28%-31%

Bulk density                                0.53g/cm3

Fineness (<74μm, %)                  ≥98%


High gelling efficiency,high viscosity

Wide application range, it can be applied in all low, middle and high polarity range 

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


Rheology Additives organoclay Viscosifiers CP-40 is used in the following applications:

Marine paint, Industrial paint, heavy-duty, anticorrosion paint such as bituminous coatings, epoxy paints, chlorinated rubber paints 





Rheology Additives organoclay CP-40 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%. Polar activator (95% Ethanol or 95% Methanol) is needed. Normally addition level of polar activator is recommended to be 45%~60% of CP-40 in weight. If in xylene system, addition level of polar activator is about 30%-40% of Rheology Additives organoclay CP-40 in weight.

Pre-gel is made as below procedure.

  1. Charge solvent to mill
  2. Slowly addRheology modifier CP-40 (6-10% by weight of total pre-gel) to mill under agitation.
  3. Mix at high speed for 5 minutes.
  4. Add polar activator.
  5. Mix at high speed for 5 minutes.


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-40 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 is without guarantee or warranty, since the conditions of use are outside our control. 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.

If you are interesting our Rheology Additives organoclay,pls mail us:

[email protected]