Patent ID: 7026393

Claim:
A polyurethane powder coating material, comprising: A) 3–25% by weight of polyurea; B) 35–75% by weight of at least one amorphous and/or (semi)crystalline polyester synthesized from at least one polyol and at least one polycarboxylic acid, of which one is succinic acid or its anhydride, and/or their ester(s) and/or anhydride(s) having an OH number of 5–250 mg KOH/g and a melting point ranging from 50 to 130° C.; C) 5–30% by weight of at least one curing agent based on blocked polyisocyanate(s), blocked isocyanurate(s) and/or uretdiones having a functionality of at least 2; D) 0.5–50% by weight of at least one auxiliary(ies) and/or additive(s); the fraction of succinic acid or its anhydride in component B) ranging from 1 to 14 mol % and there being from 0.5 to 1.2 NCO groups of component C) available per OH group of component B).