An object of the present invention is to obtain a composition having, for example, improved anti-sagging properties, pigment dispersibility, and crack resistance, and the present invention relates to an ethylene/α-olefin copolymer composition including: an ethylene/α-olefin copolymer (A) satisfying requirements (a-1) to (a-3) described below; one or more selected from a color material (D), a resin (E) and an oil (F); and a solvent (C), (a-1) a methyl group index measured by .sup.1H-NMR is in a range of 40 to 60%, (a-2) a weight average molecular weight (Mw) determined by gel permeation chromatography (GPC) is in a range of 3,000 to 30,000, (a-3) no melting peak is observed at temperatures ranging from −100° C. to 150° C. in differential scanning calorimetry (DSC).

An object of the present invention is to obtain a composition having, for example, improved anti-sagging properties, pigment dispersibility, and crack resistance, and the present invention relates to an ethylene/α-olefin copolymer composition including: an ethylene/α-olefin copolymer (A) satisfying requirements (a-1) to (a-3) described below; one or more selected from a color material (D), a resin (E) and an oil (F); and a solvent (C), (a-1) a methyl group index measured by .sup.1H-NMR is in a range of 40 to 60%, (a-2) a weight average molecular weight (Mw) determined by gel permeation chromatography (GPC) is in a range of 3,000 to 30,000, (a-3) no melting peak is observed at temperatures ranging from −100° C. to 150° C. in differential scanning calorimetry (DSC).

A packaging material including a polymeric film surrounding a plastic mass form material. In embodiments, methods include packaging sticky plastic mass form polymers within a polymeric film to prevent agglomeration. Processes include the use of a polymeric film composition that is compatible with the core plastic mass form. The polymeric film can be applied to the plastic mass form through continuous coextrusion, as a film through a hot melt form, fill, and seal process, or as a sealed film bag for inclusion of cooled and coated or uncoated solid sticky plastic material shapes.

A packaging material including a polymeric film surrounding a plastic mass form material. In embodiments, methods include packaging sticky plastic mass form polymers within a polymeric film to prevent agglomeration. Processes include the use of a polymeric film composition that is compatible with the core plastic mass form. The polymeric film can be applied to the plastic mass form through continuous coextrusion, as a film through a hot melt form, fill, and seal process, or as a sealed film bag for inclusion of cooled and coated or uncoated solid sticky plastic material shapes.

The present invention provides polymer compositions having improved corrosivity, color stability and clarity. Also disclosed is a process of preparing the polymers. The process may comprise incorporating into the polymer an acid neutralizing amount of an amorphous aluminum silicate. The amorphous aluminum silicate may be present in the polymer in an amount such that the polymer composition having a Corrosivity Index of less than 6. A refractive index of the amorphous aluminum silicate may be the same or substantially the same as a refractive index of the polymer.

The present invention relates to a backsheet for photovoltaic modules comprising a polymeric layer comprising an aliphatic polyamide comprising 1,10-decanedioic acid. Examples of such aliphatic polyamides are polyamide 4,10, polyamide 5,10 or polyamide 6,10. Preferably polyamide 4,10 is present in the rear layer of the backsheet. A polyolefin layer is preferably present in the core layer of the backsheet. It is however also possible that the polyamide is present in the core layer and polyolefin is present in the rear layer of the backsheet. The polyolefin is preferably chosen from the group consisting of polyethylene, polypropylene or ethylene-propylene copolymers. More preferably the polyolefin is polypropylene. The backsheet preferably comprises at least a further polymeric layer comprising a polymer selected from the group consisting of an optionally functionalized polyolefin such as a maleic anhydride functionalized polypropylene homo or copolymer. The present invention further relates to a photovoltaic module containing essentially, in order of position from the front-sun facing side to the back non-sun-facing side, a transparent pane, a front encapsulant layer, a solar cell layer comprised of one or more electrically interconnected solar cells, a back encapsulant layer and the back-sheet according to the present invention.

A primer composition that resists peeling and cracking is provided that includes an acrylic copolymer having a Tg of between −15 and −35° C.

A primer composition that resists peeling and cracking is provided that includes an acrylic copolymer having a Tg of between −15 and −35° C.

The disclosed retroreflective element includes a polymeric core that is loaded with a plurality of first beads and second beads distributed at the perimeter of the core. The first beads are different than the second beads. Because of the beads in the core, the retroreflective element remains useful for returning light even after portions of the core begins to wear away. Further, when the retroreflective elements get wet, water will settle to the bottom of the perimeter of the core. Therefore, using the second beads with a refractive index suited for wet conditions, while the first beads have a refractive index suited for dry conditions allows the retroreflective element to be useful in both wet and dry conditions even while the retroreflective element wears during use.

The disclosed retroreflective element includes a polymeric core that is loaded with a plurality of first beads and second beads distributed at the perimeter of the core. The first beads are different than the second beads. Because of the beads in the core, the retroreflective element remains useful for returning light even after portions of the core begins to wear away. Further, when the retroreflective elements get wet, water will settle to the bottom of the perimeter of the core. Therefore, using the second beads with a refractive index suited for wet conditions, while the first beads have a refractive index suited for dry conditions allows the retroreflective element to be useful in both wet and dry conditions even while the retroreflective element wears during use.