Novel malonate-functional polyesters from biobased and potentially biobased monomers were developed and cured through the base-catalyzed carbon-Michael addition reaction with acryloyl-functional oligomers. Both drop-in monomers, such as fully biobased diethyl malonate, and alternative raw materials, such as isosorbide and vegetable oil, were introduced. Isosorbide-based polyesters show improved performance to humidity in terms of adhesion on epoxy-amine primer, while vegetable oil-containing resins lead to improved coating appearance due to better flow and levelling. This study demonstrates that biobased malonate resins, having renewable contents up to 53%, offer attractive performance benefits in 2K RMA paints. It is anticipated that, with the development of additional fully biobased polyols, renewable contents in excess of 80% can be achieved.

通过与丙烯酰基官能低聚物的碱催化的碳-迈克尔加成反应，开发并固化了来自生物基单体和潜在生物基单体的新型丙二酸酯官能聚酯。引入了两种直接引入的单体（例如完全基于生物的丙二酸二乙酯）和替代原料（例如异山梨醇和植物油）。基于异山梨醇的聚酯在环氧胺底漆上的粘合性表现出对湿度的改进性能，而由于更好的流动性和流平性，含植物油的树脂可改善涂层外观。这项研究表明，可再生含量高达53％的生物基丙二酸酯树脂在2K RMA涂料中具有吸引人的性能优势。可以预期，通过开发其他完全基于生物的多元醇，可再生成分的含量可以达到80％以上。