Welcome to Imerys Performance Minerals

ImerCarb & PolCarb

ImerCarb & PolCarb

  • High loading extenders
  • Rheological modifiers
  • Processability enhancers

Imerys ImerCarb and PolCarb are fine ground calcium carbonates (GCC) which can be used as high loading extenders in rubber without impacting mechanical properties:

  • ImerCarb is a range of ground calcium carbonates manufactured from high quality crystalline marble at our Belgian and Italian processing facilities.
  • PolCarb is a range of ground calcium carbonates produced from our high quality chalk deposits in both the UK and France.

Fine ground carbonates are used in rubber applications as high loading extenders, rheological improvers and processability enhancers.

PolCarb and ImerCarb are available in both uncoated and surface treated grades.

Surface treatment reduces moisture pickup and improves dispersion in polymer systems.


Used in rubber compounds, ImerCarb and PolCarb:

  • Lower compound cost
  • Provide electrical insulation
  • Modify elasticity
  • Improve mold release


ImerCarb and PolCarb grades are recommended for:

  • Tires
  • Seals
  • Hoses
  • Cable sheathing and insulation
  • Flooring
  • Footwear



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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