
When it comes to creating high-performance, smooth, and cost-effective paint, one essential ingredient often goes unnoticed: Kaolin Clay Powder. This naturally occurring white mineral, rich in kaolinite (Al₂Si₂O₅(OH)₄), plays a vital role in the formulation of paints and coatings—from architectural emulsions to industrial primers.
What Is Kaolin Clay Powder?
Kaolin, also known as China clay, is a soft, white clay that is milled into fine powder form. Its natural brightness, chemical inertness, and platy structure make it an ideal functional extender in paint formulations.
🎯 Why Use Kaolin in Paints?
✅ 1. Cost Efficiency
Kaolin is an affordable mineral that replaces a portion of expensive pigments like titanium dioxide (TiO₂)—lowering overall costs without compromising quality.
✅ 2. Improved Opacity & Whiteness
The particle shape and brightness of kaolin enhance hiding power and whiteness, improving the paint’s visual appeal.
✅ 3. Rheology Control
Kaolin helps control paint thickness and flow (rheology), ensuring the product spreads evenly and dries smoothly.
✅ 4. Anti-Settling Properties
Due to its plate-like structure, kaolin keeps pigments in suspension, reducing sedimentation and improving storage stability.
✅ 5. Enhances Durability
Kaolin contributes to scrub resistance, weatherability, and film integrity, particularly in exterior coatings.
🖌️ Applications of Kaolin in Paints
Paint Type | Role of Kaolin |
---|---|
Interior Wall Paints | Provides smooth finish, cost savings |
Exterior Emulsions | Improves durability & water resistance |
Primers & Undercoats | Adds body and consistency |
Industrial Coatings | Withstands harsh environments |
Automotive Paints | Used in some formulations for gloss and filler properties |
📊 Typical Properties of Paint-Grade Kaolin
Brightness: 85–94%
pH: 6–7.5
Particle Size (D50): 1–2 microns
Moisture: < 1%
Oil Absorption: 30–40 g/100g
Note: Custom grades available for water-based and solvent-based systems.
🌍 Environmental Benefits
Kaolin is a natural, non-toxic, and recyclable mineral—making it a sustainable choice for modern eco-friendly coatings.
📦 Packaging Options
25 kg HDPE or kraft paper bags
1 MT jumbo bags
Custom packing available on request
📞 Looking for High-Quality Paint-Grade Kaolin Powder?
We offer refined, micronized kaolin powder tailored for paint and coating applications — consistent, high-brightness, and ready for bulk supply.
👉 Contact us today for samples, data sheets, and best pricing.

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