30 scientists from China, Germany, Japan and the UK and representatives from the chemical societies and research funders from these countries discussed how chemistry can help to enable sustainable plastics. Keynote and position talks triggered the discussion in four thematic sessions: new plastics, recyclability of plastics, degradation of plastics, and measuring the impact of plastics. In a summarizing session recommendation for scientists, research funders, policymakers and society were developed and these are now available together with the results from the thematic sessions in this whitepaper.