HSR High Styrene Rubber

High styrene rubbers and resins from Synthos. HSR is used for manufacturing floor linings, cables, toys, footwear or as a filler alternative in rubber compounds for other industrial applications.

Synthos high styrene rubbers and resins are used where manufacturers require cost-effective processing solutions for products that require high levels of rigidity and hardness.

We offer three products under the KER® brand:

KER® 9000/9001 high styrene resins are produced from styrene and butadiene using emulsion copolymerization. The product is then coagulated with aluminum sulfate and stabilized with a non-staining antioxidant. KER® 9000 is supplied as pellets and KER® 9000 as a powdered form. KER® 1904 is a standard grade of high styrene rubber. It is produced by mixing butadiene-styrene latex with high styrene resin, coagulated using a synthetic coagulant and stabilized with a non-staining antioxidant.

All KER® HSR products are also available as bio/circular-attributed high styrene rubber under ISCC Plus certification.

Commercial Grades

Type Antioxidant Bound styrene (%)
KER® 1904 Non-staining 68
KER® 9000 Non-staining 82
KER® 9001 Non-staining 82

Technical and safety data sheets (TDS and SDS) are available on request, following the completion of the contact form.


Reach out to us to learn more about our solutions.

Write to us