Improved adhesion of polyolefins to polyesters

2-26. (canceled)

Polyethylene or polyethylene terephthalate containing from 0.1 wt % to 15 wt % of a block copolymer of the following structure:

• wherein R and R1 may be the same or different and each independently represents an alkyl or aryl group, and X may be hydrogen or C1 to C20 alkyl group which may be branched or linear;
• wherein the aromatic ring substituent joined to polymer B is positioned meta or para to the aromatic ring substituent joined to polymer A;
• and wherein polymer A is a polymer (or copolymer) of ethylene and polymer B is a polymer of monomers selected from vinyl acetate, C1-C9 acrylate esters, acrylic acid, and mixtures thereof.

A laminate comprising a layer of polyethylene or paper bonded to a layer of polyethylene terephthalate, wherein at least one layer contains a block copolymer of the following structure:

• wherein R and R1 may be the same or different and each independently represents an alkyl or aryl group, and X may be hydrogen or C1 to C20 alkyl group which may be branched or linear;
• wherein the aromatic ring substituent joined to polymer B is positioned meta or para to the aromatic ring substituent joined to polymer A;
• and wherein polymer A is a polymer (or copolymer) of ethylene and polymer B is a polymer of monomers selected from vinyl acetate, C1-C9 acrylate esters, acrylic acid, and mixtures thereof.