摘要:
Disclosed are a sphere-like super-macroporous mesoporous material, a polyolefin catalyst, and a preparation method therefor and an olefin polymerization process. A sphere-like super-macroporous material has a two-dimensional hexagonal ordered pore channel structure; a mesoporous material has an average pore size of 10 nm to 15 nm, a specific surface area of 300 m 2 /g to 400 m 2 /g, and an average particle size of 1 µm to 3 µm; based on the total mass of the mesoporous material, the mass content of water in the mesoporous material is
摘要:
The present invention provides a copolymer of an olefin and an unsaturated carboxylic acid or an unsaturated carboxylic acid derivative, said copolymer being a spherical and/or spherical-like polymer. The copolymer provided by the invention exhibits a good morphology and has good prospects in industrial use.
摘要:
The present invention relates to a diimine metal complex represented by Formula I, a preparation method therefor, and application thereof. The complex is used as a main catalyst in catalysts for olefin polymerization, and can achieve catalytic ethylene polymerization at a high temperature to prepare high molecular weight branched polyethylene.
摘要:
The present invention relates to an amino-imine metal complex represented by Formula I and a preparation method and an application thereof. The complex is used as a main catalyst in catalysts for olefin polymerization, and can catalyze the polymerization of ethylene at a relatively high temperature to prepare branched polyethylene having high molecular weight.
摘要:
Disclosed are a method for preparing an olefin-olefinic alcohol copolymer and an olefin-olefinic alcohol copolymer prepared by the method. The catalyst used in the method for preparing the olefin-olefinic alcohol copolymer comprises a diimine metal complex as shown in Formula I. The spherical and/or spherical-like polymer prepared according to a preferred embodiment of the preparation method has good prospects in industrial applications.
摘要:
The invention relates to the technical field of heterogeneous catalytic olefin polymerization, and discloses a polyolefin catalyst, its preparation and its us. A method for preparing the polyolefin catalyst comprises: (i) providing a thermally activated mesoporous material, with the thermal activation treatment being performed at a temperature of 300 to 900 °C for a period of time of 3 to 48 hours; (ii) under an inert atmosphere, (iia) conducting impregnation treatment of the thermally activated mesoporous material with a solution containing a magnesium component and then with a solution containing a titanium component, (iib) conducting impregnation treatment of the thermally activated mesoporous material with a solution containing a titanium component and then with a solution containing a magnesium component, or (iic) conducting co-impregnation treatment of the thermally activated mesoporous material with a solution containing both a titanium component and a magnesium component, to obtain a slurry to be sprayed; and (iii) spray drying the slurry to be sprayed from step (ii), to obtain a solid polyolefin catalyst component. When used in olefin polymerization, the polyolefin catalysts prepared by using the method provided by the invention have high catalytic activities, and polyolefin products having a narrow molecular weight distribution and an excellent melt index can be obtained.
摘要:
A magnesium halide solution is disclosed. The magnesium halide solution comprises a magnesium halide, an oxygen-containing organic titanium compound, a hydroxyl-containing compound, and an organic solvent. The magnesium halide solution further comprises an organic heterocyclic compound. The organic solvent is a hydrocarbon and/or a halogenated hydrocarbon. The organic heterocyclic compound is at least one selected from a group consisting of a sulphur-containing organic heterocyclic compound, a nitrogen-containing organic heterocyclic compound, and an organic epoxy compound. The magnesium halide solution has a good stability, and can be used for preparing a catalyst for olefin polymerization and copolymerization reactions. The raw material of the magnesium halide solution is cheap and easy to be obtained. The preparing method is easy to be performed and is environment-friendly.
摘要:
The invention provides an olefin-olefinic alcohol copolymer and a preparation method thereof, said copolymer comprising a spherical and/or spherical-like polymer. The copolymer provided by the invention exhibits a good morphology and has good prospects in industrial use.