Kaolin (China Clay) — Industrial Kaolinite for Paints & Coatings

Kaolin (also known as china clay) is a naturally occurring kaolinite-rich mineral widely used as an extender and functional filler in paints, coatings and other industrial formulations. At Hippo Minerals we supply consistently processed kaolin grades tailored for pigment replacement, rheology control and opacity enhancement in decorative and industrial coatings.

Our kaolin delivers reliable particle size distribution and brightness, helping formulators achieve stable dispersion, improved bulk and predictable viscosity behavior — making it a cost-effective ingredient for paint manufacturers across South Africa.

Key benefits / features:

• Acts as an economical extender/volume filler in paints and coatings.
• Supports desired rheological properties and improves suspension/dispersibility of pigments.
• Adds bulk and helps control gloss and film appearance.
• Provides consistent particle size distribution for predictable performance in production.
• Readily available from Hippo Minerals with local support and technical documentation.

Applications / Industries:

• Architectural paints & decorative coatings
• Industrial coatings and primers
• Powder coatings (where applicable)
• Paper, plastics, rubber and ceramics (as a functional filler)
• Adhesives and sealants

GRADES AVAILABLE

Koalin M

• Appearance: Off-white
• Particle size: ~1% > 45 µm (typical)
• Reflectance (brightness): 79–83% (typical)
• Typical use: Standard paint extender and bulk filler for interior/exterior coatings

Kaosil 50

• Positioning: Engineered as a kaolin replacement specifically optimised for paint applications
• Typical benefits: Improved dispersion and rheology vs. generic fillers; formulated to help reduce binder demand and maintain film performance (confirm with TDS)
• Typical use: High-volume formulations where cost/performance balance is required