organo clay modified bentonite CP-34

Organoclay tetraallkyl ammonium bentonite

organo clay modified bentonite CP-34

CP-34 is an organo clay (modified bentonite), designed especially for use  in solvent based system. It 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%-30%

Bulk density                       0.53g/cm3

Fineness (<74μm, %)               ≥98%


High gelling efficiency

Light color gel

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-34 is used in the following applications:

Marine paint, Industrial paint, heavy-duty, anticorrosion paint such as bituminous coatings, polyester paints, Alkyd paints.




Unsaturated polyester putty


CP-34 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 40%~50% of CP-34 in weight. If in xylene system, addition level of polar activator is about 30%-40% of CP-34 in weight.

Pre-gel is made as below procedure.

Charge solvent to mill

Slowly add CP-34(6-10% by weight of total pregel) to mill under agitation.

Mix at high speed for 5 minutes.

Add polar activator.

Mix at high speed for 5 minutes.


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