Economical organophilic clay with low LOI (<29%) providing thixotropy with low base viscosity. White fine powder, transparent gel. For transparent coatings, alkyd and polyester paints, diesel-based drilling fluids, lubricating grease, and inks.
CP-24 is an economical organophilic clay characterized by low organic modifier content (LOI <29%) that delivers thixotropic structure with minimal increase in base viscosity — a rheological profile useful in applications where gel-without-viscosity is the design target. White fine powder produces transparent, light-colored gel suitable for clear coatings, varnishes, and near-white paint systems. CP-24 is particularly positioned for alkyd paint, polyester paint, and transparent coating applications in low to medium polarity solvent systems.
Technical Properties
Parameter
Specification
Test Method
Chemical composition
Organic derivative of montmorillonite clay
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Appearance
Fine white powder
Visual
Moisture content
≤ 3.5%
105°C, 2 hours
Loss on ignition (LOI)
< 29%
1000°C
Bulk density
0.53 g/cm³
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Fineness
≥ 98% passing 74 μm (200 mesh)
Sieve analysis
Gel character
Thixotropy with low base viscosity
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Gel appearance
Transparent, light color
Visual
Applications and Dosage
Application
Typical Dosage
Key Reason for CP-24
Transparent coatings and clear lacquers
0.2–0.6 wt%
White powder, transparent gel — no haze
Alkyd paint
0.3–0.8 wt%
Economical, adequate anti-settling
Polyester paint
0.3–0.8 wt%
Low-medium polarity compatibility
Diesel-based drilling fluid
5–12 kg/m³
Diesel system compatibility
Lubricating grease
8–15 wt%
Economical thickener
Printing ink
0.5–1.5 wt%
Transparent gel, white powder, economical
Low LOI Advantage: CP-24's LOI <29% (vs CP-34 at 28–30%, CP-APA at 32–35%) reflects the lowest organic modifier loading in the standard coating-grade range. This produces a gel with higher TI-to-absolute-viscosity ratio — strong thixotropic character relative to base viscosity. For formulations where high TI is needed without high viscosity at working shear, CP-24's rheological profile is more appropriate than higher-LOI grades that build both structure and absolute viscosity simultaneously.
Frequently Asked Questions
What does "thixotropy with low viscosity" mean for CP-24?
CP-24 builds a high thixotropic index (strong gel at rest, low viscosity under shear) while keeping absolute base viscosity relatively low. This is useful in applications where good anti-settling and anti-sag are needed without excessive drag during pumping, spraying, or brushing. The lower organic modifier content (LOI <29%) produces gel structure without raising the Newtonian viscosity component that higher-LOI grades impart.
Why is CP-24 used in transparent coatings?
CP-24 is white powder producing transparent, light-colored gel — no yellow tint that would alter clear coating appearance. At 0.2–0.5 wt% in low to medium polarity solvents, CP-24 provides anti-settling without haze or cloudiness in the clear film. Lower LOI also means fewer organic modifier molecules potentially interacting with transparent resin films.
