Adhesive, Caulk & Sealant

Imerys Kaolin product portfolio encompasses a full range from economical extenders to highly functional surface treated additives. Strong technical understanding of our products and their applications complements the natural value of the minerals we supply.

Imerys Kaolins are used in adhesive, caulk and sealant systems to control structure, consistency and body. Kaolin is a hydrated aluminum silicate crystalline mineral characterized by its fine particle shape and chemical inertness. The platy shape can give good barrier properties in sealants by creating a tortuous path to protect the material that has been sealed.

Imerys Calcined Kaolin are processed by heating the kaolin to high temperatures. This calcination process increases whiteness and hardness and modifies the particle shape. This particle shape offers a random agglomerate of controlled particle size, making it effective as a structure building component. Calcined kaolin has a neutral pH, which allows it to be used in both acid and alkali formulations.


  • Low Moisture content
  • Controlled particle size effective as a structure building component
  • Natural pH
  • High Whiteness
  • Cost savings in end product formulations

Look at the Product Finder section of this website to find the best kaolin products for your particular Adhesives, Caulk and Sealant grade, or contact us at one of our regional offices.

Adhesives & Sealants Brochure