Wet Expanded Microspheres is a super lightweight organic filler with water surrounding the outer shell, which can be used in waterborne products. For example, it will help use less binder in the ink application, improve the solar reflectance in the paint product, and also create special surface finish for the leather.

Benefits of Wet Expanded Microspheres

  • Less shrinkage
  • Solar reflectance
  • Thermal insulation
  • Reduces weight and cost
  • Special surface modification


Grade Solid Content, % Average Particle size, µm(D50) True Density, kg/m3 Softening Temp, °C
WP20W 15±2 20-30 200-220 110±5
WP40W 15±2 30-50 180-200 100±5
WP80W 15±2 70-90 160-180 120±5
WP100W 15±2 90-110 130-150 85±5

Want to Learn more?

We are here to help. Our application team are ready to maximize the benefits of Waytop Microspheres in your application.