NOVELTY - Polyamide-grafted polymers (I) comprising a polyolefin backbone (40-95 wt.%) containing a residue of at least one unsaturated monomer, and at least one polyamide graft (5-60 wt.%), is new, where the polyamide graft is attached to the polyolefin backbone by the residue of the unsaturated monomer comprising a functional group capable of reacting via a condensation reaction with a polyamide having at least one amine end group and/or at least one carboxylic acid end group.    USE - (I) is useful in the composition, which is useful in the photovoltaic module. The photovoltaic module is useful under a source of radiation for producing electricity (all claimed).    ADVANTAGE - The photovoltaic modules can be manufactured more easily. The protective backsheet film exhibits good adhesion, thermomechanical stability, UV resistance, heat resistance, water vapor permeability and electrical properties.    DETAILED DESCRIPTION - Polyamide-grafted polymers (I) comprising a polyolefin backbone (40-95 wt.%) containing a residue of at least one unsaturated monomer, and at least one polyamide graft (5-60 wt.%), is new, where the polyamide graft is attached to the polyolefin backbone by the residue of the unsaturated monomer comprising a functional group capable of reacting via a condensation reaction with a polyamide having at least one amine end group and/or at least one carboxylic acid end group, the residue of the unsaturated monomer is attached to the backbone by grafting or copolymerization, and the melting point or glass transition temperature of the polyamide grafts is greater than or equal to 85 degrees C. INDEPENDENT CLAIMS are included for:    (1) a composition comprising at least one polyamide-grafted polymer;    (2) photovoltaic module (20), comprising one or more photovoltaic cells encased in an encapsulant (22), an upper protective layer (24), and a protective backsheet film (26), where the protective backsheet film is a film comprising at least one layer of the composition; and    (3) manufacturing the photovoltaic module, comprising assembling the various layers that constitute the module, at least one of these layers being the protective backsheet film.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a cross section through a solar module.    Photovoltaic cell (10)    Photovoltaic module (20)    Encapsulant (22)    Upper protective layer (24)    Protective backsheet film. (26)