Opening of the worldwide first hockey field made with CO2 in Krefeld, Germany: Niklas Wellen (national player), Hans-Werner Sartory (referee), Dr. Daniel Koch (Covestro), Luis Beckmann (goal keeper), Robert Haake (sports club CHTC), Daniel Klomp (Sport Group) and Oskar Deecke (national player).
Shining in blue: the worldwide first hockey field made with CO2 in Krefeld, Germany

Carbon dioxide for the production of sports floorings

Premiere for new product at hockey field in Germany

FOR the first time, synthetic sports floorings can be produced with carbon dioxide – which means less crude oil is needed as a raw material. The world’s first subfloor of this kind has now been opened in the hockey facility of a renowned sports club in Krefeld in western Germany.

The particularly sustainable new material comes from the materials manufacturer Covestro, which has developed a groundbreaking process for CO2 use to market maturity. This can save up to one-fifth of crude oil in production – an innovative contribution to resource preservation and recycling management.

The CO2 for the subfloor is contained in a binder – or more precisely, in one of its components, a so-called polyol. So far, the new CO2-based material called Cardyon® has been used to produce soft polyurethane foam for mattresses and upholstered furniture, which is already being marketed. The further development for use in sports is now the next step in the expansion of the range of applications.

“The use of carbon dioxide as a new raw material is a promising approach for making production in the chemical and plastics industries more sustainable,” explains Dr Markus Steilemann, CEO of Covestro. “This way, we use CO2 in a closed-loop process and save oil. On this basis, we want to offer a comprehensive product portfolio for as many areas of application as possible – in line with our vision of making the world a brighter place.”

First customer
The first customer for the new binder produced with CO2 is the globally active sports flooring producer Polytan. The company from Burgheim, Bavaria, which belongs to the Sport Group, uses the material to produce elastic underfloors together with rubber granulate.

“We attach great importance to using sustainable raw materials and are always on the lookout for ecologically more sensible alternatives to conventional products. Ideally, even the quality of the product can be improved. Covestro guarantees exactly that with cardyon”, says sport group purchasing manager Daniel Klomp.

The first CO2-based floor is now in use at the Crefelder Hockey and Tennis Club. The traditional club maintains one of the leading field hockey facilities in Germany which repeatedly serves as a venue for international matches and championships. The subfloor was laid on a 99×59-metre playing field and serves to cushion the effect of a new, bright blue artificial turf, also from Polytan.

The use of CO2 as a raw material for plastics is made possible by a particularly environmentally friendly technology that Covestro has developed together with its partners. CO2 is used as a supplier of the important element carbon – instead of petroleum-based raw materials. Up to 20% of traditional fossil raw materials can thus be replaced by carbon dioxide. Covestro produces the new CO2-based polyols at its Dormagen site near Cologne. The carbon dioxide comes from a neighbouring chemical company, which produces it as a by-product.