Discover how Aspanger mineral fillers help improve durability, barrier performance and consistency in adhesives and sealants, construction, industrial coatings, inks, paints, paper, and textile and leather
Aspanger: a specialist producer of muscovite mineral fillers
Aspanger Bergbau und Mineralwerke GmbH is a specialist producer of functional mineral fillers, based in Austria. The company has been mining and processing industrial minerals from its own deposit near Aspang for more than a century, building deep expertise in muscovite-based materials.
Aspanger stands out for its vertically integrated operation, combining controlled raw material extraction with advanced wet and dry processing. This approach supports consistent quality, long-term availability and clear traceability. Our partnership with Aspanger focuses on bringing these technically reliable mica and mineral filler solutions to customers seeking dependable performance across a wide range of formulated systems.
Aspanger’s values: quality-driven mineral and mica production
Aspanger originated in traditional mineral extraction and, over many years, evolved into a modern producer of functional fillers for international markets. The company’s core values centre on technical reliability, material consistency and disciplined production practices.
Quality is addressed through precise grading, careful classification and ongoing process control, ensuring that each muscovite and mica filler performs predictably in a formulation. Aspanger’s reputation is built on long-term customer relationships, stable supply and mineral solutions designed for demanding industrial environments.
Aspanger product range: MICA, Aspolit and Aspolit W mineral fillers
Aspanger offers a focused portfolio of high-performance mineral fillers engineered to improve mechanical properties, barrier performance and surface quality.
MICA: High-purity muscovite mica filler
Aspanger MICA is a high-purity muscovite mica with a lamellar particle structure and high aspect ratio. It improves barrier performance, reduces permeability and supports dimensional stability. Low oil absorption promotes efficient wetting and dispersion, helping formulators achieve consistent results in coatings, inks and compound systems.
Aspolit: Multi-component mineral filler combining muscovite mica and quartz
Aspolit is a formulated mineral filler that combines muscovite mica with quartz to deliver balanced barrier and reinforcement properties. Controlled particle sizing, low oil absorption and good elasticity make Aspolit particularly suitable for water-based systems and mechanically demanding applications.
Aspolit W: mineral fillers optimised for water-based and thick film systems
Aspolit W grades are bright, performance-focused fillers based on muscovite mica, quartz and chlorite. These mineral fillers are designed to support film build, reduce shrinkage and cracking, and enhance adhesion and opacity in waterborne formulations.
All Aspanger filler products are manufactured under recognised quality and environmental management systems, reinforcing confidence in consistency and reproducibility.
Application focus: where Aspanger mineral fillers add value
- Adhesives and sealants: support improved adhesion, controlled rheology and reduced shrinkage. Their lamellar mineral structure contributes to crack resistance and dimensional stability over time.
- Construction: enhance abrasion resistance, surface quality and resistance to weather exposure. Aspolit and Aspolit W grades are particularly suited to water‑based formulations.
- Industrial coatings: improve barrier performance, helping reduce permeability while maintaining consistent film build, surface quality and processing behaviour. This consequently leads to extended durability and weathering resistance.
- Printing inks and decorative paints: supports improved coverage and surface uniformity in inks and decorative paints, contributing to stable rheology and predictable application properties.Also improves crack resistance in high film build paints and emulsion plasters.
- Paper: support opacity and surface characteristics where consistent mineral quality is required.
- Textile and leather: provide mechanical reinforcement and durability without compromising finish appearance or application consistency.
Supply reliability during current mica market constraints
Current market conditions have resulted in reduced availability of some micro mica grades across the coatings and construction industry. Aspanger's vertically integrated manufacturing model combines raw material extraction with in-house wet and dry processing, supporting greater control over production and product consistency.
Key considerations include:
- Vertically integrated production: Raw material extraction and processing are managed within Aspanger's operations, supporting manufacturing control and traceability.
- European manufacturing: Production is based in Austria, providing a European source for mica and mineral fillers.
- Consistent quality approach: Integrated processing helps maintain product quality and batch-to-batch consistency.
- Technical support: Customers can discuss product selection and application requirements with their local IMCD technical team.
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