Bonding compositions and shaped articles utilizing the bonding c

Stock material or miscellaneous articles – Hollow or container type article – Cellular material derived from plant or animal source

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4284752, 4284769, 428480, 528288, B65D 300, B32B 2710, C08F 1230

Patent

active

044825870

ABSTRACT:
Bonding compositions for bonding polyesters or copolyesters to poly(vinyl alcohol) or copolymers thereof, the composition comprising a poly(esteramide) having an inherent viscosity of at least 0.8 dl/g, said poly(esteramide) containing repeating units from at least 70 mol percent of a dicarboxylic acid selected from pimelic, azelaic, sebacic acid or combinations thereof and optionally up to 30 mol percent of a second linear aliphatic dicarboxylic acid having at least four carbon atoms connected linearly between the two acid groups or an aromatic dicarboxylic acid; repeating units from 10 mol percent to 30 mol percent of a diamine selected from 1,6-hexanediamine, 1,4-cyclohexanebismethylamine or combinations thereof; and repeating units from 90 to 70 mol percent of a glycol selected from ethylene glycol, 1,4-butanediol, 1,4-cyclohexanedimethanol or combinations thereof. Also disclosed are shaped articles comprising a polyester polymer layer and a poly(vinyl alcohol) layer, the layers being bonded together with bonding compositions of this invention.

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