VINYL HALIDE POLYMER BARRIER PACKAGING COMPOSITIONS

摘要

2070279 9109084 PCTABS00005 Vinyl halide polymer compositions exhibiting reduced gas permeability are described which comprise a mixture of: (a) at least one vinyl halide polymer; (b) from about 1 to about 40 % by weight, based on the weight of the vinyl halide polymer (a), of an ethylene-vinyl alcohol copolymer containing from about 15 to about 55 mole percent of ethylene; and (c) at least one carbonyl-containing polymer wherein the carbonyl group is selected from the group consisting of: -C(O)-, -C(O)O-, -N-C(O)-, and -N-C(O)O-. The compositions of the present invention can be thermoformed into a wide variety of useful articles such as films, sheets and hollow articles which are characterized as having good impact strength and mechanical integrity.