Patent ID: 6143384
Filing Date: 2000-11-07
Classification: B32B,B65D,C08J,Y10S,Y10T

Abstract:
A gas barrier film comprising a resin composition comprising a reaction product of poly(meth)acrylic acid (A), a polyalcoholic polymer (B) and a metal (C) as starting materials, wherein said resin composition has at least the chemical structures (X), (Y) and (Z) described below, the degree of esterification defined by the equation (1) is from 0.01 to 0.5 and the degree of ionization defined by the equation (2) is from 0.01 to 0.9:chemical structure (x): ##STR5## wherein R.sub.0 is H or CH.sub.3 ; chemical structure (Y): ##STR6## wherein R.sub.0 is H or CH.sub.3, and R.sup.1 is a residue of a polyalcoholic polymer;chemical structure (Z): ##STR7## and, optionally, chemical structure (Z.sup.1): ##STR8## wherein each R.sub.0 is independently H or CH.sub.3, Me.sup.n+ is a n-valent metal ion, n is 2 or 3, and Me.sup.+1 is an alkali metal; ##EQU2## wherein b, c and d represents molar ratios of carbon-oxygen double bonds in the chemical structures (X), (Y) and (Z) plus (Z') of the resin composition.