| 摘要 |
<p>To provide a heat-hardenable paint composition with which paint films which have excellent scratch resistance, acid resistance and durability and which also have excellent staining resistance can be formed and which can be used ideally as automobile top-coat paints . [Means of Resolution] A heat-hardenable paint composition of which the base resin comprises (A) a hydroxyl group containing lactone modified resin of which the hydroxyl group value is from 50 to 400 mgKOH/g and which contains from 20 to 70 mass% of structural units based on a lactone compound and (B) a hydroxyl group and cyclic structure containing acrylic resin of which the hydroxyl group value is from 50 to 150 mgKOH/g and which contains from 10 to 80 mass% of structural units based on a radically polymerizable monomer which has a cyclic structure, and in which the crosslinking resin is an isocyanate compound, in which the mass ratio of the resin solid fractions (A) / (B) is from 95/5 to 20/80.</p> |
