Welcome to Imerys Performance Additives Division

Pharmaceutical closures

Pharmaceutical closures Imerys talc improves the mechanical and physical properties of medical stoppers

Imerys talcs provide the barrier properties and durability critical to prevent substances contained in bottles from oxidizing.

Imerys talc improves the barrier properties of rubbers used for medical stoppers allowing them to meet strict design specifications regarding contact of vulcanized rubbers with pharmaceuticals.

Imerys talc:

  • Is an ideal reinforcing agent, improving mechanical properties of stoppers
  • Is an effective processing aid, lowering compound viscosity and improving compound flow
  • Improves barrier properties, hence impermeability
  • Provides good thermal resistance and color retention, extending service life
  • Is chemically inert and does not react with medical substances, having no effect on the level of reducing substances, pH and UV light adsorption
  • Is a natural, environmentally friendly solution

We particularly recommend our Mistron® CB and Mistron® Vapor talcs for this application, especially when low compression set, low fragmentation and high tear resistance are required.

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

Contact us Contact

Rubber