Abstract: The present disclosure is directed to compositions comprising: (a) a propylene-based elastomer, comprising at least about 60 wt % propylene-derived units and about 5 to about 25 wt % ethylene-derived units, based on total weight of the propylene-based elastomer, wherein the propylene-based elastomer has a heat of fusion of less than about 80 J/g; and (b) a polyalphaolefin. Such compositions have at least one of the following properties: (a) a hardness of about 25 to about 67 shore A (ASTM D2240); (b) a glass transition temperature of about ?35° C. to about ?65° C. (ASTM D3418-08, 10° C./min); and (c) an impact resistance at a temperature no lower than about ?40° C. (ASTM D3763).

Abstract: A method of forming a thermoplastic vulcanizate by first providing a melt-blender having a die through which melt-blended thermoplastic vulcanizate passes to form a shaped article; wherein the die comprises a flow design having at least one flow branch having a taper angle and a flow reservoir at the end of each flow branch; and wherein the taper angle of the flow design ranges from 5 to 20 degrees; followed by melt-blending a thermoplastic and an elastomer with an organic peroxide curative in the melt-blender to form a thermoplastic vulcanizate; and finally, passing the melt-blended thermoplastic vulcanizate through the flow design to form the shaped article.

Abstract: A method of forming a thermoplastic vulcanizate by first providing a melt-blender having a die through which melt-blended thermoplastic vulcanizate passes to form a shaped article; wherein the die comprises a flow design having at least one flow branch having a taper angle and a flow reservoir at the end of each flow branch; and wherein the taper angle of the flow design ranges from 5 to 20 degrees; followed by melt-blending a thermoplastic and an elastomer with an organic peroxide curative in the melt-blender to form a thermoplastic vulcanizate; and finally, passing the melt-blended thermoplastic vulcanizate through the flow design to form the shaped article.

Abstract: Disclosed are techniques and related material blends for improving adhesion between a polyolefin film and a pressure sensitive adhesive, and also significantly decreasing the coefficient of thermal expansion of a polyolefin film by modifying the chemical properties of the film. Specifically, particular amounts of a modifying polymer and/or copolymer such as ethylene vinyl acetate are incorporated into the polyolefin film. The polyolefin film may for instance be either a polyethylene or polypropylene film.

Abstract: Disclosed are techniques and related material blends for improving adhesion between a polyolefin film and a pressure sensitive adhesive, and also significantly decreasing the coefficient of thermal expansion of a polyolefin film by modifying the chemical properties of the film. Specifically, particular amounts of a modifying polymer and/or copolymer such as ethylene vinyl acetate are incorporated into the polyolefin film. The polyolefin film may for instance be either a polyethylene or polypropylene film.