Patent ID: 8765037
Filing Date: 2014-07-01
Classification: B29B,C08J,C08K

Abstract:
1. A process for preparing ethylene-vinyl alcohol copolymer composition comprising the steps of: feeding an alcohol solution of an ethylene-vinyl alcohol copolymer into a tower type apparatus, the ethylene-vinyl alcohol copolymer alcohol solution comprising 100 parts by weight of the ethylene-vinyl alcohol copolymer and not less than 300 parts by weight of an alcohol having a carbon number of not greater than 4; bringing the ethylene-vinyl alcohol copolymer alcohol solution into contact with water, and feeding out a part of the alcohol together with water from the apparatus to provide a water/alcohol mixture solution of the ethylene-vinyl alcohol copolymer comprising 100 parts by weight of the ethylene-vinyl alcohol copolymer, 20 to 200 parts by weight of the alcohol and 50 to 200 parts by weight of water; and bringing the ethylene-vinyl alcohol copolymer water/alcohol mixture solution into contact with water in an agitator container with stirring, and feeding out at least a part of the alcohol from the container to provide an ethylene-vinyl alcohol copolymer composition comprising 100 parts by weight of the ethylene-vinyl alcohol copolymer, less than 10 parts by weight of the alcohol and 20 to 100 parts by weight of water.