A plasticizer may be suitable for resins and contain an amorphous propylenic polymer having a weight-average molecular weight (Mw), measured according to a GPC method, in a range of from 5,000 to 30,000 and having a molecular weight distribution (Mw/Mn) of 3.0 or less. The amorphous propylenic polymer may be a propylene homopolymer

The present invention relates to melt-blown webs having no shots and improved barrier properties, whereby the melt-blown webs are made of a visbroken metallocene-catalyzed propylene homopolymer composition with specified melting temperature T.sub.m, content of 2,1 erythro regiodefects and molecular weight distribution (MWD).

The present invention relates to melt-blown webs having no shots and improved barrier properties, whereby the melt-blown webs are made of a visbroken metallocene-catalyzed propylene homopolymer composition with specified melting temperature T.sub.m, content of 2,1 erythro regiodefects and molecular weight distribution (MWD).

The present invention relates to melt-blown webs having no shots and improved barrier properties, whereby the melt-blown webs are made of a visbroken metallocene-catalyzed propylene homopolymer composition with specified melting temperature T.sub.m, content of 2,1 erythro regiodefects and molecular weight distribution (MWD).

Polyolefin composition comprising high density polyethylene, polyolefin elastomer and polypropylene, wherein the polypropylene is selected from homopolymer PP or impact PP and wherein the amount of high density polyethylene is more than 40% by weight of the total amount of high density polyethylene, polyolefin elastomer and impact or homopolymer polypropylene and wherein the total amount of high density polyethylene, polyolefin elastomer and polypropylene is 100% by weight and wherein the high density polyethylene has a density in the range from 940 to 960 kg/m3.

Polyolefin composition comprising high density polyethylene, polyolefin elastomer and polypropylene, wherein the polypropylene is selected from homopolymer PP or impact PP and wherein the amount of high density polyethylene is more than 40% by weight of the total amount of high density polyethylene, polyolefin elastomer and impact or homopolymer polypropylene and wherein the total amount of high density polyethylene, polyolefin elastomer and polypropylene is 100% by weight and wherein the high density polyethylene has a density in the range from 940 to 960 kg/m3.

Provided are a heterophasic propylene polymerization material and an olefin polymer having a small high-boiling-point component amount index (FOG). The heterophasic propylene polymerization material satisfies the following formula (3): (X2×Y2)/Z2≤7.0 (3) wherein X2 represents a cold xylene soluble component amount (mass %) of the heterophasic propylene polymerization material; Y2 represents a percentage (%) of a component having a molecular weight of 104.0 or less in terms of polystyrene and contained in a cold xylene soluble component of the heterophasic propylene polymerization material based on all components of the cold xylene soluble component of the heterophasic propylene polymerization material as measured by gel permeation chromatography; and Z2 represents a content (mass %) of a propylene-based copolymer contained in the heterophasic propylene polymerization material and containing a propylene-derived monomer unit and a monomer unit derived from at least one compound selected from the group consisting of ethylene and C4-12 α-olefins.

Provided are a heterophasic propylene polymerization material and an olefin polymer having a small high-boiling-point component amount index (FOG). The heterophasic propylene polymerization material satisfies the following formula (3): (X2×Y2)/Z2≤7.0 (3) wherein X2 represents a cold xylene soluble component amount (mass %) of the heterophasic propylene polymerization material; Y2 represents a percentage (%) of a component having a molecular weight of 104.0 or less in terms of polystyrene and contained in a cold xylene soluble component of the heterophasic propylene polymerization material based on all components of the cold xylene soluble component of the heterophasic propylene polymerization material as measured by gel permeation chromatography; and Z2 represents a content (mass %) of a propylene-based copolymer contained in the heterophasic propylene polymerization material and containing a propylene-derived monomer unit and a monomer unit derived from at least one compound selected from the group consisting of ethylene and C4-12 α-olefins.

The present invention relates to a process for producing a propylene polymer, such as a propylene homopolymer, a propylene-ethylene random copolymer or a heterophasic propylene copolymer using a specific class of metallocene complexes in combination with a cocatalyst system comprising a boron containing cocatalyst and an aluminoxane cocatalyst, preferably in a multistage polymerization process including a gas phase polymerization step.

The present invention relates to a process for producing a propylene polymer, such as a propylene homopolymer, a propylene-ethylene random copolymer or a heterophasic propylene copolymer using a specific class of metallocene complexes in combination with a cocatalyst system comprising a boron containing cocatalyst and an aluminoxane cocatalyst, preferably in a multistage polymerization process including a gas phase polymerization step.