摘要:
The present invention provides a method for producing homo- and co-polymers of ethylene, or more particularly a method for producing homo- and co-polymers of ethylene in the presence of (a) a solid titanium catalyst produced by preparing a magnesium solution by contact-reacting a halogenated magnesium compound with an alcohol; reacting thereto an ester compound having at least one hydroxyl group and a silicon compound having at least one alkoxy group; and adding a mixture of a titanium compound and a silicon compound; (b) organometallic compounds of Group II or III of the Periodic Table; and (c) a cyclic nitrogen compound. The catalyst for homo- and co-polymerization of ethylene, produced according to the present invention, exhibits high activity, and the polymers produced by the method of the present invention by using said catalyst have the advantages of exhibiting high bulk densities and narrow molecular weight distributions.
摘要:
A method for polymerization and copolymerization of ethylene is disclosed. The polymerization is carried out in the presence of a preactivated titanium solid complex catalyst supported on a carrier containing magnesium. The resulting polymers have the advantage of high bulk density and broad molecular weight distribution.
摘要:
The present invention relates to a method for producing a polymer and copolymer of ethylene, and more particularly to a method for producing an ethylene polymer and copolymer by reacting a compound of an organic metal of Group 2, 12, or 13 on the periodic table of elements with an alkoxy silane compound in the presence of a titanium catalyst, the said titanium catalyst being produced by a process of preparing a magnesium compound by contact-reacting a halogenated magnesium compound and alcohol, of reacting the said solution with an ester compound which contains at least one hydroxy group and a silicon compound containing an alkoxy group, and also of reacting it with a solid matter obtained by reaction of a mixture of a titanium compound and a silicon compound with a titanium compound. The catalyst used in polymerization and copolymerization of ethylene in the present invention is high in catalytic activity, and the polymer produced by the use of this catalyst has the merits of a high bulk density and a narrow molecular weight distribution.
摘要:
A method of making an olefin polymerization catalyst is disclosed. The method first combines a magnesium halide with an alcohol, then adds a hydroxylated ester and a silicon alkoxide, followed by a titanium compound and another silicon compound to result in a solid composition. This solid composition is then reacted with an aluminum compound and an alkyl halide, followed by reaction with a second titanium compound which may be the same as or different from the first. The second silicon compound is preferably a silicon halide, and the titanium compounds are preferably halides and alkoxides. The aluminum compounds preferably have chloride and alkyl ligands bonded to them.
摘要:
A solid titanium complex catalyst for polymerization and copolymerization of ethylene is prepared by the process that includes: (1) preparing a magnesium solution by reacting a halogenated magnesium compound with an alcohol; (2) reacting the magnesium solution with an ester compound having at least one hydroxyl group and a silicon compound having an alkoxy group to produce a magnesium composition; and (3) producing a solid titanium catalyst by reacting the magnesium composition solution with a mixture of a titanium compound and a haloalkane compound; and optionally reacting the solid titanium catalyst with an additional titanium compound.
摘要:
The present invention relates to a catalyst for polymerization and co-polymerization of ethylene. More particularly, the present invention relates to a solid titanium catalyst containing magnesium, wherein said catalyst is produced by preparing a magnesium solution by contact-reacting a halogenated magnesium compound with alcohol; reacting said solution with an ester compound having at least one hydroxy group, or a phosphorous compound and a silicon compound having alkoxy groups; producing a solid component with an adjusted particle morphology by adding a mixture of a titanium compound and a silicon compound; reacting the same with an aluminum compound; and then reacting the same with a titanium compound, or a titanium compound and a vanadium compound. As a result, the catalyst of the present invention has high catalytic activity with excellent catalyst morphology.
摘要:
The present invention relates to a catalyst for homo- or co-polymerization of ethylene, or more particularly to a solid titanium catalyst supported on a magnesium-containing carrier, having high catalytic activity and excellent polymerization properties, which can provide polymers of high bulk density and reduce the amount of polymers dissolvable in a medium during polymerization.
摘要:
The present invention relates to a method for preparing a solid titanium catalyst for olefin polymerization. The method for preparing a solid titanium catalyst for olefin polymerization according to the present invention comprises: preparing a magnesium compound solution by dissolving magnesium halide compound in a solvent mixture of cyclic ether and one or more of alcohol; preparing a carrier by adding titanium halide compound to said magnesium compound solution, then elevating the temperature of the solution and aging the solution to precipitate particles, and then adding titanium halide compound thereto for further reaction; preparing a catalyst by reacting said carrier with titanium compound and electron donor; and washing said catalyst with halogenated saturated hydrocarbon. According to the method of the present invention, a catalyst having high activity can be obtained and polyolefin produced by using the catalyst prepared by the method of the present invention has high stereoregularity, relatively easily compared with the conventional method.
摘要:
The present invention relates to a method for preparing a solid titanium catalyst for olefin polymerization. The method for preparing a solid titanium catalyst for olefin polymerization according to the present invention comprises: preparing a magnesium compound solution by dissolving magnesium halide compound in a solvent mixture of cyclic ether and one or more of alcohol; preparing a carrier by adding titanium halide compound to said magnesium compound solution, then elevating the temperature of the solution and aging the solution to precipitate particles, and then adding titanium halide compound thereto for further reaction; preparing a catalyst by reacting said carrier with titanium compound and electron donor; and washing said catalyst with halogenated saturated hydrocarbon. According to the method of the present invention, a catalyst having high activity can be obtained and polyolefin produced by using the catalyst prepared by the method of the present invention has high stereoregularity, relatively easily compared with the conventional method.