| abstract |
A powder coating composition comprising: (a) a compound having at least two epoxy groups in the molecule; (b) a compound having at least two carboxyl groups in the molecule; and (c) a compound of the formula: <IMAGE> wherein m and n are each an integer of 1-105 provided that m</=n; R1 is a residue of a mono or polybasic carboxylic acid; R2, R3, R4 and R5 are, the same or different, each an unsubstituted or substituted C1-30 alkyl, C6-10 cycloalkylalkyl, C5-8 cycloalkyl, C6-20 aryl or C7-30 aralkyl or at least two of them many form together with nitrogen atom a saturated or unsaturated heterocyclic group, said composition being able to be thermoset at low temperature and form a paint film having excellent surface smoothness without browning of the film. |