Polyester resin
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United States of America Patent
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Dec 26, 2017
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app pub date -
Dec 17, 2014
filing date -
Dec 19, 2013
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Abstract
The present invention provides a polyester resin which is excellent in long-term thermal stability and moldability, comprises a dicarboxylic acid component and a glycol component, wherein 10 mol % or more of a furandicarhoxylic acid is contained as the dicarboxylic acid component and the polyester resin satisfies following requirements (1) to (3);
- (1) a total metal element content is 150 ppm or less relative to the mass of the polyester resin;(2) a phosphorus element content is 100 ppm or less relative to the mass of the polyester resin; and(3) TODΔ reduced viscosity represented by the following formula is 0.030 dl/g or less;(TODΔ reduced viscosity)=(reduced viscosity before thermal oxidation test)−(reduced viscosity after thermal oxidation test).
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