Barrier coatings

Claim 2

acrylamide in combination with at least one additional polar monomer selected from the group consisting of acrylonitrile, N-(alkyl) acrylamide having from one to three carbon atoms in said alkyl groups, N-methylol acrylamide, N(2-(2-methyl-4-oxopentyl)) acrylamide, methacrylamide, N-(alkyl) methacrylamide having from one to three carbon atoms in said alkyl groups, acrylic acid, methacrylic acid and alkali metal and ammonium salts of acrylic and methacrylic acid, maleic and fumaric acids, itaconic and citraconic acids, half alkyl esters of maleic, fumaric, itaconic, and citraconic acids having from one to six carbon atoms in said alkyl groups, acrylyl and methacrylyl esters of hydroxyalkanoic acids having from two to six carbon atoms in said alkanoic acids, acrylylamide and methacrylylamides of aminoalkanoic acids having from two to six carbon atoms in said aminoalkanoic acid, hydroxyethyl and hydroxypropyl esters of acrylic, methacrylic, maleic and fumaric acids, vinyl esters of alkanoic acids having from one to six carbon atoms, vinyl esters of alkylsulfonic acids having from one to six carbon atoms in the alkyl group, vinyl esters of phenylsulfonic acids, acrylyl and methacrylyl esters of hydroxyalkylsulfonic acid having from one to six carbon atoms in said alkyl moieties, and acrylyl and methacrylyl ester of hydroxyalkylsuflonamides, having from 1 to 6 carbon atoms in said hydroxyalkyl moieties; and (B) interpolymers of the type described in (A) treated with an acid or a base having an ionization constant higher than about 10 4 in amounts equivalent to up to about 100 percent of the amide content of said interpolymer, and (II) polyvinylidene chloride wherein (I) is present in an amount from about 0.05 parts to about 20 parts for each one part by weight of (II).

Claim 3

Composition of claim 1 wherein the interpolymer is represented by (B).

Claim 4

Composition of claim 1 wherein the ethylene-vinyl chloride-acrylamide interpolymer is present in an amount from about 0.1 parts to about 0.4 parts by weight for each one part by weight of (II).

Claim 5

Composition of claim 1 wherein the interpolymer contains from about 15 to about 70 weight percent ethylene, from about 30 to about 85 weight percent vinyl chloride and from about 1 to about 5 weight percent acrylamide and is present in an amount from about 0.1 parts to about 0.4 parts by weight for each one part by weight of (II).

Claim 6

Composition of claim 1 wherein the interpolymer contains about 76 percent vinyl chloride, about 21 percent ethylene and abOut 3 percent acrylamide.

Claim 7

Composition of claim 1 wherein the additional polar component comprises acrylamide and N-methylol acrylamide.

Claim 8

Composition comprising a dispersion of the polyblend composition of claim 1 in an aqueous medium.

Claim 9

Composition of claim 8 wherein the polyblend composition the interpolymer contains from about 15 to about 70 weight percent ethylene, from about 30 to about 85 weight percent vinyl chloride and from about 1 to about 5 weight percent acrylamide.