Patent ID: 6613833
Filing Date: 2003-09-02
Classification: B29B,C08F,C08J

Abstract:
A method for producing an aqueous ethylene-vinyl alcohol copolymer composition, which comprisesintroducing an ethylene-vinyl alcohol copolymer solution that contains at least 50 parts by weight, relative to 100 parts by weight of the ethylene-vinyl alcohol copolymer therein, of an alcohol having a boiling point of not higher than 100Â° C., into a vessel, introducing water vapor into the vessel, wherein the water vapor introduced into the vessel contains 0 parts to at most 10 parts by weight of an alcohol, relative to 100 parts by weight of the water vapor, contacting the solution with the water vapor in the vessel separately removing (1) alcohol and water vapor, and (2) an aqueous ethylene-vinyl alcohol copolymer composition that contains from 0 to 10 parts by weight of the alcohol and from 10 to 500 parts by weight of water, relative to 100 parts by weight of the ethylene-vinyl alcohol copolymer therein, from the vessel, and optionally extruding the aqueous ethylene-vinyl alcohol copolymer composition and cutting the extruded composition into pellets.