White Kaolin Filler
mined and milled in Thailand

High brightness kaolin filler for rubber, plastics, paper, paints, and more.

Our Story

A commitment to quality at every step, managing raw purity from our mine to your refined solution.

Kaolin mines at Uttaradit

The Source: Uttaradit Mine

Our journey begins in the mineral-rich hills of Uttaradit, where Darson operates its own private mining concession.

By controlling the source, we bypass third-party inconsistencies, carefully selecting only the purest raw kaolin seams. This direct oversight ensures that every batch starts with a foundation of uncompromised quality.

1

Single Source

1,000,000mt

Kaolin Reserve

The Refinement: Nakhon Pathom

Located at our 38,400 sqm facility, we process raw materials using advanced Dry Grinding & Ball Mill technology.

Why Alumina Balls?

Crucially, we utilize high-grade alumina balls as our grinding medium. Unlike steel balls, alumina prevents iron contamination (rust), maintaining consistent brightness and purity across all product grades.

80km

From Bangkok

2,000mt

MONTHLY CAPACITY

Ball Mill Grinder

Ball Mill Grinder

Alumina Balls

Alumina Balls

Product Grades

Hydrous kaolin grades for rubber, plastics, paper, adhesives, and specialty formulations across multiple industries.

UT-WHITE High Brightness Kaolin

UT-WHITE

Hydrous kaolin with 80.3% ISO brightness and a fine 400-1200 mesh particle range. A bright, reliable filler for rubber compounds, plastics, paper, and adhesives where consistent whiteness and cost efficiency matter most.

Brightness (ISO) 80.3%
Moisture 0.33%
Mean Particle Size 6.115 µm
D50 4.571 µm
Oil Absorption 46.8 g/100g
pH 8.0
Download Spec Sheet
UT-WASH Precision Kaolin
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.

Process Precision Washing
Target Whiteness High (94%+)
Target Quality Grit-Free
Purity Level Reduced Contamination
Primary Use Filler & Coatings
Request Early Access
UT-ULTRA Premium Calcined Kaolin
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.

Process Full Calcination
Target Whiteness Extremely High
Target Quality Low-Iron, High-Purity
Purity Level Near-Zero Impurities
Primary Use High-Opacity Extender
Request Early Access
Applications

Industries Served

Rubber
Plastics & Masterbatch
Paper
Adhesives & Sealants
Paint & Coatings
Agriculture
Cosmetics
Construction
Ceramics & Tiles

Start Your Inquiry

Contact our sales team for quotations, samples, or grade selection advice.

We will contact you back as soon as possible.

Darson