| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin for polyester-based powder coating highly adhesive to to-be-coated objects and containing no heavy metals in consideration of environmental pollution, and to provide such a polyester-based powder coating using the resin. SOLUTION: The resin for polyester-based powder coating is made mainly from an aromatic dicarboxylic acid and a glycol. The resin has a hydroxyl number of 17-65 mgKOH/g. This resin is characterized in containing 100-400 ppm of a magnesium compound coated with titanic acid-based coating layer. A method for producing the above resin is provided, comprising using the above-mentioned magnesium compound as polymerization catalyst and incorporating the magnesium compound at 100-400 ppm based on the final resin. The polyester-based powder coating containing the above resin is also provided. COPYRIGHT: (C)2007,JPO&INPIT
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