Precipitated Calcium Carbonate for Transportation Adhesive & Sealant Applications

Specialty Minerals Ultra-Pflex®, Thixo-Carb® and Calofort® grades of ultrafine precipitated calcium carbonate act as functional additives in automotive sealant formulations for rheology control and reinforcement properties.  Particle morphology, particle size and distribution, surface area and treatment can be designed to meet the needs of sealant formulators.





Specialty Minerals Inc. (SMI) produces consistent high quality coated ultrafine Precipitated Calcium Carbonate in Adams, Massachusetts and Birmingham, United Kingdom providing global availability.


The Benefits of Specialty Minerals PCC products:

  • Rheological additive that builds a true thixotropic, shear-thinning structure in the polymer, improving yield value, sag, slump, and extrusion rates.
  • Ultrafine PCCs reinforce the polymer, increase tensile strength and modulus while maintaining adhesion properties.
  • A cost effective additive both as a sole thixotrope or in combination with other additives.





*Specialty Minerals Inc. offers analytical and lab support capabilities by industry experts in core markets.


Other SMI Minerals in Transportation Sealants


SMI also produces ground calcium carbonate (GCC) and Barretts Minerals Inc. (BMI) produces talc products that are useful in transportation sealants. 

GCCs are used as cost-reducing fillers in almost all sealants and work effectively with PCC thixotropes.  Finer GCC grades produce higher viscosity build while the coarser grades allow for higher loadings and the best economy.

Talcs improve resistance to water and chemicals.  While most polymers used in transportation sealant applications already are long-lived, certain systems may further benefit from the addition of talc.

For more information regarding GCC and talc in Transportation Sealants, please contact us.