Kaolin for Adhesives & Sealants

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

Darson Kaolin 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

Kaolin 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.

Our Product Solutions for Adhesives

High Grade

UT-WHITE Series

Finer particle size for thin-film adhesives where smoothness and penetration control are critical.

SiO₂48.5%

Al₂O₃36.0%

Whiteness> 85%

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RECOMMENDED

Standard Grade

UT-CLAY Series

Versatile filler for corrugated board adhesive (starch-based) and general purpose glues.

SiO₂48.5%

Al₂O₃36.0%

Mesh325

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Premium Grade

UT-ULTRA Series

Calcined kaolin for moisture-sensitive sealants and high-performance epoxy systems.

Moisture< 0.5%

Al₂O₃High

ColorWhite

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Frequently Asked Questions

Does it work in corrugated board?

Yes. Adding kaolin prevents the adhesive (usually starch-based) from soaking too deep into the paper liner. This keeps the glue on the surface where it forms a bond, saving glue and preventing "washboarding".

Can it reduce drying time?

Yes. By increasing the solids content of the adhesive without making it too thick to pump, kaolin helps the glue set faster as there is less water to evaporate.

Does it settle in the tank?

Our kaolin is processed to a fine particle size which stays suspended well in most adhesive formulations with minimal agitation.

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Factory direct pricing for local and international orders.

DARSON CO., LTD
Kampaengsaen, Nakhon Pathom, Thailand