Patent ID: 10851202

Abstract:
The present invention concerns polyester resins of General Formula I (HO—[R1R2C(CH2—)]a[—OCOCxHyCO2—]b[—CpHzO—]c—H) or General Formula II (HO—[R1R2C(CH2—)2]a[—OCOCxHyCO2—]b[—CH2CR3(CO2H)CH2O]d—H), wherein R1, R2, a, b, c, d, x, y, p, and z are as defined herein, for use in inks and coating compositions. The polyester resins of the present invention are particularly, but not exclusively, suitable to enhance the adhesion between a printing ink or coating composition and a substrate, especially a plastic substrate, to which it is applied. The polyester adhesion promoters of the invention are compatible with urethane-based inks and coating compositions.