To curb air pollution in China's capital, the Beijing Municipal Bureau of Environmental Protection has adopted a policy paper that provides for the two-stage reduction of emission levels for maintaining and repairing wind turbines and other structures. In line with this regulation, the threshold values valid up to the end of 2016 will be tightened again starting in 2017.
BASF focuses on energy-efficient and resource-conserving formulations for both manufacturing and application of its products. Coating solutions for wind turbines developed and sold under the RELEST brand feature high abrasion resistance and elasticity and thus offer long-lasting protection from extreme weathering impacts. Rotor blade surfaces in particular have to withstand extreme stresses such as wind, hail and rain. For this purpose, BASF has developed a special coating system consisting of gelcoat, putty, edge protection and topcoat. The consistently used two-component polyurethane compounds offer an especially ecological alternative to solventborne products and thus comply with the current VOC guidelines, including the tightened threshold values for use in Beijing.