ChemCologne Kooperationstag is an annual event aimed at promoting links between the chemical industry and start-ups. Always held at a higher education institution in the region, it gives young start-up teams a platform through which to present their innovative business models to Rhineland chemical companies and to establish valuable contacts. Chemical businesses explain the different approaches they use to find solutions to the challenges facing them, how they collaborate with start-ups and which of the ideas presented they think could be successful.