Ethylene-vinyl alcohol copolymer composition and multilayer structure using the same
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United States of America Patent
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Apr 6, 2010
Grant Date -
Aug 23, 2007
app pub date -
Mar 27, 2007
filing date -
Sep 28, 2004
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Abstract
An ethylene-vinyl alcohol copolymer composition excellent in neck-in reduction, stretching properties and further, gas barrier properties and a multilayer structure using the same, are disclosed. The ethylene-vinyl alcohol copolymer composition of the present invention is the blend of two or more ethylene-vinyl alcohol copolymers and at least one of the copolymers has the following structural unit (1).represents independently any substituent and n represents 0 or 1). Preferably, the ethylene-vinyl alcohol copolymer having the structural unit (1) is obtained by hydrolyzing of a copolymer of 3,4-diacyloxy-1-butene, a vinyl ester monomer and ethylene.
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