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; and
an isosorbide-derived structural unit,wherein the polyester resin comprises 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 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.
3 Citations
12 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; and an isosorbide-derived structural unit, wherein the polyester resin comprises 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 relative to 1 mol of the polycarboxylic acid-derived structural unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12)
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8. A method for manufacturing a polyester resin, comprising:
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polycondensing a polycarboxylic acid component and a polyhydric alcohol component, wherein the polyhydric alcohol component comprises 0.05 to 0.5 mol of isosorbide and 0.015 to 0.4 mol of a trihydric or higher alcohol relative to 1 mol of the polycarboxylic acid component.
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Specification