PROCESS FOR PRODUCING A LIQUID MIXTURE OF TEREPHTHALIC ACID WITH ALKYLENE GLYCOL
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United States of America Patent
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Issued Date -
Nov 25, 2010
app pub date -
Nov 6, 2007
filing date -
Nov 7, 2006
priority date (Note) -
Abandoned
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Abstract
A liquid mixture of terephthalic acid with an alkylene glycol suitable as a starting material mixture for a polyester polycondensation reaction is produced by preparing a liquid mixture of terephthalic acid particles prepared by the hydrolysis of a dialkyl terephthalate with at least one type of alkylene glycol and having a temperature of 100 to 130° C., and then stirring the liquid mixture for 15 minutes to 3 hours while the temperature of the liquid mixture is maintained in the above-mentioned range, to control the slurry properties of the liquid mixture.
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