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

The present invention relates to a heterophasic polypropylene composition with an improved property profile, e.g. improved balance of toughness, softness and haze, comprising a heterophasic propylene copolymer and a copolymer of propylene and 1-hexene.

The present invention relates to a heterophasic polypropylene composition with an improved property profile, e.g. improved balance of toughness, softness and haze, comprising a heterophasic propylene copolymer and a copolymer of propylene and 1-hexene.

An object of the present invention is to provide a novel method of producing a nonpolar olefin polymer (e.g., a copolymer of a nonpolar olefin and a polar olefin). The present invention provides a method of producing a polar olefin polymer or copolymer, the method including the polymerization step of polymerizing a polar olefin monomer using, as a catalyst, a polymerization catalyst composition containing: 1) a metallocene complex represented by Formula (I), which contains a central metal M that is scandium (Sc) or yttrium (Y), a ligand Cp* containing a cyclopentadienyl derivative and being bound to the central metal, monoanionic ligands Q.sup.1 and Q.sup.2, and W neutral Lewis bases L wherein W is an integer of 0 to 3; and 2) an ionic compound composed of a non-coordinating anion and a cation. ##STR00001## ##STR00002##

An object of the present invention is to provide a novel method of producing a nonpolar olefin polymer (e.g., a copolymer of a nonpolar olefin and a polar olefin). The present invention provides a method of producing a polar olefin polymer or copolymer, the method including the polymerization step of polymerizing a polar olefin monomer using, as a catalyst, a polymerization catalyst composition containing: 1) a metallocene complex represented by Formula (I), which contains a central metal M that is scandium (Sc) or yttrium (Y), a ligand Cp* containing a cyclopentadienyl derivative and being bound to the central metal, monoanionic ligands Q.sup.1 and Q.sup.2, and W neutral Lewis bases L wherein W is an integer of 0 to 3; and 2) an ionic compound composed of a non-coordinating anion and a cation. ##STR00001## ##STR00002##

A diblock polymer composed of a first block and a second block is provided. The first block is a statistical copolymer comprising units of a 1,3-diene and more than 50 mol % of ethylene units. The second block is a polyethylene with a melting point above 90° C. and a number-average molar mass greater than or equal to 2000 g/mol and less than or equal to 10 000 g/mol. Such a diblock polymer has improved rheology compared to a statistical copolymer of the same microstructure and of the same macrostructure as the first block of the diblock polymer.

A diblock polymer composed of a first block and a second block is provided. The first block is a statistical copolymer comprising units of a 1,3-diene and more than 50 mol % of ethylene units. The second block is a polyethylene with a melting point above 90° C. and a number-average molar mass greater than or equal to 2000 g/mol and less than or equal to 10 000 g/mol. Such a diblock polymer has improved rheology compared to a statistical copolymer of the same microstructure and of the same macrostructure as the first block of the diblock polymer.

Processes of polymerizing olefin monomers using catalyst systems and catalysts systems that include a procatalyst having a structure according to formula (I): (I).

##STR00001##

Processes of polymerizing olefin monomers using catalyst systems and catalysts systems that include a procatalyst having a structure according to formula (I): (I).

##STR00001##