Process for manufacturing composition of solvolysis product of ethylene-vinyl ester copolymer

A process for manufacturing a composition of a solvolysis product of an ethylene-vinyl ester copolymer, which comprises:

• conducting solvolysis of an ethylene-vinyl ester copolymer (A′) and a modified ethylene-vinyl ester copolymer (B′) comprising a structural unit derived from a compound represented by the general formula (2) in one system to manufacture the composition of a solvolysis product of an ethylene-vinyl ester copolymer comprising a solvolysis product (A) of the ethylene-vinyl ester copolymer and a solvolysis product (B) of the modified ethylene-vinyl ester copolymer comprising a structural unit represented by the general formula (1),
• wherein a ratio of an ethylene content (B′)/(A′) of the ethylene-vinyl ester copolymer (A′) and the modified ethylene-vinyl ester copolymer (B′) in the step of conducting solvolysis is 1 or more, and a blending ratio (B′)/(A′) of the ethylene-vinyl ester copolymer (A′) and the modified ethylene-vinyl ester copolymer (B′) is from 50/50 to 1/99 by weight ratio:
• wherein R1, R2 and R3 each independently represent a hydrogen atom or an organic group, X represents a single bond or a bonding chain, and R4, R5 and R6 each independently represent a hydrogen atom or an organic group;
• and
• wherein R1, R2 and R3 each independently represent a hydrogen atom or an organic group, X represents a single bond or a bonding chain, R4, R5 and R6 each independently represent a hydrogen atom or an organic group, R7 and R8 each independently represent a hydrogen atom, a hydrocarbon group or R9—CO— (wherein R9 represents an alkyl group), R7 and R8 may bond to form a five-membered ring and the five-membered ring represents a cyclic carbonate structure or a cyclic acetal structure.