Ductile expanded polyesters having high impact resistance
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United States of America Patent
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Jun 23, 2015
Grant Date -
Nov 10, 2011
app pub date -
May 9, 2011
filing date -
May 7, 2010
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Abstract
This invention relates to expanded polyester materials comprised of polyester/acrylic elastomer blend having an improved ductility and impact resistance, while the compression strength, shear strength/modulus of polyesters remain almost unchanged or unworsened. Addition of a non-reactive/reactive acrylic mixture serving as the blend partner improves the melt strength in an expanding process and leads to a better impact resistance of expanded aromatic polyester materials. All expanded polyester materials are produced with help of a reactive process.
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