Polyester resin, method for manufacturing polyester resin, and coating composition containing polyester resin
First Claim
1. A polyester resin, comprising:
- a polycarboxylic acid-derived structural unit;
a trihydric or higher alcohol-derived structural unit;
an isosorbide-derived structural unit; and
a structural unit derived from a dihydric alcohol that is other than isosorbide and having an alicyclic skeleton,wherein 0.05 to 0.5 mol of the isosorbide-derived structural unit and 0.015 to 0.4 mol of the trihydric or higher alcohol-derived structural unit are present relative to 1 mol of the polycarboxylic acid-derived structural unit, andwhere the structural unit derived from the dihydric alcohol having an alicyclic skeleton is present at 0.001 to 0.15 mol relative to 1 mol of the polycarboxylic acid-derived structural unit.
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Accused Products
Abstract
The present invention relates to a polyester resin with excellent solubility in generic solvents, especially with excellent solubility at a temperature of 0° C. or lower. According to the present invention, by using the polyester resin with excellent solubility in generic solvents, solubility at a lower temperature, especially the solubility at a temperature of 0° C. or lower, is enhanced, making it easier to prepare paints, coatings and the like. The polyester resin related to the present invention contains 0.05 to 0.5 mol of an isosorbide-derived structural unit and 0.015 to 0.4 mol of a trihydric or higher alcohol-derived structural unit relative to 1 mol of a polycarboxylic acid-derived structural unit.
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Citations
10 Claims
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1. A polyester resin, comprising:
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a polycarboxylic acid-derived structural unit; a trihydric or higher alcohol-derived structural unit; an isosorbide-derived structural unit; and a structural unit derived from a dihydric alcohol that is other than isosorbide and having an alicyclic skeleton, wherein 0.05 to 0.5 mol of the isosorbide-derived structural unit and 0.015 to 0.4 mol of the trihydric or higher alcohol-derived structural unit are present relative to 1 mol of the polycarboxylic acid-derived structural unit, and where the structural unit derived from the dihydric alcohol having an alicyclic skeleton is present at 0.001 to 0.15 mol relative to 1 mol of the polycarboxylic acid-derived structural unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification