Patent application number | Description | Published |
20090215611 | PREPARATION METHOD OF CATALYST FOR ETHYLENE POLYMERIZATION AND COPOLYMERIZATION - Provided is a preparation method of a catalyst for ethylene (co)polymerization, comprising the following steps: (1) preparing a magnesium compound solution by contact-reacting a halogenated magnesium compound with a mixed solvent of cyclic ether and at least one alcohol; (2) reacting the resulted magnesium compound solution from the above step (1) with a silicon compound having at least one alkoxy group; (3) preparing a support by adding a titanium compound to the resulted product from the step (2); and (4) reacting thus obtained support with a titanium compound and optionally a monoester compound, resulting in a catalyst. Catalysts prepared according to the present invention have a regulated particle shape, and their particle size can be easily adjusted. Therefore, with such catalyst, it is possible to produce polymers having high bulk density at high production yield. | 08-27-2009 |
20100105543 | PREPARATION METHOD OF A SOLID TITANIUM CATALYST FOR OLEFIN POLYMERIZATION - A preparation method of a solid titanium catalyst for olefin polymerization characteristically comprises the steps of: (1) obtaining a magnesium compound solution by dissolving a magnesium halide compound in an oxygen-containing solvent that is a mixed solvent of a cyclic ether and at least one of alcohols; (2) preparing a carrier by primarily reacting the obtained magnesium compound solution with a titanium halide compound at −10-30° C., then raising a temperature or aging so as to obtain particles, and secondly reacting the particles with a titanium halide compound; (3) preparing a catalyst by reacting the carrier with a titanium halide compound and an electron donor of phthalic acid dialkylester having a C9-13 alkyl group; and (4) washing the prepared catalyst with a hydrocarbon solvent at 40-200° C. | 04-29-2010 |
20100130707 | CATALYST FOR POLYMERIZATION OF PROPYLENE AND METHOD FOR POLYMERIZATION OF PROPYLENE USING THE SAME - Provided are a catalyst for polymerization of propylene and a method for polymerization of propylene using the same. Specifically, provided are a catalyst for propylene polymerization which comprises titanium tetrachloride, an internal electron donor, and dialkoxy magnesium particles, as a carrier, obtained from the reaction of a halogen compound or nitrogen-halogen compound as a reaction initiator, metal magnesium and an alcohol, and a method for propylene polymerization using the same. | 05-27-2010 |
20100172820 | METHOD OF PREPARATION OF SPHERICAL SUPPORT FOR OLEFIN POLYMERIZATION CATALYST - Provided is a method of preparation of a spherical support for an olefin polymerization catalyst. Specifically, provided is a method of preparation of a support which can be used in preparation of an olefin polymerization catalyst, wherein, MgX(I) (X=halogen atom) is prepared by reacting a reaction initiator, nitrogen halide, and magnesium metal, and then magnesium metal and alcohol are reacted in the presence of the MgX, thereby resulting a smooth-surfaced spherical dialkoxy magnesium support having a uniform particle size distribution. | 07-08-2010 |
20100172821 | METHOD OF PREPARATION OF SPHERICAL SUPPORT FOR OLEFIN POLYMERIZATION CATALYST - Provided is a method of preparation of dialkoxy magnesium that is used as a support for an olefin polymerization catalyst for polyolefin preparation. Specifically, provided is a method of preparation of a support for an olefin polymerization catalyst, which comprises preparation of dialkoxy magnesium by reacting magnesium metal with alcohol in the presence of a reaction initiator, wherein bromine is used as the reaction initiator so as to obtain spherical dialkoxy magnesium. | 07-08-2010 |
20100298509 | METHOD OF PRODUCING DIALKOXYMAGNESIUM SUPPORT FOR CATALYST FOR OLEFIN POLYMERIZATION, METHOD OF PRODUCING CATALYST FOR OLEFIN POLYMERIZATION USING THE SAME AND METHOD OF POLYMERIZING OLEFIN USING THE SAME - Disclosed are a method for producing a dialkoxymagnesium support for catalyst for olefin polymerization, a method of producing catalyst for olefin polymerization using the dialkoxymagnesium support and a method of polymerizing olefin using the catalyst. By using the method for producing a support according to the present invention, the content of large particles in the dialkoxymagnesium support can be controlled and the particle can have spherical shape, so the catalyst produced by using the support have high activity and stereoregularity, and high bulk density, thereby making it possible to be applied to the commercial processes. | 11-25-2010 |
20110166394 | METHOD FOR CONTROLLING SIZE OF SPHERICAL CARRIER FOR OLEFIN POLYMERIZATION CATALYST - Provided is a method for controlling the size of a dialkoxy magnesium carrier used in preparation of an olefin polymerization catalyst. Specifically, provided is a method for controlling the size of a dialkoxy magnesium carrier for preparation of an olefin polymerization catalyst which includes preparation of a dialkoxy magnesium carrier by reacting metal magnesium with an alcohol in the presence of an reaction initiator such as magnesium halide or nitrogen halide, by adding the metal magnesium and the alcohol to the reaction in divided portion(s) of 1-3. | 07-07-2011 |
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 |
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 |
20130150538 | PRODUCTION METHOD FOR A SPHERICAL CARRIER FOR AN OLEFIN POLYMERIZATION CATALYST, AND A SOLID CATALYST USING THE SAME AND PROPYLENE POLYMERS - The provided are a method for preparing a spherical support for a catalyst for olefin polymerization and a solid catalyst prepared using the support, and a propylene polymer obtained by using the solid catalyst. Specifically, a method for preparing a spherical support which can be used for preparation of a propylene polymerization catalyst, particularly a dialkoxy magnesium support, comprising reacting metal magnesium and an alcohol in the presence of a halogenated nitrogen compound as a reaction initiator and adjusting the initial reaction temperature to the range of 20-25° C. and the aging temperature to the range of 55-65° C.; a solid catalyst for olefin polymerization prepared by using the above-obtained support; and a propylene polymer having a high bulk density prepared by using the above-obtained catalyst are provided. | 06-13-2013 |
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 |
20140005038 | MANUFACTURING METHOD OF SOLID CATALYST FOR PROPYLENE POLYMERIZATION | 01-02-2014 |
20140005345 | SOLID CATALYST FOR PROPYLENE POLYMERIZATION AND A METHOD FOR PREPARATION OF POLYPROPYLENE | 01-02-2014 |
20140303332 | CATALYST FOR OLEFIN POLYMERIZATION AND COPOLYMERIZATION, AND OLEFIN POLYMERIZATION OR COPOLYMERIZATION METHOD USING SAME - The provided is an olefin (co)polymerization catalyst with an excellent catalyst activity, wherein the catalyst component is prepared by using a metallocene compound and titanocene compound or a half-titanocene compound so as to provide polyolefins having a high molecular weight and a low melt index, and also a method for olefin (co)polymerization using said catalyst. | 10-09-2014 |