| abstract |
A coating composition comprising; (a) a first polyester material having a number average molecular weight (Mn) of 500 to 5500 Daltons, and a glass transition temperature (Tg) of 40 to 120 °C, and (b) a second polyester material having a number average molecular weight (Mn) of from 6,000 to 100,000 Daltons, wherein the number average molecular weight (Mn) is determined in accordance with ASTM D6579-11 and the glass transition temperature (Tg) is measured from according to ASTM D6604-00 (2013) (Differential Heat Flow Scanning Calorimetry (DSC), Sample Pans: Aluminum, Reference: Blank, Calibration: Indium and Mercury, Sample Weight: 10 g, Heating Rate: 20°C/min). |