| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lid material that can maintain oxygen barrier ability and appearance even under a severe condition. <P>SOLUTION: The lid material for a container is formed using a laminated body including a base material and a gas barrier layer. The gas barrier layer is made of a composition containing a hydrolytic condensation product of at least one type of compound (L) containing a characteristic group having a hydrolytic ability, and a polymer (X) containing a carboxyl group and/or a carboxylic acid anhydride group. At least a part of -COO- group of the polymer (X) is neutralized by and/or reacted with a compound (P) containing two or more amino groups. At least a part of the -COO- group of the polymer (X) is neutralized by a metal ion having dievalence or above. A ratio of [an equivalent amount of the amino group contained in the compound (P)]/[an equivalent amount of the -COO- group of the polymer (X)] is within a range of 0.2/100 to 20.0/100. <P>COPYRIGHT: (C)2010,JPO&INPIT |
