Hydroquinone-containing polyesters having improved whiteness
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United States of America Patent
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Issued Date -
Sep 1, 2011
app pub date -
Oct 30, 2009
filing date -
Oct 30, 2008
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Abandoned
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Abstract
A polyester containing polymerized units of hydroquinone; 4,4′-biphenol; and hydroxybenzoic acid; terephthalic acid and optionally isophthalic acid. A method of forming a polyester including first acylating a mixture of hydroquinone; 4,4′-biphenol; terephthalic acid and optionally isophthalic acid; and hydroxybenzoic acid; and then polycondensing the resulting acylated mixture. The polyester is suitable for uses such as lighting where high whiteness, high reflectivity and high heat resistance are desirable.
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