The present invention relates to coatings, particularly high performance coatings, containing a polyester polyol comprising recurring units derived from a polyacid source, poly(bisphenol-A carbonate) (PBAC), and a glycol. The PBAC is preferably recycled poly(bisphenol-A carbonate) (rPBAC). These coatings provide improved salt spray and stain resistance along with a variety of other coating performance attributes. The polyols can contain a significant recycle and biobased content, making them sustainable alternatives to petroleum based polyols.
本发明涉及一种涂料,特别是高性能涂料,它含有一种聚酯多元醇,该聚酯多元醇包含从聚酸源、聚(双
酚-A
碳酸酯)(P
BAC)和
乙二醇中提取的递归单元。P
BAC 最好是再生聚(双
酚 A
碳酸酯)(rP
BAC)。这些涂料具有更好的耐盐雾性和防污性,以及其他各种涂料性能属性。多元醇可含有大量回收和
生物基成分,使其成为石油基多元醇的可持续替代品。