Title:
SAPONIFIED ETHYLENE/VINYL ESTER COPOLYMER COMPOSITION AND MULTILAYER STRUCTURE USING THE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2012/005288
Kind Code:
A1
Abstract:
Disclosed are: a saponified ethylene/vinyl ester copolymer (EVOH) resin composition which exhibits, even at high temperature, excellent discoloration resistance and excellent heat resistance and which has excellent adhesiveness to a thermoplastic resin composition and can provide a multilayer structure having excellent surface appearance; and a multilayer structure that contains a layer of the composition. The EVOH resin composition comprises (A) an EVOH resin, (B) an alkaline earth metal, (C) an alkali metal, and (D) a carboxylic acid having 2 to 4 carbon atoms, and satisfies the following requirements (α) to (γ): (α) the content of the alkaline earth metal (B) relative to the EVOH resin (A) exceeds 10ppm and is up to 50ppm; (β) the content ratio (C/B) of the alkali metal (C) to the alkaline earth metal (B) is 0.001 to 0.5; and (γ) the content ratio (D/B) of the carboxylic acid (D) to the alkaline earth metal (B) is 5 to 30.
Inventors:
KANI Shouichi (1-88, Oyodonaka 1-chome, Kita-ku, Osaka-sh, Osaka 76, 〒5310076, JP)
Application Number:
JP2011/065471
Publication Date:
January 12, 2012
Filing Date:
July 06, 2011
Export Citation:
Assignee:
THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD. (1-88, Oyodonaka 1-chome Kita-ku, Osaka-sh, Osaka 76, 〒5310076, JP)
日本合成化学工業株式会社 (〒76 大阪府大阪市北区大淀中一丁目１番８８号 Osaka, 〒5310076, JP)
日本合成化学工業株式会社 (〒76 大阪府大阪市北区大淀中一丁目１番８８号 Osaka, 〒5310076, JP)
International Classes:
C08L29/04; B32B27/28; B32B27/36; C08K3/22; C08K5/17
Attorney, Agent or Firm:
KAMITANI Eriko (9-4 Higashitenma 2-chome, Kita-ku Osaka-sh, Osaka 44, 〒5300044, JP)
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Claims: