White porous polyester film and preparation method thereof
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United States of America Patent
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Apr 7, 2015
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Feb 24, 2011
app pub date -
Aug 17, 2010
filing date -
Aug 20, 2009
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Abstract
A white porous polyester film of the present invention comprising a polyester-based monopolymer/copolymer blend, a crystalline polymer resin which is not miscible with a polyester and has a heat deformation temperature of 90° C. or higher, inorganic particles, a whitening agent, and a stabilizing agent has improved optical properties, and thus is useful as a film for use in printing, labeling, electronics, and display applications.
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