Hydrous Kaolin Filler
from Source to Industry

Versatile white mineral filler, mined and processed in Thailand. Ready for rubber, plastics, paper, 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

A natural hydrous kaolin with 96.6% ISO brightness, ground to D50 4.571 µm using alumina ball milling to prevent iron contamination. A reliable functional white filler for rubber compounds, plastics, PVC, paper filling, adhesives, and powder-based formulations across a wide range of industries.

Brightness96.6%
SiO272.2%
Al2O313.7%
pH Value8.0
Oil Adsorption (g/g)0.468
Median Size (D50)4.571 μm
Particle Size400-1200 Mesh
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.

ProcessPrecision Washing
Target GritZero (0.000% on 400 Mesh)
Target WhitenessHigh (94%+)
Purity LevelLess Contamination
Primary UseCeramics & Precision 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.

ProcessFull Calcination
Target WhitenessExtremely High
Target QualityMedical Grade Sterile
Impurity LevelZero Contamination
Primary UseSpecialty Coatings
Request Early Access
Applications

Industries Served

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

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.

We will contact you back as soon as possible.

Darson