Maleic resins are Diels-Alder adducts of colophony with maleic or fumaric acid, which additionally can be esterified with polyvalent alcohols partly or completely.
Thus a very wide range of hard resins with variable melting ranges, functionalities and therefore conditioned solubilities can be produced.
This brings a multiplicity of applications like water based and solvent lacquers, flexo and packaging priniting inks, alkyd lacquers, inks, adhesives and pigment coating.
Hydroxy functional modifications can also be applied in 2K-PUR systems, while especially aliphatic tolerant types are used for Offset Inks.
Erkamar resins show excellent wetting and adhesion properties as well as high gloss.