PROCESS FOR MANUFACTURING EVOH RESIN COMPOSITION

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United States of America Patent

APP PUB NO 20110166292A1
SERIAL NO

12809127

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention provides a composition of a solvolysis product of an ethylene-vinyl ester copolymer excellent in productivity and formability, which has a small absolute value of melting peak, even in the case where two or more kinds of solvolysis products of ethylene-vinyl ester copolymers are blended. The invention relates to a process for manufacturing a composition of a solvolysis product of an ethylene-vinyl ester copolymer, which comprises conducting solvolysis of an ethylene-vinyl ester copolymer (A′) and a modified ethylene-vinyl ester copolymer (B′) comprising a structural unit derived from a compound represented by the general formula (2) in one system, and manufacturing the composition of a solvolysis product of an ethylene-vinyl ester copolymer comprising a solvolysis product (A) of the ethylene-vinyl ester copolymer and a solvolysis product (B) of the modified ethylene-vinyl ester copolymer comprising a structural unit represented by the general formula (1), wherein a ratio of an ethylene content (B′)/(A′) in the step of conducting solvolysis is 0.3 or more and less than 1:each independently represent a hydrogen atom or an organic group; andmay bond to form a five-membered ring and the five-membered ring represents a cyclic carbonate structure or a cyclic acetal structure.

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Patent Owner(s)

Patent OwnerAddress
THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO LTDOSAKA JAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Beniya, Yasufumi Osaka, JP 8 16
Fujimura, Keisuke Osaka, JP 6 15
Harao, Akio Osaka, JP 5 14

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