The present invention provides a heterophasic polypropylene composition with good response to nucleating agents, increased crystallisation temperature, good mechanical properties The present invention further relates to articles made thereof, and the use of the heterophasic polypropylene composition for specific applications and producing these.

The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition comprising the same. The novel ligand compound and the transition metal compound of the present invention may be useful as a catalyst of polymerization reaction for preparing an olefin-based polymer having a low density.

The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition comprising the same. The novel ligand compound and the transition metal compound of the present invention may be useful as a catalyst of polymerization reaction for preparing an olefin-based polymer having a low density.

The present disclosure relates to a Ziegler-Natta catalyst system with self-extinguishing properties suitable for olefin polymerization. The catalyst system of the present disclosure comprises a pro-catalyst, a co-catalyst, and an external donor having a mixture of a selectivity control agent and an activity control agent. The catalyst system of the present disclosure is adapted to prevent the temperature of the polymerization reaction to go beyond the softening temperature of the polymer, thereby exhibiting the self-extinguishing properties.

The present disclosure relates to a Ziegler-Natta catalyst system with self-extinguishing properties suitable for olefin polymerization. The catalyst system of the present disclosure comprises a pro-catalyst, a co-catalyst, and an external donor having a mixture of a selectivity control agent and an activity control agent. The catalyst system of the present disclosure is adapted to prevent the temperature of the polymerization reaction to go beyond the softening temperature of the polymer, thereby exhibiting the self-extinguishing properties.

The invention is directed to a beta nucleated heterophasic propylene copolymer composition (HPPC).

The invention is directed to a beta nucleated heterophasic propylene copolymer composition (HPPC).

A polyethylene-based composition may include an ethylene-based copolymer produced from ethylene and one or more C3-C10 alpha olefin comonomers, wherein the ethylene-based copolymer has: a density ranging from 945 kg/m.sup.3 to 961 kg/m.sup.3 according to ASTM D792, a melt flow rate (MFR.sub.2) ranging from 0.5 g/10 min to 3.0 g/10 min according to ASTM D1238 at 190° C./2.16 kg, a molecular weight distribution (Mw/Mn) ranging from 3 to 25, and a stress exponent (SEx) ranging from 1.0 to 1.8.

A polyethylene-based composition may include an ethylene-based copolymer produced from ethylene and one or more C3-C10 alpha olefin comonomers, wherein the ethylene-based copolymer has: a density ranging from 945 kg/m.sup.3 to 961 kg/m.sup.3 according to ASTM D792, a melt flow rate (MFR.sub.2) ranging from 0.5 g/10 min to 3.0 g/10 min according to ASTM D1238 at 190° C./2.16 kg, a molecular weight distribution (Mw/Mn) ranging from 3 to 25, and a stress exponent (SEx) ranging from 1.0 to 1.8.

An ethylene-α-olefin copolymer capable of implementing formation of a film having excellent slipperiness and suppressed fish eyes, a method of producing the ethylene-α-olefin copolymer, an ethylene-based resin composition containing the ethylene-α-olefin copolymer, and a film containing the ethylene-α-olefin copolymer or the ethylene-based resin composition. An ethylene-α-olefin copolymer according to the present invention has: a monomer unit (1) based on ethylene; and a monomer unit (2) based on an α-olefin having 3 to 20 carbon atoms, wherein a branching parameter is 0.70 to 0.90, and a light scattering area ratio is 1.60 to 3.60.