NORMAL-PRESSURE CATION-DYEABLE POLYESTER, TEXTILE PRODUCT MADE FROM THE SAME, AND PRODUCTION METHOD FOR THE SAME
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United States of America Patent
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Issued Date -
May 21, 2009
app pub date -
Mar 2, 2006
filing date -
Mar 7, 2005
priority date (Note) -
Abandoned
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Abstract
A normal-pressure cation-dyeable polyester is provided which contains an isophthalic acid component having a metal sulfonate group in a predetermined proportion based on the total of acid components present in the polyester, and contains a polyalkylene glycol having an average molecular weight of 150 to 600 in a predetermined proportion based on the polyester, wherein the proportion of diethylene glycol based on the total of glycol components and a terminal carboxyl group concentration are each set within a predetermined range. The polyester is stable in quality and excellent in dark- and pale-color light fastness when used for textile products.
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