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The invention discloses an application of load non- metallocene catalyst in the slurry process for vinyl polymerying, the load non- metallocene catalyst and catalyst promoter forming the catalytic system, the alkene polymerization comprising: vinyl homopolymerization, combined polymerization of vinyl with propylene, butylenes, hexane, octane or norbornene; the catalyst carrier being chosen from: inorganic oxide of metallic oxide from IIA, IIIA, IVA, and IVB groups, or oxided mixture and mixing oxide; the catalyst promoter being chosen from: methylaluoxane, ethylaluoxane, isobutylaluoxane, trimethylaluminum,triethylaluminum,triisobutylaluminum,methylaluoxane-trimethylaluminum or methylaluoxane-triethylaluminum; the mole proportion between the catalyst promoter and catalyst being Al/Ti= 1:1-500. The inventioin is characterized by the less methylaluoxane consumption, stable reaction, easy-to-control polymerization temperature and non still-sticking phenomenon. The produced polyolefine possesses perfect granual shape, and the maximum polymer clamp density can reach 0.385 g/ml.

A method of non- metallocene catalyst loading with high active: the carrier and chemical activating agent reacting with each other to get the modification carrier; dissolving the magnesium compounds into the tetrahydrofuran-alcohol mixing system to form solution, adding the modification carrier into the solution for reaction, filtering, washing, drying and sucting to get the composite carrier; dissolving the non- metallocene catalyst for lkene polymerization into the dissolvent, then reacting with the composite carrier and through process of washing, filtering and drying to get the load non- metallocene catalyst. It can also be: proceeding heating activating treatment before the reaction of carrier with the chemical activating agent; the composite carrier reacting with chemical additive before reacting with catalyst to get the modification composite carrier, the modification composite carrier reacting with catalyst to get the load non- metallocene catalyst. The load catalyst produced in this invention is high active; the load catalyst of high property can be produced with less methylaluoxane; the polyolefine produced with the catalyst prepared in this invention possesses sound granual shape.

This invention relates to a method for preparing catalyst for ethylene homopolymerization or copolymerization with other alpha-olefins. The catalyst comprises at least one Mg composite, at least one Ti compound, at least one organic alcohol compound, and at least one Si compound. The general formula of the Si compound is R1xR2ySi (OR3) z, where R1 and R2 are alkyl or halogen; R3 is alkyl; x is 0-2; y is 0-2; z is 0-4; x + y + z = 4. The catalyst has such advantages as high catalytic activity, high hydrogen sensitivity and narrow particle size distribution of polymer. The catalyst is suitable for slurry polymerization of ethylene, and combined polymerization process where catalyst with high activity is needed.

The invention relates to spherical carriers for an olefin polymerization catalyst and a preparation method. Each spherical carrier comprises reaction products of the following components: (1) magnesium halide which is shown as the general formula MgX2, (2) alcohol compounds which are shown as the general formula ROH, and (3) ethylene oxide compounds which are shown as the general formula (I), wherein in the general formula (I), R2 and R3 are alkyls with a C1-C5 straight chain or branched chain; and hydrogen on the alkyls can be randomly substituted by a halogen atom. The spherical carriers have good particle shapes, adjustable particle sizes and narrow particle size distribution, and the preparation method is simple.

The invention relates to a loaded non-metallocene catalyst and a preparation method and application thereof. The loaded non-metallocene catalyst has the characteristics of simple and practicable preparation method, flexible and adjustable polymerization activity and the like. The invention also relates to the application of the loaded non-metallocene catalyst to the homopolymerisation/copolymerization of olefin. Compared with the prior art, the application has the characteristic of small using amount of a cocatalyst.

The invention relates to a supported non-metallocene catalyst and a preparation method thereof. The supported non-metallocene catalyst is characterized by a simple and practical preparation method, flexible and adjustable polymerization activity and the like. The invention also relates to an application of the supported non-metallocene catalyst in olefin homopolymerization/copolymerization. The application is characterized in that compared with the prior art, the dosage of the catalyst is lower.

The invention relates to a loaded non-metallocene catalyst and a preparation method and application thereof. The loaded non-metallocene catalyst has the characteristics of simple and practicable preparation method, flexible and adjustable polymerization activity and the like. The invention also relates to the application of the loaded non-metallocene catalyst to the homopolymerisation/copolymerization of olefin. Compared with the prior art, the application has the characteristic of small using amount of a cocatalyst.

