Kuraray Co., Ltd.

Yoshikazu Yamasaki

Yasuhiro Nonaka

Kazuyuki Somemiya

Yoshio Yamamoto

Provided by the present invention is an ethylene-vinyl alcohol copolymer resin composition having superior appearance characteristics (particularly decreased coloring and unevenness of the hue), and is accompanied by suppressed occurrence of yellowing, etc., in melt molding. An ethylene-vinyl alcohol copolymer resin composition containing an ethylene-vinyl alcohol copolymer (A) and a compound having an enediol structure (B), in which a molar ratio of the compound (B) to vinyl alcohol units of the ethylene-vinyl alcohol copolymer (A) is 2.70&#xd7;10or greater and 2.70&#xd7;10or less.

Ethylene-vinyl alcohol copolymer resin composition and method for producing same

An object of the present invention is to provide an EVOH-containing resin composition which has superior appearance characteristics and long-run workability in melt molding and enables occurrence of yellowing etc., in melt molding to be inhibited particularly, even in melt molding at high temperatures of, for example, no less than 260&#xb0; C. Further provided is a multilayered structure molded from the composition. The present invention provides a resin composition containing (A) an ethylene-vinyl alcohol copolymer, (B) a carboxylic acid and/or a carboxylate ion, and (C) a metal ion, wherein the component (B) includes (B2) a multivalent carboxylic acid and/or a multivalent carboxylate ion, and the molar ratio (B2/C) of the multivalent carboxylic acid and the multivalent carboxylate ion (B2) to the metal ion (C) is 0.002 or greater and 2 or less.

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Kurashiki, Japan

Yoshikazu Yamasaki