摘要:
A catalyst component for ethylene polymerization, comprising an organic silicon compound of the formula (I), below wherein R1 is chosen from C3-C20 aliphatic hydrocarbyl groups, and is substituted with at least one substituent chosen from halogens, C1-C6 acyloxy groups, epoxy, amino, C1-C6 alkylamino groups, di(C1-C6 alkyl)amino groups, C1-C6 alkoxy groups, and oxo group; R2, R3 and R4, which may be the same or different, are each chosen from C1-C10 aliphatic hydrocarbyl, C3-C10 alicyclic hydrocarbyl, C6-C10 aryl, C7-C10 aralkyl, and C7-C10 alkaryl groups. A process for preparing the catalyst component and an active catalyst comprising the catalyst component and useful in polymerization, such as ethylene polymerization.
摘要:
The present invention relates to a catalyst component and a catalyst for olefin polymerization. The catalyst component utilizes magnesium halide and silica as composite support, and the particle morphology thereof can be improved by regulating the ratio of magnesium halide to silica. Further, the purpose of stabilizing the rate of catalytic polymerization reaction and improving the particle morphology of polymer so as to meet the requirements on catalyst performance of various polymerization processes can be achieved through the combination of the supports of the catalyst. In the meantime, when used in the polymerization of propylene, the catalyst of the present invention exhibits a relatively high polymerization activity and high stereospecificity.
摘要:
The present invention provides a catalyst component for ethylene polymerization, a process for preparing the same, a catalyst comprising the same, and a process for polymerizing ethylene using the catalyst. The catalyst component comprises a reaction product, supported on an inorganic oxide support, of a magnesium complex, a titanium compound, an alcohol compound, and an organoaluminum compound, wherein said magnesium complex is formed by dissolving a magnesium halide in a solvent system comprising an organic epoxy compound and an organo phosphorus compound. The catalyst according to the invention is especially suitable for slurry phase polymerization of ethylene. The catalyst according to the present invention has high catalytic activity, and a good hydrogen response, with the resultant polymer having a more uniform particle size diameter and a narrow particle size distribution.
摘要:
The present invention relates to a catalyst component for ethylene polymerization, which comprises a reaction product of a magnesium complex, at least one titanium compound, at least one alcohol compound, at least one silicon compound, and optionally an organic aluminum compound. The silicon compound is an organic silicon compound having a general formula R1xR2ySi(OR3)2, in which R1 and R2 are independently a hydrocarbyl or a halogen, R3 is a hydrocarbyl, 0≦x≦2, 0≦y≦2, 0≦z≦4, and x+y+z=4. The present invention further relates to a method for the preparation of the catalyst component and to a catalyst comprising the same. The catalysts according to the invention have virtues such as high catalytic activity, good hydrogen response, and narrow particle size distribution of polymer, and are especially suitable for a slurry process of ethylene polymerization and a combined process of ethylene polymerization, which requires a high activity of catalyst.
摘要翻译:本发明涉及一种用于乙烯聚合的催化剂组分,其包括镁络合物,至少一种钛化合物,至少一种醇化合物,至少一种硅化合物和任选的有机铝化合物的反应产物。 硅化合物是具有通式R 1 x R 2 y Si(OR 3)2的有机硅化合物,其中R 1和R 2独立地是烃基或卤素,R 3是烃基,0和n 1; x和n 1; 2,0和n 1; y和n 1; z≦̸ 4,x + y + z = 4。 本发明还涉及制备催化剂组分的方法和包含该催化剂组分的催化剂。 根据本发明的催化剂具有诸如高催化活性,良好的氢响应和聚合物的窄粒度分布等优点,并且特别适用于乙烯聚合和乙烯聚合的组合方法的浆料方法,其需要高活性 的催化剂。
摘要:
The present invention provides a catalyst component for ethylene polymerization, a process for preparing the same, a catalyst comprising the same, and a process for polymerizing ethylene using the catalyst. The catalyst component comprises a reaction product, supported on an inorganic oxide support, of a magnesium complex, a titanium compound, an alcohol compound, and an organoaluminum compound, wherein said magnesium complex is formed by dissolving a magnesium halide in a solvent system comprising an organic epoxy compound and an organo phosphorus compound. The catalyst according to the invention is especially suitable for slurry phase polymerization of ethylene. The catalyst according to the present invention has high catalytic activity, and a good hydrogen response, with the resultant polymer having a more uniform particle size diameter and a narrow particle size distribution.
