The present invention provides a composition of a solvolysis product of an ethylene-vinyl ester copolymer excellent in productivity and melt moldability, which has no difference in melting peak or which, when there are two or more melting peaks, has an especially small difference between the highest-temperature melting peak and the lowest-temperature melting peak, even in the case where two or more kinds of solvolysis products of ethylene-vinyl ester copolymers are blended. The invention relates to 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 represetns 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.
本发明提供了一种
乙烯-
乙烯酯共聚物的溶解产物组合物,该组合物具有优异的生产率和熔融模塑性,即使在混合两种或两种以上
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乙烯酯共聚物溶解产物的情况下,该组合物也没有熔融峰差异,或者当有两个或两个以上熔融峰时,最高温度熔融峰和最低温度熔融峰之间的差异特别小。本发明涉及一种制造
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乙烯酯共聚物溶解产物组合物的工艺,该工艺包括:将
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乙烯基酯共聚物(A')和改性
乙烯-
乙烯基酯共聚物(B')在一个体系中进行溶解,改性
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乙烯基酯共聚物的结构单元由通式(2)表示的化合物衍生而来,从而制造
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乙烯基酯共聚物的溶解产物组合物。
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乙烯基酯共聚物的溶解产物 (A) 和改性
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乙烯基酯共聚物的溶解产物 (B) 的组合物,改性
乙烯-
乙烯基酯共聚物包含通式 (1) 所代表的结构单元、其中,
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乙烯酯共聚物(A')和改性
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乙烯酯共聚物(B')在进行溶解步骤中的
乙烯含量(B')/(A')之比为 1 或以上,
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乙烯酯共聚物(A')和改性
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乙烯酯共聚物(B')的混合比(B')/(A')按重量比为 50/50 至 1/99:
其中,R1、R2 和 R3 各自独立地代表氢原子或有机基团,X 代表单键或键链,R4、R5 和 R6 各自独立地代表氢原子或有机基团;以及
其中 R1、R2 和 R3 各自独立地代表氢原子或有机基团,X 代表单键或键链,R4、R5 和 R6 各自独立地代表氢原子或有机基团,R7 和 R8 各自独立地代表氢原子、烃基或 R9-CO-(其中 R9 代表烷基),R7 和 R8 可键合形成五元环,五元环代表环状
碳酸酯结构或环状
缩醛结构。