Abstract: The present invention relates to a preparation method for olefin-diene copolymer that comprises polymerizing at least one olefin-based monomer and at least one diene-based monomer in the presence of a catalyst comprising a novel transition metal compound. Using the novel transition metal compound as a catalyst, the preparation method for olefin-diene copolymer according to the present invention can not only acquire high catalytic activity for copolymerization of the olefin and diene monomers to achieve high process efficiency but allow it to easily control the fine-structure characteristics of the copolymer, thereby providing an olefin-diene copolymer having desired properties with ease.

Abstract: Provided is a polyolefin resin composition including: an ultra-high crystalline polypropylene resin, e.g. about 40-80 wt %, having an isotactic index of about 99.5 or higher; a branched polypropylene, e.g., about 10-20 wt %, having a branching index of about 7 or higher; a thermoplastic elastomer, e.g., about 1-20 wt %; an inorganic filler, e.g., about 1-30 wt %; and a fluoroacrylic copolymer-based amide polymer compound, e.g., about 2-6 wt %.

Abstract: Provided is a method of preparing a ZSM-5 catalyst for preparing light olefins including ethylene and propylene through a catalytic cracking of a hydrocarbon mixture of C4 to C7 produced after a naphtha cracking. The method includes (a) forming a gel by aging a mixture solution including a silica precursor and an aluminum precursor; (b) adding a template possibly forming mesopores through a heat treatment, into the gel, stirring and then aging; (c) forming a solid product by crystallizing the aged mixture in step (b); and (d) heat treating the solid product to remove the template. The ZSM-5 catalyst may include micropores and mesopores and may have good physical and chemical properties along with a good pore property. The production yield of the light olefins may be increased.

Abstract: The present disclosure relates to a method for preparing a catalyst for polymerization of polyolefin and a catalyst for polymerization of polyolefin by using the same, and particularly, to a method for preparing a catalyst for polymerization of polyolefin, including: reacting a magnesium halide precursor solution obtained by dissolving magnesium halide in a first alcohol and a first hydrocarbon and a dialkoxy magnesium support obtained by reacting a halogen compound and a second alcohol with metal magnesium, with titanium tetrachloride and an internal electron donor in the presence of a second hydrocarbon. The present disclosure may provide a catalyst for polymerization of two-component magnesium compound supported polyolefin showing high activity by using the above-described dialkoxy magnesium supported catalyst.

Abstract: Disclosed is a method for preparing a solid catalyst for polymerization of polypropylene. The method includes: a) reacting a magnesium halide compound with alcohol and then adding a phthalic acid compound thereto to prepare a magnesium compound solution; b) mixing an aliphatic or alicyclic hydrocarbon solvent with an aromatic hydrocarbon solvent to prepare a mixed solvent, dispersing a titanium compound in the mixed solvent, and then reacting the titanium compound dispersed with the magnesium compound solution prepared in step a), and heating to produce a support; and c) reacting the support with the titanium used before disperse in step b) compound and an electron donor to obtain a solid product. When a catalyst prepared by the present disclosure is used, polypropylene with high activity and high bulk density characteristics may be prepared.

Abstract: Disclosed is a method for preparing a catalyst for polymerization of polyolefin. The preparation method according to the present disclosure includes a) dissolving a magnesium halide compound in a first alcohol and a first hydrocarbon and then adding an alkoxysilane compound thereto to prepare a magnesium halide precursor solution; b) reacting a second alcohol with metal magnesium in the presence of a halogen compound to prepare a dialkoxy magnesium support; and c) reacting the magnesium halide precursor solution and the dialkoxy magnesium support with titanium tetrachloride and an internal electron donor in the presence of a second hydrocarbon. The present disclosure may provide a catalyst for polymerization of two-component magnesium compound supported polyolefin showing high activity.

Abstract: Disclosed is a thermoplastic polyolefin (TPO) nanocomposite composition, more particularly a TPO nanocomposite composition including a polypropylene resin, a polyethylene resin, a rubber resin, a nanoclay master batch and a glass bubble master batch. Since the disclosed TPO nanocomposite composition has low specific gravity and superior gloss reducing effect and scratch resistance, it may be usefully applied to light automobile parts, uncoated automobile exterior parts, or the like.

Abstract: Disclosed herein are a polypropylene resin composition having excellent melt tension and a method for preparing the same. More particularly, a high melt tension polypropylene resin composition prepared by stepwise reaction of existing polypropylene resin with at least two organic peroxides having different half-life distributions, as well as a method for preparation thereof are described.

Abstract: Provided is a polyolefin resin composition including: an ultra-high crystalline polypropylene resin, e.g. about 40-80 wt %, having an isotactic index of about 99.5 or higher; a branched polypropylene, e.g., about 10-20 wt %, having a branching index of about 7 or higher; a thermoplastic elastomer, e.g., about 1-20 wt %; an inorganic filler, e.g., about 1-30 wt %; and a fluoroacrylic copolymer-based amide polymer compound, e.g., about 2-6 wt %.

Abstract: Disclosed herein are a polypropylene resin composition having excellent melt tension and a method for preparing the same. More particularly, a high melt tension polypropylene resin composition prepared by stepwise reaction of existing polypropylene resin with at least two organic peroxides having different half-life distributions, as well as a method for preparation thereof are described.

Abstract: Disclosed is a thermoplastic polyolefin (TPO) nanocomposite composition, more particularly a TPO nanocomposite composition including a polypropylene resin, a polyethylene resin, a rubber resin, a nanoclay master batch and a glass bubble master batch. Since the disclosed TPO nanocomposite composition has low specific gravity and superior gloss reducing effect and scratch resistance, it may be usefully applied to light automobile parts, uncoated automobile exterior parts, or the like.

Abstract: The present invention relates to a multinuclear metallocene catalyst for olefin polymerization and a process for olefin polymerization using the same, in which the multinuclear metallocene catalyst for olefin polymerization comprises, as a main catalyst, a transition metal compound that contains at least two metal atoms in the groups III to X of the periodic table as central metals and a ligand having a cyclopentadienyl structure bridging between the two metal atoms, and, as a cocatalyst, an aluminoxane compound, an organoaluminum compound or a bulky compound reactive to the transition metal compound to impart a catalytic activity to the transition metal compound.

Abstract: There is provided olefin-based cross-linked thermoplastic elastomers and a preparation method thereof. The TPE comprises a thermoplastic polyolefin resin; an ethylene-propylene-dien rubber; an ethylene-octene copolymer; and a phenolic cross-linking agent. The TPE shows good tensile strength, tension set and compression set.