METHOD FOR PRODUCING EVOH RESIN COMPOSITION

摘要

It is a process for manufacturing a resin mixture of a saponified ethylene-vinyl ester copolymer, which is a resin mixture of a saponified ethylene-vinyl ester copolymer (A) having an ethylene content of 20 to 60% and a saponified modified ethylene-vinyl ester copolymer (B) having an ethylene content of 20 to 60% and comprising a structural unit (1):
wherein a mixture of an ethylene-vinyl ester copolymer (A') obtained by copolymerizing ethylene and vinyl ester and a modified ethylene-vinyl ester copolymer (B') obtained by copolymerizing ethylene, vinyl ester and at least one kind of monomers (2) to (4) (for example, 3,4-diacetoxy-1-butene) is saponified in one system, wherein the ethylene content of the ethylene-vinyl ester copolymer (A') is larger than the ethylene content of the modified ethylene-vinyl ester copolymer (B').