Epoxysilane oligomer for protective coatings

摘要

A new class of functional epoxysilanes has been introduced with great potential for a variety of applications in the coatings industry. These compounds are based on an oligomeric structure of an epoxysilane. The poly (epoxysiloxane) typically possesses lower alkoxy content and greater epoxy functionalization as compared to standard monomeric silanes. In testing, these features significantly reduced the VOC contribution of the material and improved the crosslinking efficiency within the resin matrix, respectively. Given that the material is 100% active as well, lower loadings are necessary for equivalent actives content and the material can be added neat or as a hydrolyzate to a waterborne formulation. The representative ESO, CoatOSil MP 200 silane, demonstrated improved hydrogen gassing results as an additive in a metal rich coating and primer formulation, and improved stain resistance as an additive in a waterborne acrylic latex decorative paint formulation. These epoxysilane oligomers may be considered as a new technology platform to potentially overcome some of the challenges of the industry toward better quality products, higher cost effectiveness, and, equally or perhaps more importantly, products with lower impact on the environment.