An Acrylic Polyester Resin and An Aqueous Coating Compositon Containing the Same

There is described an acrylic polyester resin, obtainable by grafting an acrylic polymer with a polyester material. The polyester material is obtainable by polymerizing (i) a polyacid component, with (ii) a polyol component, including a diol according to formula (I), as shown in claim 1; wherein R?1#191 and R?2#191 each independently represent a hydrogen radical, a lower alkyl radical or an aryl radical having 6 to 12 carbon atoms, and wherein at least one of R?1#191 or R?2#191 is a lower alkyl radical or an aryl radical having 6 to 12 carbon atoms. R?3#191 and R?4#191 each independently represent a lower alkyl radical or an aryl radical having 6 to 12 carbon atoms. At least one of the polyacid component and/or the polyol component comprises a functional monomer operable to impart functionality on to the polyester resin, such that an acrylic polymer may be grafted with the polyester material via the use of said functionality. Also provided is an aqueous coating composition comprising the acrylic polyester resin and a metal packaging containing coated with the composition.