Patent ID: 7700685
Filing Date: 2010-04-20
Classification: C08J

Abstract:
1. A method of producing a hydrous ethylene-vinyl alcohol copolymer composition, the method comprising the steps of: introducing a solution containing an ethylene-vinyl alcohol copolymer and an alcohol into a tower vessel from a solution introducing position located at an upper portion of the tower vessel; introducing water vapor into the tower vessel from a water vapor introducing position located at a lower portion of the tower vessel; keeping the solution in counter-flow contact with the water vapor in the tower vessel; extracting at least part of the alcohol from the tower vessel at an alcohol extracting position located above the solution introducing position; and extracting a hydrous composition containing the ethylene-vinyl alcohol copolymer from the tower vessel at a position located below the water vapor introducing position; wherein water is supplied to a water supplying position located above the solution introducing position.