Patent ID: 6686405
Filing Date: 2004-02-03
Classification: B29B,B29C,B29K,C08F,C08J,C08K,C08L

Abstract:
A process for producing an ethylene-vinyl alcohol copolymer resin, comprisingfeeding an ethylene-vinyl alcohol copolymer into an extruder to form a molten resin, keeping the temperature of the molten resin in the extruder at 70 to 170Â° C., adding at least one additive selected from the group consisting of a carboxylic acid, a boron compound, a phosphoric acid compound, an alkali metal salt, and an alkali earth metal salt to the molten resin in the extruder, adjusting an amount of water present in the extruder by supplying or removing water, and discharging the resin from the extruder, wherein the resin has a water content right after being discharged of 5 to 40 weight %.