REACTIVE POLYESTER RESIN BASED ON A HYDROXYLATED AND/OR EPOXIDIZED FATTY ACID TRIGLYCERIDE POLYOL FOR COATINGS WITH HIGH SOLIDS CONTENT

The invention relates to a hydroxylated and/or carboxylated polyester resin, which comprises in the structure thereof ester units formed from a polyol component a) comprising at least one polyol a1) chosen from hydroxylated and/or epoxidized fatty acid triglycerides of general formula (I): R-CO2-(H)C-(CH2-CO2-R)2 (I) with R being the radical of a residue, without carboxyl group, of a hydroxylated and/or epoxidized fatty acid RCO2H with R comprising 13 to 21 carbon atoms and at least one hydroxy and/or epoxy group. The invention also relates to a crosslinkable coating composition in an organic solvent medium comprising said resin as the coating which results from this use. 本发明涉及羟基化和/或羧基化的聚酯树脂，其在其结构中包含由多元醇组分a)形成的酯单元，所述多元醇组分a)包含选自通式(I)：R-CO2-(H)C-(CH2-CO2-R)2(I)的羟基化和/或环氧化的脂肪酸甘油三酯的至少一种多元醇a1)，其中R为羟基化和/或环氧化的脂肪酸RCO2H(其中R包含13-21个碳原子以及至少一个羟基和/或环氧基)的不含羧基的残基自由基。本发明还涉及在有机溶剂介质中包含所述树脂的能够交联的涂料组合物、正如由其使用得到的涂料。