Patent ID: 8329818
Filing Date: 2012-12-11
Classification: B29B,C08F,Y10T

Abstract:
1. A method for producing a modified ethylene-vinyl alcohol copolymer (C) comprising reacting an ethylene-vinyl alcohol copolymer (A) with a monofunctional epoxy compound (B) having a molecular weight of not more than 500, wherein the reaction between the ethylene-vinyl alcohol copolymer (A) and the monofunctional epoxy compound (B) is carried out in an extruder, and wherein the ethylene-vinyl alcohol copolymer (A) and the monofunctional epoxy compound (B) are melt kneaded in the extruder in the presence of a catalyst (D) comprising an ion of a metal which belongs to Groups 3-12 of the periodic table, wherein the catalyst (D) comprises a sulfonic acid ion.