Name: Kaolin for Paint & Coatings
Brand: Darson

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Kaolin for Paint & Coatings

Kaolin (also called China clay)

In coating formulations, mineral extenders occupy volume that would otherwise require more expensive resin and pigment. UT-WHITE hydrous kaolin at D50 4.571 µm works as a functional extender in primers, undercoats, wall putty, cement paint, and mid-tone architectural coatings.

Its plate-like particles improve pigment spacing and film build, while its low oil absorption (46.8 g/100g) allows high loading without pushing up binder demand. UT-WHITE brings filler-grade whiteness at 80.3% ISO to primers, undercoats, putty, and mid-tone architectural coatings, at a cost per tonne that works at high loading.

Reduces formulation cost through mineral volume replacement
Improves film build and flow in primers and undercoats
Compatible with water-based and solvent-based systems

The TiO₂ Spacing Effect

UT-WHITE platelets support pigment spacing in the film

Performance Characteristics

Pigment Spacing

Plate-like particles occupy space between TiO₂ particles, supporting hiding power in the same formulation.

Low Oil Absorption

At 46.8 g/100g, UT-WHITE allows high loading without raising binder demand.

Cost Reduction

Mineral extender replaces higher-cost formulation volume.

Recommended Grades

Grades for paint and coatings formulations, focused on cost-reducing extension in primers, undercoats, and architectural coatings.

UT-LUMP

Entry-level hydrous kaolin, rotary-screened and sun-dried, as fine powder with small lumps. At 74.3% ISO brightness, a cost-effective choice for ceramic bodies, construction, and agricultural use.

Brightness (ISO)74.3%

Moisture0.51%

Mean Particle Size7.742 µm

D₅₀5.047 µm

Oil Absorption48.0 g/100g

pH7.02

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UT-WHITE

Finely ground hydrous kaolin with 80.3% ISO brightness and a consistent 400-1200 mesh particle size, for smoother, more uniform mixing. A bright, reliable filler for rubber compounds, plastics, paper, and adhesives.

Brightness (ISO)80.3%

Moisture0.33%

Mean Particle Size6.115 µm

D₅₀4.571 µm

Oil Absorption46.8 g/100g

pH8.0

Download Spec Sheet

Coming Soon

UT-WASH

A meticulously refined material developed for technical precision. The specialized washing process eliminates grit to ensure smooth, defect-free production in ceramics where structural integrity is critical.

ProcessPrecision Washing

Target WhitenessHigh (94%+)

Target QualityGrit-Free

Purity LevelReduced Contamination

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Coming Soon

UT-ULTRA

Our upcoming calcined kaolin grade, processed at high temperatures to maximize structural hide and opacity. Designed for specialty industrial applications requiring higher purity and performance.

ProcessFull Calcination

Target WhitenessExtremely High

Target QualityLow-Iron, High-Purity

Purity LevelNear-Zero Impurities

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Start Your Inquiry

Factory direct pricing for local and international orders. Darson exports kaolin FOB Bangkok to buyers across Thailand, Bangladesh, Malaysia, India, and Southeast Asia.

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