Method for producing a copolymerized polyester resin
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United States of America Patent
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May 29, 2001
Grant Date -
Jun 14, 2001
app pub date -
Feb 22, 2000
filing date -
Feb 23, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A method for producing a copolymerized polyester resin, which comprises subjecting a dicarboxylic acid component containing terephthalic acid or its ester derivative as the main component and a phenylene dioxydiacetic acid as a copolymerizable component, and a diol component containing ethylene glycol as the main component, to polycondensation through an esterification reaction or a transesterification reaction, wherein the phenylene dioxydiacetic acid is added to the reaction system in the form of a solution dissolved in the diol component.
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