Abstract: An extrudable adhesive composition is provided which is useful for bonding a layer of a polystyrene resin to a layer of a second resin. The extrudable adhesive composition comprisesA) an ethylene polymer fraction at between about 35 and about 65 wt percent relative to the total of A) plus B), the ethylene polymer fraction comprising an ethylene polymer, copolymer or mixture of ethylene polymers and copolymers, each ethylene polymer or copolymer being formed from at least about 60 weight percent ethylene monomers, balance other copolymerizable monomers, and the ethylene polymer fraction A) being formed, in total, of at least about 65 weight percent ethylene monomers, balance, other copolymerizable monomers, andB) between about 35 and about 65 wt %, relative to total of A) plus B), of a styrene/aliphatic/styrene triblock elastomer, between about 20 and about 60 wt % of said triblock elastomer comprising styrene monomers.The MI.sub.2(SB).sup.2 /MI.sub.2(PE) is about 1.0 or above.

Abstract: Composition comprising a mixture of from about 30% to about 99.9% of a polyolefin base resin; from about 0.1% to about 50% of a graft polymerized block copolymer having polystyrene end blocks and an aliphatic middle block; from 0 to about 40% by weight of an elastomer different from the above components; and from 0 to about 30% by weight of a nonelastomeric second polyolefin made from different monomers from those of the polyolefin base resin. The composition can be used as an adhesive film or tie layer, optinally by coextrusion between layers to be joined. Coatings and coated substrates are also disclosed.