Name: Darson Kaolin for Adhesives & Sealants
Brand: Darson

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Kaolin for Adhesives & Sealants

Kaolin (also called China clay)

Adhesives and sealants need to flow easily when pumped but stay in place (not drip) once applied. This property is called thixotropy.

UT-WHITE modifies the rheology of adhesives. Its fine platelets stack up to build viscosity at rest (preventing slump on vertical surfaces) but slide past each other under pressure (easy application). It also prevents adhesive from soaking too deeply into porous substrates like cardboard.

Prevents Slump & Drip
Controls Penetration (Holdout)
Lowers Formulation Cost

Gap Filling Mechanism

UT-WHITE builds body to bridge gaps without dripping

Performance Characteristics

High Viscosity

Increases body and texture in water-based and solvent-based adhesives.

Fast Tack

Helps improve initial grab strength, crucial for packaging glues.

Inert Chemical

Stable in starch, latex, and synthetic resin systems.

Recommended Grades

Grades for adhesive and sealant formulations, controlling rheology, reducing cost, and improving thermal and moisture resistance.

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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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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