Struktol TR 451 enables high-filler polyolefin compounds with untreated minerals

Stow, OH – Struktol Company of America, LLC, highlights its TR 451, a processing additive specifically designed for use in highly loaded mineral filled polyolefins. Engineered as an optimized blend of special oleo chemicals, TR 451 helps compounders meet demanding performance and cost targets in high-filler systems by improving homogenization and processing efficiency.

TR 451 is uniquely formulated to enable the effective use of untreated minerals while maintaining the processing and physical property characteristics typically associated with treated minerals. By allowing processors to reduce or eliminate more expensive treated mineral grades, the additive supports lower raw material costs and a simplified supply chain, while still preserving the easy flow and good processability required to keep cycle times and energy usage under control. Even when using untreated fillers, TR 451 helps retain key mechanical properties such as strength and durability so that critical performance targets can continue to be met.

In many formulations, TR 451 can do more than simply maintain performance versus treated mineral systems; it can improve processing and physical characteristics as well. Processors can benefit from smoother processing and potentially higher throughput, contributing to more efficient compounding and molding operations. At the same time, the opportunity to enhance overall performance properties supports higher-quality finished parts, giving manufacturers additional latitude to fine-tune the balance between cost, speed, and part performance.

A key advantage of TR 451 is its ability to allow increased filler loadings without sacrificing processability, stability, or physical properties. The additive enables higher mineral loadings while keeping melt flow and handling manageable, even at elevated filler levels, helping processors avoid excessive torque, pressure, or equipment strain. TR 451 supports consistent stability at these higher filler loadings, reducing variability and scrap and helping maintain reliable product performance over time. By helping prevent the typical loss of mechanical properties that often accompanies high mineral loadings, TR 451 also makes more aggressive cost-reduction formulations possible, while still meeting application requirements for density, rigidity, and durability.

TR 451’s optimized blend of special oleo chemicals is designed for compatibility and efficiency in polyolefin systems, ensuring that the additive integrates easily into existing formulations. Its low recommended dosage level of 0.2–2% of the total compound allows processors to achieve performance improvements with minimal formulation adjustments, keeping additive cost per compound low and preserving flexibility for other ingredients. This efficient use level makes TR 451 an attractive option for compounders focused on production economics.

For ease of handling in plant environments, TR 451 is supplied as tan pastilles, providing straightforward feeding, dosing, and identification in typical compounding equipment. The product offers good storage stability of at least two years under normal conditions, simplifying inventory management and helping reduce waste from expired stock. TR 451 is available in multiple packaging sizes, including 55 lb. bags with 2,200 lb. skids and 25 kg bags with 1,000 kg skids, allowing processors of different scales to integrate the additive seamlessly into existing material handling and logistics systems.

With TR 451, Struktol Company of America continues its commitment to delivering specialized additive solutions that help compounders optimize highly loaded mineral filled polyolefin compounds for cost-efficiency, processing reliability, and consistent product quality