HIGH DENSITY POLYESTER RESIN, PREPARATION THEREOF AND POWDER PAINT COMPOSITION COMPRISING THE SAME

摘要

PURPOSE: Provided is a high density polyester resin, from which a powder paint having excellent weather resistance, anti-fouling property, leveling property and mechanical properties can be obtained. CONSTITUTION: The high density polyester resin can be produced by the method comprising the steps of: (1) forming carboxy polyester from the mixture consisting of an alicyclic polyhydric acid, an aliphatic polyhydric acid, a difunctional glycol and trifunctional or higher glycol; (2) forming hydroxy polyester from the mixture consisting of an alicyclic polyhydric acid, an aliphatic polyhydric acid, a difunctional glycol and trifunctional or higher glycol; and (3) reacting the carboxy polyester with the hydroxy ester to obtain the high density polyester resin.