Adhesion promoter system, and method of producing the same

A method for producing an adhesion promoter system consisting of the steps of:

• selecting at least 60 percent by weight, based on the total weight of the solid content, of a first functionalized propylene-ethylene copolymer comprising 12 to 15 percent by weight of units derived from ethylene, and from 1 to 6 percent by weight of units derived from (2,2,6,6-tetramethylpiperidin-1-yl)oxyl(“4-Hydroxy-TEMPO”);
• selecting from 5 to less than 40 percent by weight of a second functionalized polyolefin, based on the total weight of the solid content, wherein said second functionalized polyolefin comprises homopolymers of propylene or copolymers of propylene with hexene, octene and/or other alpha-olefins, the homopolymers or copolymers having a single unsaturation;
• a terminal succinic anhydride moiety, and additional succinic anhydride substitutions on the polypropylene backbone, where the succinic anhydride substitution ranges from about 5 to about 45 weight percent of second functionalized polyolefin;
• and
• admixing said first functionalized propylene-ethylene copolymer with one or more solvents;
• and
• thereby forming said adhesion promoter system.