You are here: Home / Products / solvent based system Rheological Additive / Organoclay CP-257 for Paints
Model: CP-257
Code: 38249999

Organoclay CP-257 for Paints

Product Description


CP-257 is a new style of organo clay rheological additive made from bentonite. It is used in solvent and resin systems covering low polarity to high polarity range.


Composition                                 Organic derivative of a montmorillonite clay

Appearance                                  Fine powder, light yellow

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

Loss on ignition (1000℃)              40%-45%

Bulk density                                   0.40~0.60g/cm3

Fineness (<74μm, %)                   ≥98%

Dispersion fineness (μm)              ≤8


      CP-257 is used in the following applications:

Ÿ   Paints including top grades paint, decorative paint, industrial paint

Ÿ   Grease, especially recommended in greases based on synthetic oils such as vegetable oil and polyester oil etc 。

Ÿ   Inks

Ÿ   Cosmetic

Ÿ   Sealants and adhesive


It can be added directly in powder under high shear condition. Addition level is commonly 0.1%~1.0% (7%-10% in greases) of total formulation by weight. In low and medium polarity solvents, polar activator is required to achieve better performance.

The addition procedure is suggested as below.

1.   Add resin in solvent.

2.   Add CP-257 under slow agitation.

3.   Disperse under high speed for 10-15 minutes.

4.   Add polar activator (95% ethanol or 95% acetone)

5.   Disperse under high speed for 10-15 minutes.

6.   Add wetting agent and other additive.

7.   Grinding and next procedure.

If to make pre-gel, better efficiency can be achieved. Addition level in pre-gel is 8%-10% of total pre-gel in weight.

Pre-gel procedure is as below.

1.   Add solvent or solvent mixture.

2.   Add CP-257  under slow agitation.

3.   Disperse under high speed for 5-10 minutes.

4.   Add polar activator.

5.   Disperse under high speed for 10-15 minutes.

Polar activator is suggested to be ethanol/water (95/5)or acetone/water (95/5). Dosage of polar activator is about 10%-35% of CP-257 by weight.


Note: The suggested addition level of our organoclay and polar activator is based on our lab testing. Exact dosage for detail formulation should be based on user’s testing.

NO.68 Huaqiao Road, Linan, Hangzhou, Zhejiang, China, 311300
About us
Zhejiang Camp-Shinning New Material Co., Ltd. is a specialized manufacturer of Organoclay Rheological additive and owns million Dollar of fixed assets.
Sign up for our newsletter to receive the latest news.