Polyester composition comprising silica particles and use thereof for making packaging articles
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United States of America Patent
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Sep 1, 2015
Grant Date -
Sep 3, 2009
app pub date -
May 16, 2006
filing date -
May 24, 2005
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Abstract
The polymeric composition comprising (A) a polyester resin and (B) micrometrical silica particles, preferably particles made of cristobalite or quartz, dispersed in the polyester resin preferably at concentration of at least 2 wt %. The polyester resin preferably comprises a PET homo or copolymer. Packaging articles, especially biaxially stretched blow molded containers, made with the said polymeric composition exhibit high opacity to UV and visible light radiations as well as improved barrier properties to O2 and to water vapor, and improved thermal and mechanical properties.
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