| 摘要 |
The present invention is a compositional blend having a polyester, an acetaldehyde reduction compound and less than 50 ppm of an optical brightener. The blend has utility for food and beverage molded containers where improved clarity and flavor retention are important without producing a haze. The acetaldehyde reduction compound can be a low molecular weight partially aromatic polyamide, a low molecular weight aliphatic polyamides or polyesteramide. The optical brightener preferably is a bis(benzoxazolyl) stilbene. Articles, and especially beverage containers, produced from the blend have a yellowness, b*, less than about 2.5.
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