Patent ID: 8778470
Filing Date: 2014-07-15
Classification: B29B,B29C,B29K,B32B,B65D,C08L,Y10T

Abstract:
1. A multilayer bottle comprising outermost and innermost layers each made mainly of a polyester (A) and at least one barrier layer interposed between the outermost and innermost layers, wherein the polyester (A) is a thermoplastic resin obtained by polymerizing a dicarboxylic acid component containing 80 mol % or more of terephthalic acid with a diol component containing 80 mol % or more of ethylene glycol; and the barrier layer comprises a polyamide (B) obtained by polycondensing a diamine component containing 70 mol % or more of m-xylylenediamine with a dicarboxylic acid component containing 70 mol % or more of adipic acid, and a polyamide (C) having a higher saturation water content than that of the polyamide (B) as measured at 23° C. and 50% RH under 1 atm, a content of the polyamide (C) in the barrier layer being 20% by weight or less on the basis of a weight of the barrier layer, wherein the polyamide (C) is a combination of aliphatic polyamide and amorphous semi-aromatic polyamide, and wherein the amorphous semi-aromatic polyamide is contained in an amount of from 0.35 to 2.9 parts by weight per 1 part by weight of the aliphatic polyamide, and wherein a content of the polyamide (B) in the barrier layer is 80% by weight or more on the basis of a weight of the barrier layer.