Ca-coated microspheres are an expanded microsphere coated with nanometer calcium carbonate, which is a free-flowing, agglomerate-free and powder-like material. Unlike most other polymeric microspheres, this product is not an explosion hazard and less dusting.

Ca-coated Microspheres have shown utility in a variety of end uses, including plastics, coatings and adhesives, reducing product weight and lower volume costs by extending or displacing more costly resins.


Nominal Density: 130 kg/m3

Particle Size: 45-65 μm

Chemical Composition

  • Shell – polyvinylidene chloride
  • copolymer
  • Coating - calcium carbonate

Heat Resistance: 120°C (time dependent)

Moisture: 0.2-2.0%

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