| 摘要 |
PURPOSE:To provide the titled composition for automobile, etc., having excellent chipping resistance, capable of giving a high-solid composition, and composed of a lactonized modified polyester resin containing a polybasic acid exhibiting a specific half-equivalent potential by non-aqueous potentiometric titration in the state integrated in the resin. CONSTITUTION:The objective composition is produced by using a modified polyester resin produced by modifying (A) a polyester resin wherein 10-100mol% of the carboxyl group exhibiting the acid value of the resin is a polybasic acid (e.g. phthalic anhydride) having a half-equivalent potential of >=-300mV by non-aqueous potentiometry in a state integrated in the resin with (B) 5-50wt% (based on the solid content of the resin) lactone of formula (n is 4-10) (epsilon-caprolactone). EFFECT:Excellent NOX adhesivity and over-bake adhesivity.
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