Expancel WE is a brilliant cost-saving, weight-reducing lightweight filler for a number of industries where these objectives need to be met. Used in waterborne products, the tiny spherical particles (20μm - 55μm) will allow for a higher PVC (pigment volume concentration) with less binder requirements. The high solar reflectance of the microspheres helps cool roof coatings decrease roof temperatures, lessening the need for air con. While it achieves incredible filling capacity for upgrading genuine or artificial leather.

Product-enhancing benefits

Expancel WE
  • Reduces weight and improves application in paint and crack fillers
  • High solar reflectance and increases thermal insulation
  • Reduces shrinkage
  • Achieves better leather upgrades compared to conventional methods
  • Saves costs on binder/resin

Specification and SDS. The beauty is in the science.

Request a sample of Expancel WE and speak to our experts for product advice.

Variations of Expancel

Estimated particle size µm. D (0.5)

Solid content(1) 

True density(2) kg/m3 True volume(1) l/kg Solvent chemical resistance(3) Safety Data Sheet
461 WE 20 d36 20–30 15 ± 2 36 ± 4 4,2 ± 0,45 3 SDS>
461 WE 40 d36 30-50 15 ± 2 36 ± 4 4,2 ± 0,45 3 SDS>
921 WE 40 d24 35–55 10 ± 1.5 24 ± 3 4,2 ± 0,45 5 SDS>

(1) "Analytical Method No 22"
(2) "Density mesurement of Expancel MS"
(3) "Chemical resistance of Expancel MS"

Packed on pallets with 20 polyethylene bags, each bag with a net weight of 10 kg Volume approx 1,5 m3, incl pallet.

Use the product within 2 years after production date, if unopened.

Not all grades available in all locations. Check local sales office for availability.

Why buy from AkzoNobel

  • AkzoNobel developed and has produced Expancel for more than 35 years
  • Own production plants in Sweden, China, USA and Brazil
  • We deliver a total solution, from top quality microspheres to product development support and on-site expansion systems
  • Experienced sales and application engineers will work closely with you all the way

Product specifications

Contact us about Expancel

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We have an R&D organization with the capabilities and expertise to maximize the benefits of Expancel in your application.