Schill+Seilacher collaborates with BASF on Koresin product family now enhanced with two new variants for advanced sustainability

Hamburg, Germany – BASF together with Schill+Seilacher “Struktol” took the opportunity of the Tire Technology 2023 conference and exhibition as a platform to introduce two new product variants representing significant contributions towards saving of finite fossil resources and reducing greenhouse gas emissions.
Koresin Ccycled® makes use of the ChemCycling® approach to achieve a 100% substitution of fossil origin feedstock with certified sustainably recycled raw materials from chemical recycling of plastic waste.
Koresin BMBcertTM results from a Biomass Balance approach that enables the substitution of 100% of fossil-based feedstock with a renewable equivalent to achieve a significant reduction of greenhouse gas emissions.
Both products are manufactured using a certified mass balance approach. For this, BASF substitutes the corresponding amount of fossil feedstock with alternative feedstock: recycled feedstock for the ChemCycling® approach or renewable feedstock for the biomass balance approach. The alternative feedstock is fed in at the beginning of the value chain and attributed to the final product by means of a certified mass balance method. Koresin Ccycled® and Koresin BMBcertTM are certified according to the REDcert² standard, which ensures the correct attribution of alternative feedstock in BASF’s value chain.
Each new Koresin product variant provides end users with important contributions to the circular economy by increasing the use of recycled raw materials or renewable resources. Koresin Ccycled and Koresin BMBcert are “drop-in” solutions: They are identical in quality and properties to standard Koresin, allowing customers to use them in their production without the need for adjustments to their existing processes.
With over 80 years of production, BASF’s Koresin is the industry benchmark with regard to superior tack performance, processing flexibility, reliability, high quality and uniformity. When added to the various rubber compounds during tire production, it creates a surface tackiness of the components – preventing the semi-finished products from shifting when they are joined together. The long-term tackiness also allows for a flexible storage time of rubber compounds. Koresin is applied in the manufacturing of quality and premium tires in OEM, replacement and re-treading as well as industrial and technical rubber goods worldwide.

Both companies eagerly anticipate their important roles in working together to bring these new advantages and their contribution towards advanced sustainability throughout the global rubber industry.