Patent application number | Description | Published |
20100016535 | 1-Alkene-Acrylate Based Copolymer - The present invention provides 1-alkene-acrylate based copolymer prepared by a method comprising step of a radical polymerization reaction of 1-alkene and acrylate based monomer under presence of a metal oxide or Lewis acid. The 1-alkene-acrylated based copolymer according to the present invention is a random copolymer of 1-alkene and a polar monomer, and an amount of a polar group contained in the copolymer is very high so that the alkene is not crystalline. Accordingly, when the copolymer is processed into a polymer film, a transparency of the polymer is not affected. Due to such a feature, the copolymer can be used for optical products. | 01-21-2010 |
20100096762 | Synthesis Method Of Metal Cyclopentadienide In Bulk - The present invention relates to a synthesis method of metal cyclopentadienide by direct reaction of dicyclopentadiene with a group 1 metal in the presence of an aprotic solvent. Unlike the conventional method depending on retro Diels-Alder reaction of dicyclopentadiene to generate indirectly cyclopentadiene, the method of the present invention favors generation of cyclopentadiene and metal cyclopentadienide as well by adding dicyclopentadiene directly when the reaction temperature reaches in the boiling point of a reaction solvent. | 04-22-2010 |
20120071615 | Bi-Nuclear Metallocene Compound and the Preparation Method of Polyolefin Using the Same - The present invention relates to a binuclear metallocene compound having a new structure that is able to offer various selectivities and activities for copolymers, a preparation method thereof, and a method for preparing a polyolefin using the binuclear metallocene compound. | 03-22-2012 |
20120123078 | METALLOCENE COMPOUND, CATALYST COMPOSITION COMPRISING THE SAME, AND AN OLEFINIC POLYMER PRODUCED USING THE SAME - The present invention relates to a novel metallocene compound, a catalyst composition comprising the same, and to olefinic polymers produced using the same. The metallocene compound according to the present invention and the catalyst composition comprising the same can be used when producing olefinic polymers, have outstanding copolymerisation properties, and can produce olefinic polymers of high molecular weight. In particular, when the metallocene compound according to the present invention is employed, highly heat resistant block copolymers can be produced, and olefinic polymers can be produced which have a high melting point (Tm) even if the comonomer content is increased when producing the olefinic polymer. | 05-17-2012 |
20130296497 | OLEFIN BLOCK COPOLYMER - The present description relates to an olefin block copolymer with excellences in elasticity, heat resistance, and processability. The olefin block copolymer comprises a plurality of blocks or segments, each comprising an ethylene or propylene repeating unit and an α-olefin repeating unit at different mole fractions. The olefin block copolymer comprises polymer chains containing 20 to 100 short-chain branches (SCBs) per 1,000 carbon atoms. A point where a first derivative of the number Y of the SCBs per 1,000 carbon atoms of each polymer chain with respect to the molecular weight X of the polymer chain is 0 exists between the minimum and maximum values of the molecular weight X. | 11-07-2013 |
20130296519 | OLEFIN BLOCK COPOLYMER - The present description relates to an olefin block copolymer with enhanced processability as well as excellences in elasticity and heat resistance, and a preparation method for the same. The olefin block copolymer includes first and second segments, each containing an ethylene or propylene repeating unit and an α-olefin repeating unit at different mole fractions, where the second segment is dispersed in the form of a closed curve as a dispersed phase on the first segment according to a TEM (Transmission Electron Microscope) image. | 11-07-2013 |
20130324689 | 1-ALKENE-ACRYLATE BASED COPOLYMER - The present invention provides ethylene-acrylate based copolymer prepared by a method comprising step of a radical polymerization reaction of ethylene and acrylate based monomer under presence of a metal oxide or Lewis acid. The ethylene-acrylated based copolymer according to the present invention is processed into a polymer film, a transparency of the polymer is not affected. Due to such a feature, the copolymer can be used for optical products. | 12-05-2013 |
20140066288 | METALLOCENE COMPOUND, CATALYST COMPOSITION COMPRISING THE SAME, AND AN OLEFINIC POLYMER PRODUCED USING THE SAME - The present invention relates to a novel metallocene compound, a catalyst composition comprising the same, and to olefinic polymers produced using the same. The metallocene compound according to the present invention and the catalyst composition comprising the same can be used when producing olefinic polymers, have outstanding copolymerisation properties, and can produce olefinic polymers of high molecular weight. In particular, when the metallocene compound according to the present invention is employed, highly heat resistant block copolymers can be produced, and olefinic polymers can be produced which have a high melting point (Tm) even if the comonomer content is increased when producing the olefinic polymer. | 03-06-2014 |
20140094574 | POLYOLEFIN AND PREPARATION METHOD THEREOF - A polyolefin has 1) a density in the range of 0.93 to 0.97 g/cm | 04-03-2014 |
20140114033 | OLEFIN BLOCK COPOLYMERS AND PRODUCTION METHODS THEREOF - The present description relates to olefin block copolymers having excellent elasticity and processability in conjunction with enhanced heat resistance, and to a preparation method thereof. The olefin block copolymers comprise a plurality of blocks or segments that comprise ethylene or propylene repeating units and α-olefin repeating units at different mole fractions from one another, wherein the block copolymer shows peaks at the 2θ of 21.5±0.5° and 23.7±0.5° in a wide-angle x-ray diffraction (WAXD) pattern, and the peak ratio defined by (the peak area at 21.5±0.5°)/(the peak area at 23.7±0.5°) is no more than 3.0. | 04-24-2014 |
20150018502 | METHOD FOR ETHYLENE OLIGOMERIZATION - The present invention relates to a method for ethylene oligomerization. According to the method of the present invention, highly active ethylene oligomerization reaction is possible by using a catalyst system including a novel chromium compound exhibiting high activity for ethylene oligomerization reaction, and therefore, polyethylene can be prepared using a small amount of comonomers or using only ethylene without comonomers. | 01-15-2015 |