Industrial Applications

Kaolin for Plastics & Masterbatch

Prevents film blocking (Anti-Block) and improves thermal properties for greenhouse film.

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Kaolin for Plastics & Masterbatch

In plastic compounding, mineral fillers serve two functions: reducing raw material cost by extending expensive resin and TiO₂, and adding physical properties such as stiffness, surface spacing, and brightness.

UT-WHITE hydrous kaolin — with a D50 of 4.571 µm and 96.6% ISO brightness — works as a cost-effective white mineral filler in PVC compounds, PE/PP masterbatch, and film applications. Its platey particle shape creates micro-separation between film layers (anti-blocking), while its high brightness makes it a practical partial extender of TiO₂ in white and light-colored masterbatch.

  • Anti-blocking filler in PE/PP film applications
  • TiO₂ extender in white and light-colored masterbatch
  • Cost-effective mineral filler in PVC and polymer compounds

Anti-Blocking Mechanism

Layer 1 Layer 2 Air Gap (No Sticking)

UT-WHITE particles create separation between film layers

Performance Characteristics

96.6% Brightness

High ISO brightness allows UT-WHITE to extend or partially replace TiO₂ in white masterbatch and light-colored compounds, reducing formulation cost.

Anti-Blocking

Platey particle shape creates micro-roughness on PE/PP film surfaces, preventing layers from sticking together during winding and storage.

Polymer Compatible

Chemically inert and easy to incorporate into PE, PP, PVC, and other common polymer systems at standard compounding temperatures.

Recommended Grades

Grades for plastic compounding and masterbatch, improving stiffness, reducing resin cost, and enhancing surface finish in PE, PP, and PVC applications.

UT-WHITE High Brightness Kaolin

UT-WHITE

UT-WHITE is a natural hydrous kaolin with 96.6% ISO brightness, ground to D50 4.571 µm using alumina ball milling to prevent iron contamination. Delivers anti-blocking performance in PE and PP film and acts as a cost-effective TiO₂ extender in white masterbatch formulations.

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 washed, low-grit grade for plastic applications where surface quality matters. Low grit content prevents surface defects and equipment wear in thin films, clear compounds, and injection-moulded parts.

ProcessPrecision Washing
Target GritZero (0.000% on 400 Mesh)
Target WhitenessHigh (94%+)
Purity LevelLess Contamination
Primary UseCeramics & Precision Coatings
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UT-ULTRA Calcined Kaolin
Coming Soon

UT-ULTRA

Our upcoming calcined grade with maximum brightness and ultra-low metallic content, targeting engineering plastics, medical-grade compounds, and specialty films where purity and optical performance are non-negotiable.

ProcessFull Calcination
Target WhitenessExtremely High
Target QualityMedical Grade Sterile
Impurity LevelZero Contamination
Primary UseEngineering & Medical-Grade Plastics
Request Early Access

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.

Inquire: sales@darson.co.th
Have a chat: +66 65 393 2426
Come visit: Nakhon Pathom, Thailand
Darson