A resin composition for a solar cell encapsulant that is used for forming a solar cell encapsulant, the resin composition including at least one kind of ethylene-polar monomer copolymer (A1) selected from an ethylene-vinyl ester copolymer and an ethylene-unsaturated carboxylic acid ester copolymer, an epoxy group-containing ethylene-based copolymer (A2) (excluding the ethylene-polar monomer copolymer (A1)), an ethylene-α-olefin copolymer (B), and a metal inactivating agent (C).

The present invention relates to an anionic polymerization initiator represented by Formula 1 below for producing a polyolefin-polystyrene block copolymer, an anionic polymerization initiator composition, and a production method therefor,

##STR00001##

wherein R.sub.1, and A are described herein.

The present invention relates to an anionic polymerization initiator represented by Formula 1 below for producing a polyolefin-polystyrene block copolymer, an anionic polymerization initiator composition, and a production method therefor,

##STR00001##

wherein R.sub.1, and A are described herein.

The present invention relates to a composition for an encapsulant film including an ethylene/alpha-olefin copolymer having high volume resistance and light transmittance, and an encapsulant film using the same.

The present invention relates to a composition for an encapsulant film including an ethylene/alpha-olefin copolymer having high volume resistance and light transmittance, and an encapsulant film using the same.

The present invention relates to a composition for an encapsulant film including an ethylene/alpha-olefin copolymer having high volume resistance and light transmittance, and an encapsulant film using the same.

An ethylene/alpha-olefin copolymer and method for preparing the same is disclosed herein. In some embodiments, an ethylene/alpha-olefin copolymer satisfying the following conditions, (a) a density of 0.85 to 0.89 g/cc, (b) a molecular weight distribution of 1.8 to 2.3, (c) a melt index (MI.sub.2.16) of 1 to 100 dg/min, and (d) a full width at half maximum (FWHM) of a crystallization peak of 15 or more. The ethylene/alpha-olefin copolymer has high volume resistance and light transmittance.

An ethylene/alpha-olefin copolymer and method for preparing the same is disclosed herein. In some embodiments, an ethylene/alpha-olefin copolymer satisfying the following conditions, (a) a density of 0.85 to 0.89 g/cc, (b) a molecular weight distribution of 1.8 to 2.3, (c) a melt index (MI.sub.2.16) of 1 to 100 dg/min, and (d) a full width at half maximum (FWHM) of a crystallization peak of 15 or more. The ethylene/alpha-olefin copolymer has high volume resistance and light transmittance.

An ethylene/alpha-olefin copolymer and method for preparing the same is disclosed herein. In some embodiments, an ethylene/alpha-olefin copolymer satisfying the following conditions, (a) a density of 0.85 to 0.89 g/cc, (b) a molecular weight distribution of 1.8 to 2.3, (c) a melt index (MI.sub.2.16) of 1 to 100 dg/min, and (d) a full width at half maximum (FWHM) of a crystallization peak of 15 or more. The ethylene/alpha-olefin copolymer has high volume resistance and light transmittance.

A catalyst system including the product of the combination of an unbridged Group 4 metallocene compound and a 2,6-bis(imino)pyridyl iron complex is provided. A process for the polymerization of monomers (such as olefin monomers) and a polymer produced therefrom are also provided.