摘要:
A catalyst component for ethylene polymerization, comprising an organic silicon compound of the formula (I), below wherein R1 is chosen from C3-C20 aliphatic hydrocarbyl groups, and is substituted with at least one substituent chosen from halogens, C1-C6 acyloxy groups, epoxy, amino, C1-C6 alkylamino groups, di(C1-C6 alkyl)amino groups, C1-C6 alkoxy groups, and oxo group; R2, R3 and R4, which may be the same or different, are each chosen from C1-C10 aliphatic hydrocarbyl, C3-C10 alicyclic hydrocarbyl, C6-C10 aryl, C7-C10 aralkyl, and C7-C10 alkaryl groups. A process for preparing the catalyst component and an active catalyst comprising the catalyst component and useful in polymerization, such as ethylene polymerization.
摘要:
The present invention relates to a catalyst component for ethylene polymerization, which comprises a reaction product of a magnesium complex, at least one titanium compound, at least one alcohol compound, at least one silicon compound, and optionally an organic aluminum compound. The silicon compound is an organic silicon compound having a general formula R1xR2ySi(OR3)z, in which R1 and R2 are independently a hydrocarbyl or a halogen, R3 is a hydrocarbyl, 0≦x≦2, 0≦y≦2, 0≦z≦4, and x+y+z=4. The present invention further relates to a method for the preparation of the catalyst component and to a catalyst comprising the same. The catalysts according to the invention have virtues such as high catalytic activity, good hydrogen response, and narrow particle size distribution of polymer, and are especially suitable for a slurry process of ethylene polymerization and a combined process of ethylene polymerization, which requires a high activity of catalyst.
摘要翻译:本发明涉及一种用于乙烯聚合的催化剂组分,其包括镁络合物,至少一种钛化合物,至少一种醇化合物,至少一种硅化合物和任选的有机铝化合物的反应产物。 硅化合物是具有通式R1xR2ySi(OR3)z的有机硅化合物,其中R 1和R 2独立地是烃基或卤素,R 3是烃基,0 <= x <= 2,0 <= y < 2,0 <= z <= 4,x + y + z = 4。 本发明还涉及制备催化剂组分的方法和包含该催化剂组分的催化剂。 根据本发明的催化剂具有诸如高催化活性,良好的氢响应和聚合物的窄粒度分布等优点,并且特别适用于乙烯聚合和乙烯聚合的组合方法的浆料方法,其需要高活性 的催化剂。
摘要:
The present invention relates to a catalyst component and a catalyst for olefin polymerization. The catalyst component utilizes magnesium halide and silica as composite support, and the particle morphology thereof can be improved by regulating the ratio of magnesium halide to silica. Further, the purpose of stabilizing the rate of catalytic polymerization reaction and improving the particle morphology of polymer so as to meet the requirements on catalyst performance of various polymerization processes can be achieved through the combination of the supports of the catalyst. In the meantime, when used in the polymerization of propylene, the catalyst of the present invention exhibits a relatively high polymerization activity and high stereospecificity.
摘要:
This invention relates to an three-constituent adduct of a metallocene.an ether.an metal halide having the general formula of Cp'MQ.sub.2.RXR'.nM'Q.sub.2/n, where Cp' is a substituted or an unsubstituted dicyclopentadienyl, M is zirconium or titanium, RXR' is tetrahydrofuran or diethylether, M' is alkali metal or alkali earth metal, n=1 or 2. The adduct can be exposed to air for several hours or stored in nitrogen atmosphere for a long period of time, which is prepared by means of a simple and convenient process without further separation and purification and used directly as a catalyst for polymerization of olefins.