Omyaprene™ 50 C

The next-generation functional filler for sustainable rubber compounding

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Introducing Omyaprene™ 50 C

Omya, a global leader in calcium carbonate production and specialty materials distribution, is committed to advancing environmental, social, and economic sustainability through innovative solutions. Building on this commitment, Omya is pleased to introduce Omyaprene™ 50 C, a functional filler that enables manufacturers to reduce carbon black (CB) content in rubber formulations by up to 50% while maintaining performance.

By lowering reliance on carbon-intensive raw materials, Omyaprene™ 50 C helps manufacturers reduce the carbon footprint of rubber compounds, improve cost efficiency, and support circular economy objectives. This innovative solution contributes to the industry's transition toward more sustainable, high-performance rubber products without compromise.

Reduce carbon black without compromising performance

As the rubber and elastomer industry accelerates its transition toward sustainability, manufacturers are seeking innovative materials that reduce environmental impact while maintaining product performance.

 

Omyaprene™ 50 C is a high-performance functional mineral filler engineered to partially replace carbon black in rubber compounds, helping manufacturers advance their sustainability goals without compromising quality.

Adhesives and Sealants_LWF

Why choose Omyaprene™ 50 C?

Innovative coating

Chemically coupling with the rubber matrix, enhancing reinforcement

Mechanical integrity

Maintains or improves tensile strength, compression set, elongation at break, and tear resistance

Curing efficiency

Keeps scorch and cure times within optimal ranges; functions with sulfur and peroxide curing systems

Eco-friendly

Reduces CO₂ footprint and supports circular economy initiatives; Omyaprene™ 50 C has less than 180 kg CO₂-eq/ton

Processing advantage

Lower mixing torque, improving flow, while preserving the same extrusion and curing processing conditions

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Omyaprene™ 50 C in action

Designed for a wide range of rubber and elastomer applications, Omyaprene™ 50 C enables the development of more sustainable rubber formulations by lowering reliance on carbon-intensive raw materials.
The solution supports OEMs, compounders, and suppliers in reducing the environmental footprint of their products while maintaining critical mechanical and processing properties.
Omyaprene applications

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Need expert support for your formulation?  

 

Whether you are developing a new masterbatch or improving an existing compound, Omya’s global team provides:  

  • Technical formulation support  
  • Product selection guidance  
  • Innovation partnerships  
  • Commercial and supply expertise  

We work closely with customers to deliver tailored solutions that meet specific performance and sustainability requirements.

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Omyaprene Technical Experts

FAQ - Omyaprene™ 50 C

Laboratory and industrial evaluations have demonstrated that Omyaprene can replace significant amounts of carbon black depending on the application and performance requirements.

Typical evaluations have demonstrated:

- Up to 30 phr carbon black replacement with minimal property changes.

- Up to 50 phr carbon black reduction in selected EPDM compounds while maintaining acceptable mechanical properties. 

Actual replacement levels depend on polymer type, carbon black grade, and end-use requirements. 

No significant loss in tensile strength has been observed within the validated replacement range. In several benchmark studies, compounds containing Omyaprene maintained tensile strength and, in some cases, showed improvements compared to standard calcium carbonate-filled compounds. 

Compression set is one of the strongest performance advantages of Omyaprene.

Multiple evaluations demonstrated:

- Lower compression set values than standard calcium carbonate grades.

- Improved elastic recovery after compression.

- Better retention of sealing performance in elastomer applications.

This makes Omyaprene 50 C particularly attractive for seals, profiles, and technical rubber goods.

Omyaprene 50 C generally maintains or slightly decrease hardness compared to conventional calcium carbonate fillers, allowing formulators to reduce carbon black while keeping hardness within specification. 

No major influence on curing behavior has been observed.

Extensive rheometer testing showed:

- Comparable scorch safety

- Similar curing times

- Similar maximum torque values

In most validated formulations, no process modifications were required during vulcanization. 

Yes, many solutions—including bio-based additives, mineral fillers, and lightweight systems—help reduce environmental impact, improve recyclability, and lower material consumption.

Yes. A six-month stability evaluation showed consistent compound performance after storage. Mechanical properties and processing characteristics remained stable throughout the monitoring period. Based on current evaluations, the product has a recommended shelf life of six months under appropriate storage conditions. 

Current evaluations suggest caution in highly abrasive applications where maximum reinforcement from conventional high-loading carbon black systems may still be required.

Final suitability should always be verified through application-specific testing. 

The product has undergone extensive internal benchmarking and customer evaluations. Project communications reference successful testing with multiple rubber processors and validation partners, together with industrial-scale production trials.