described are methacrylate or acrylate binders e . g . obtainable by the steps of generating oh - precursors from at least one aromatic polyester , and reacting said oh - precursors of step with methacrylic acid and / or acrylic acid to form a respective ester , whereby step comprises reacting an aromatic polyester , or a mixture of aromatic polyesters with at least one polyol and / or at least one aminopolyol to generate hydroxy terminated oligomers . optionally , a modified product can be obtained by performing a further reaction in step , namely by reacting said hydroxy terminated oligomer with at least one polycarboxylic acid and / or at least one polycarboxylic anhydride to generate said hydroxy terminated binder precursor oligomer .