Sang Yull
Sang Yull Kim, Seoul KR
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20090221771 | PROCESS FOR POLYMERIZATION OR COPOLYMERIZATION OF ETHYLENE - Provided is a process for polymerization and copolymerization of ethylene, specifically comprising carrying out polymerization or copolymerization ethylene in the presence of (a) a solid complex titanium catalyst which is produced by the process comprising: (i) preparing a magnesium compound solution by contacting a halogenated magnesium compound and an alcohol for allowing a reaction; (ii) reacting the resulted magnesium compound solution with an ester compound having at least one hydroxyl group and a silicon compound having at least one alkoxy group; (iii) reacting the resulted solution with a mixture of a titanium compound and a silicon compound to obtain a solid titanium catalyst component; (iv) washing the resulted solid titanium catalyst component with a halogenated saturated hydrocarbon compound; and (v) further reacting the washed solid titanium catalyst component with a titanium compound to obtain a solid complex titanium catalyst, and (b) an organometallic compound from Group II or III of Periodic table of elements. According to the present invention, it is possible to provide a process for polymerization or copolymerization of ethylene in which the catalyst activity is improved and a polymer of high bulk density is provided, with the use of a catalyst prepared by a simple process. | 09-03-2009 |
Sang Yull Kim, Chungcheongnam-Do KR
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20120172551 | SOLID CATALYST FOR PROPYLENE POLYMERIZATION AND A METHOD FOR PREPARATION OF POLYPROPYLENE USING THE SAME - A solid catalyst for propylene polymerization includes titanium, magnesium, halogen and a maleate compound as an internal electron donor. A method for preparing propylene using the catalyst is also described. According to the present invention, it is possible to prepare polypropylene having a wide molecular weight distribution. | 07-05-2012 |
20130237406 | SOLID CATALYST FOR THE POLYMERIZATION OF PROPYLENE, AND METHOD FOR PREPARING SAME - Provided are a solid catalyst for propylene polymerization and a method for preparing the same, specifically a solid catalyst for propylene polymerization which does not contain any environmentally harmful material and can produce a polypropylene having excellent stereoregularity with a high production yield, and a method for preparing the catalyst. | 09-12-2013 |
20140005345 | SOLID CATALYST FOR PROPYLENE POLYMERIZATION AND A METHOD FOR PREPARATION OF POLYPROPYLENE | 01-02-2014 |
Sang Yull Kim, Seosan-Si KR
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20120264593 | MANUFACTURING METHOD OF SOLID CATALYST FOR PROPYLENE POLYMERIZATION - Disclosed is a method for preparing a solid catalyst for propylene polymerization, specifically to a method for preparing a solid catalyst for propylene polymerization which can produce a polypropylene having high melt flow rate, a wide molecular distribution and excellent stereoregularity with a high production yield. | 10-18-2012 |
20120277389 | SOLID CATALYST FOR PROPYLENE POLYMERIZATION AND A METHOD FOR PREPARATION OF POLYPROPYLENE USING THE SAME - Provided are a solid catalyst for propylene polymerization which includes titanium, magnesium, halogen and an internal electron donor mixture of two or more compounds wherein the internal electron donor mixture includes at least one selected from the bicycloalkanes or bicycloalkenes and at least one selected from diethers and succinates, and a method for preparing propylene using the same. As disclosed, it is possible to prepare polypropylene having an excellent stereoregularity with a high production yield. | 11-01-2012 |
20130017946 | PREPARATION METHOD OF SOLID CATALYST FOR PROPYLENE POLYMERIZATION AND CATALYST PREPARED THEREBYAANM Kim; Sang YullAACI Seosan-siAACO KRAAGP Kim; Sang Yull Seosan-si KRAANM Lee; Jin WooAACI Seosan-siAACO KRAAGP Lee; Jin Woo Seosan-si KRAANM Kim; Eun IlAACI DaejeonAACO KRAAGP Kim; Eun Il Daejeon KRAANM Park; Joon RyeoAACI SeoulAACO KRAAGP Park; Joon Ryeo Seoul KR - Disclosed are a method for preparing a solid catalyst for propylene polymerization and a catalyst prepared thereby. Specifically, disclosed are a method for preparing a solid catalyst for propylene polymerization which can prepare polypropylene having excellent stereoregularity with a high production yield by using silane compounds and bicycloalkanedicarboxylate or bicycloalkenedicarboxylate as an internal electron donor, and a catalyst prepared thereby method for preparing polypropylene using the same. | 01-17-2013 |
20140005038 | MANUFACTURING METHOD OF SOLID CATALYST FOR PROPYLENE POLYMERIZATION | 01-02-2014 |