Abstract: The invention is directed to a thermosetting powder paint composition comprising a thermosetting amorphous polyamide. The amorphous polyamide has a glass transition temperature between 20° C. and 200° C. The polyamide may be a carboxyl-, a hydroxyl- or an amine functional polyamide. A carboxyl functional polyamide has an acid number between 10 and 150 mg of KOH/gram of resin. The invention also relates to a thermosetting powder paint composition comprising a thermosetting amorphous polyamide and an additive comprising a copper halogenide and another halogenide. The invention further relates to a process for coating a substrate at low temperature cure (LTC) conditions and a composition suitable for LTC.

Abstract: The invention is directed to a heat curable powder coating composition comprising a polymer comprising functional groups capable of reacting with a ?-hydroxyalkylamide unit, a crosslinker comprising ?-hydroxyalkylamide units, a first additive comprising a transition-metal cation and a second additive comprising an halogenide anion selected from a iodide or a bromide anion or a combination thereof wherein the halogenide anion is present in a molar excess relative to the transition-metal cation. Under elevated heat conditions a coating obtained from such a composition shows less yellowing. The invention also relates to a process for manufacturing a coated substrate, to a coated substrate and to the use of the first and second additive. The invention further relates to a crosslinker composition and to a polymer composition.

Abstract: The invention is directed to a thermosetting powder paint composition comprising a thermosetting amorphous polyamide. The amorphous polyamide has a glass transition temperature between 20° C. and 200° C. The polyamide may be a carboxyl-, a hydroxyl- or an amine functional polyamide. A carboxyl functional polyamide has an acid number between 10 and 150 mg of KOH/gram of resin. The invention also relates to a thermosetting powder paint composition comprising a thermosetting amorphous polyamide and an additive comprising a copper halogenide and another halogenide. The invention further relates to a process for coating a substrate at low temperature cure (LTC) conditions and a composition suitable for LTC.