Saponified ethylene-vinyl acetate copolymer resin composition and laminate having a layer of said resin composition

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United States of America Patent

PATENT NO 6232382
SERIAL NO

09164566

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Abstract

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The saponified ethylene-vinyl acetate copolymer (EVOH) resin composition of the present invention is a composition comprising a saponified ethylene-vinyl acetate copolymer (EVOH) (A) having an ethylene content of 20-60 mole percent and a saponification degree of not less than 90 mole percent, magnesium acetate or/and calcium acetate (B) as an essential component and at least one of acetic acid (C), a boron compound (D) and sodium acetate (E) as an optional component, and is characterized in that the contents of the respective components in said composition, relative to 100 parts by weight of EVOH (A), are as follows: magnesium acetate or/and calcium acetate (B) 0.001-0.02 part by weight on the metal basis; acetic acid (C) 0-0.05 part by weight; the boron compound (D) 0-1 part by weight on the boron basis; and sodium acetate (E) 0-0.1 part by weight on the metal basis; and that the weight loss when said composition is maintained at a temperature (T+70).degree. C. higher by 70 .degree. C. than the melting point T.degree. C. of said EVOH (A) for 1 hour is not more than 10% by weight. The laminate of the present invention is characterized in that a layer of a thermoplastic resin is disposed at least one side of a layer consisting of the EVOH resin composition mentioned above.

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Patent Owner(s)

  • NIPPON GOHSEI KAGAKU KOGYO KABUSHIKI KAISHA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kita, Koji Ibaraki, JP 80 676
Kunieda, Makoto Kurashiki, JP 9 86
Ninomiya, Kenji Ibaraki, JP 30 148

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