发明申请
US20120248640A1 METHOD FOR PRODUCING ETHYLENE-VINYL ALCOHOL COPOLYMER RESIN, ETHYLENE-VINYL ALCOHOL COPOLYMER RESIN, AND MULTILAYER STRUCTURE 有权
乙烯 - 乙烯醇共聚物树脂的生产方法,乙烯 - 乙烯醇共聚物树脂和多层结构

METHOD FOR PRODUCING ETHYLENE-VINYL ALCOHOL COPOLYMER RESIN, ETHYLENE-VINYL ALCOHOL COPOLYMER RESIN, AND MULTILAYER STRUCTURE
摘要:
Provided is by the present invention is a method for producing an EVOH resin having sufficient long-run workability in melt molding and enabling prevention of coloring such as yellowing, an EVOH resin obtained by this method for production, and a laminate obtained from this resin.The present invention is a method for producing an ethylene-vinyl alcohol copolymer resin, the method including a step of saponifying an ethylene-vinyl ester copolymer to obtain an ethylene-vinyl alcohol copolymer, in which the method is characterized by further including a step of irradiating the ethylene-vinyl ester copolymer or the ethylene-vinyl alcohol copolymer with an infrared ray.
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