The Challenge

High-performance rubber applications, such as O-rings, diaphragms, gaskets, demand compounds with outstanding chemical resistance, dimensional stability, and longevity. Many of these applications have traditionally relied on fluorinated rubbers (FKM) due to their superior swelling and aging resistance. However, with increasing regulatory and cost pressures related to fluorinated materials and the need for more sustainable rubber solutions, formulators and manufacturers are urgently seeking viable alternatives- without compromising on performance.

The Solution

Kisuma’s DHT™-4, an advanced synthetic hydrotalcite-like additive, has been shown to significantly improve both the swelling resistance and aging properties of rubber compounds. Serving as a highly effective acid scavenger, DHT™-4 neutralizes residual acids in rubber, enhancing hydrolytic stability and minimizing compound degradation over time. These properties are critical in applications where rubber must withstand aggressive environments.

A collaborative effort with ZEON, a globally respected leader in synthetic rubber solutions renowned for technical innovation and specialty elastomers, provided the parts and expertise to demonstrate DHT™-4’s advantages in real-world rubber formulations. ZEON tested DHT™-4 as a drop-in replacement for traditional stabilizers in various rubber grades, confirming improved aging profiles and reduced swelling- two factors crucial in enhancing rubber durability. ZEON’s deep experience in automotive, oil & gas, industrial, and high-performance consumer markets further validates the reliability and practical potential of these new DHT™-4-compounded parts.

The Applications

DHT™-4’s benefits extend across a wide range of rubber components, including O-rings, diaphragms, standard and bonded gaskets. Its non-migratory nature, strong acid scavenging, and proven ability to boost swelling and aging resistance make it particularly effective wherever elastomer reliability is a priority.

The Outcome

Through collaboration with ZEON, DHT™-4 has demonstrated significant improvements in the aging resistance and swelling behavior of various rubber matrices. Its strong and non-migratory acid scavenging action enhances rubber durability and stability under demanding conditions, supporting performance advancements across a wide range of applications.

By improving the long-term reliability of rubber compounds, Kisuma’s DHT™-4 empowers the rubber industry to develop higher-quality, more durable products that meet evolving regulatory and environmental expectations.

For more information about ZEON please see here:
https://www.zeonchemicals.com
https://www.zeon.eu