C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/3077, 18/514
C08L 23/06 (2006.01) B29C 49/04 (2006.01) B29D 7/01 (2006.01) B32B 27/08 (2006.01)
Patent
CA 1305264
PLASTIC COMPOSITE BARRIER STRUCTURES ABSTRACT Composite moisture and oxygen barrier structures in the form of films, sheets, tubes and bottles are described which are composed of foils of high density polyethylene and foils of polar oxygen barrier resins adhered to each other with a coextruded bonding resin composition composed of blends of predominantly high density polyethylene containing low levels of a grafted unsaturated dicarboxylic acid anhydride and linear low density polyethylenes which are copolymers of ethylene with either octene-1 or butene-1. The preferred dicarboxylic acid anhydride is maleic anhydride. The oxygen barrier resins are preferably ethylene/vinyl alcohol copolymers or amorphous polycarboxylamides from condensation polymerization of aliphatic diamines and aromatic dicarboxylic acids. AD-5561
545579
E. I. Du Pont de Nemours And Company
Sim & Mcburney
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