Laminate and use thereof

摘要

A laminate having an excellent gas barrier property and an improved organic solvent resistance and is suitable for use in containers for chemicals and volatile materials such as organic solvents and fuels, which comprises: (A) a layer comprising (A1) a hydrolyzed ethylene-vinyl acetate copolymer having an ethylene content of 10 to 70 % by mole and a degree of hydrolysis of at least 85 % by mole, (B) a layer of a resin composition comprising (B1) a polyolefin resin and (B2) 0.5 to 40 % by weight, based on said polyolefin (B1), of a hydrolyzed ethylene-vinyl acetate copolymer having an ethylene content of 10 to 70 % by mole and a degree of hydrolysis of at least 85 % by mole, (C) an outer layer of a polyolefin resin disposed on the outer side of said layer (A), and optionally an outer layer of said polyolefin resin (C) disposed on the other side, wherein the ratio of the apparent melt viscosity of said polyolefin (B1) to that of said hydrolyzed copolymer (B2) at a rate of shear of 100 cm<-1> and at 230 DEG C is from 0.1 to 50. The laminate may further contain, in the layer (A), at least one member selected from the group consisting of (A2) a boron compound, (A3) a polyolefin resin, (A4) a termical controlled-polyamide resin, (A5) a carboxylic acid-modified polyolefin resin, (A6) at least one of salts, oxides and hydroxides of alkali and alkaline earth metals, and may further contain, in the layer (B), a graft copolymer prepared by graft polymerization of an ethylenically unsaturated carboxylic acid or its derivative onto a polyolefin followed by a reaction with a polyamide.