Since paints largely consist of water and mineral raw materials, the focus of the research was primarily on the carbon-based constituents. In particular the use of dispersion agents based on mineral oil was thoroughly examined under this aspect, since mineral oil is not a renewable raw material. If paints are to be sustainable, then an important factor is the substitution of petrochemical base materials. "The conservation of limited resources is an important aspect of a structural change within the building paints industry towards a bio-economy for which Caparol, as the forerunner, is engaging with new products," says Hoffmann.
In co-operation with a renowned German chemical company it has been possible to replace the mineral-oil based binders by renewable biogenic materials. Here, mainly plant oils, waste fats and biogas are used. For example, bio-naphtha is produced from organic residual materials and plant oils and biogas from kitchen waste. During the production of plant oils, attention is paid to make sure that they originate from sustainable sources which are certified according to international sustainability criteria, such as the International Sustainability & Carbon Certification (ISCC). They ensure a measurable reduction in greenhouse gases, sustainable use of acreage in the cultivation of oil-producing plants and the protection of natural habitats as well as social sustainability components which ensure a profitable livelihood for the plant producers. With the new CapaGeo products Caparol is making an important step towards realising the aspiration of harmonising paints with nature. The concept does not depend on niche products, but rather on key performers in the product range, such as interior paints currently on the market.