Welcome to Imerys Performance Minerals

Mica MU

Mica MU For superior barrier properties in stain blocking primers

  • Excellent stain blocking performance
  • Reinforced barrier effect
  • Easy to formulate

Mica MU M2/1 is a highly lamellar, micronized mica grade with a 20µm top cut. Due to this high lamellarity, mica MU M2/1 provides excellent stain blocking performance in primer applications.

Mica MU™ M2/1 is highly lamellar micronized mica with a 20µm top cut

Mica MU M2/1 for stain-blocking primers

Mica MU M2/1 is recommended for solvent- and water-based primer applications requiring superior stain-blocking, where it:

  • Improves barrier protection over time, significantly limiting stain migration
  • Enhances adhesion and anti-cracking
  • Improves UV protection in paints
  • Is a cost-effective and easy-to-formulate solution

Due to its ultra-lamellar particle shape Mica MU™ M2/1 creates a physical barrier in the paint film

For superior stain blocking in finishing paints, we recommend our SteaShield 10 ultra lamellar talc grade.

EU REACh and Ecolabel

Mica MU products are derived from naturally occurring, chemically inert minerals that are simply ground to achieve a specific particle distribution size. We do not use additives in our processes. As such, they are exempt from EU REACH registration and compliant with EU Ecolabel criteria governing organic paints.


We offer a full range of bespoke formulation and technical and process support services to help you match the right mineral grade to your application requirement.

Please contact us, we will be only too happy to help

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