The invention relates to a loaded non-metallocene catalyst and a preparation method and application thereof. The loaded non-metallocene catalyst has the characteristics of simple and practicable preparation method, flexible and adjustable polymerization activity and the like. The invention also relates to the application of the loaded non-metallocene catalyst to the homopolymerisation/copolymerization of olefin. Compared with the prior art, the application has the characteristic of small using amount of a cocatalyst.

The invention provides a spherical magnesium halide adduct and a preparation method thereof. The method comprises the following steps of: (1) mixing magnesium halide and alcohols except methanol with optional inert liquid media and heating the obtained mixture under stirring until a melt of the magnesium halide adduct is formed; (2) adding the melt of the magnesium halide adduct to cooling media after shearing and dispersing the melt to form spherical solid particles; and (3) carrying out contact reaction on the spherical solid particles and dimethoxy propane in the inert dispersion media. The invention also provides application of the magnesium halide adduct as a catalyst carrier. The magnesium halide adduct has the following beneficial effects: the morphology of particles of the magnesium halide adduct is more regular and is basically spherical; the particle size distribution is more concentrated; basically special-shaped particles do not exist; and the catalyst prepared by adopting the spherical magnesium halide adduct as the catalyst carrier has better hydrogen regulation sensitivity in propylene polymerization reaction.

A catalyst for the polymerization or copdymerization of olefin is composed of Ti-contained solid component A, organoaluminium compound B and organosilicon compound C. Said A is prepared through dissolving magnesium halide in the mixture of organic epoxy compound, organophosphorus compound and inertial diluent, adding educing agent and magnesium halide or its derivatives to educe out Mg/Ti contained deposit, and carrying a surface modifier, a titanium halide or derivative and an electronic doner. It can be used for the polymerization of propene or copolymerization of propene-ethene.

The invention provides a spherical magnesium halide adduct and a preparation method and application thereof. The method comprises the following steps of: (1) mixing magnesium halide, alcohol except methanol, and an optional inert liquid medium, and heating the obtained mixture with stirring to form a magnesium halide adduct melt; (2) performing shear dispersion on the magnesium halide adduct melt, and adding into a cooling medium to form spherical solid particles; (3) performing contact reaction on the spherical solid particles and dimethoxy propane in an inert dispersion medium; and (4) performing contact reaction on a product obtained in the step (3) and a polyol ester compound in the inert dispersion medium. The magnesium halide adduct has a good particle shape, a smooth surface and high liquidity, and special-shaped particles do not exist; and a catalyst prepared by taking the magnesium halide adduct as a catalyst carrier has high hydrogen regulation sensitivity when used for olefin polymerization.

The invention discloses a loading metallocene catalyst composition which is obtained through adopting an alkyl aluminoxane/magnesium chloride/silica gel carrier as a carrier and loading a metallocene catalyst precursor, and a preparation method thereof. The catalyst system consisting of the catalyst composition catalyzes ethylene to polymerize or copolymerize and has high polymerization activity. Compared with a common loading metallocene catalyst with an alkyl aluminoxane/silica gel carrier, the activity can be doubled or more. The carrier is simple to prepare; the prepared loading catalyst granule has good shape and adjustable size; and the obtained polythene powdery material has high stacking density.

The invention relates to a catalyst component used for ethylene polymerization reaction and a catalyst thereof. The catalyst component contains magnesium composite, titanium compound, organic alcoholic compound and boron compound. The organic boron compound is selected from at least one of structural formula 1, structural formula 2 and structural formula 3. The catalyst of the invention is quite applicable for a slurry polymerization process of ethylene, and the catalyst has better hydrogen regulation sensitivity and higher catalytic activity.

The invention relates to a high-activity olefin polymerization catalyst, a preparation method and an application and belongs to the field of olefin polymerization. The high-activity olefin polymerization catalyst is composed of a main catalyst and a cocatalyst and characterized in that the main catalyst is composed of a magnesium halide carrier, a transition metal halide, alcohol which is smaller than C5, alcohol which is larger than C5, an organosilicon compound and an organic phosphorus compound; the mole ratio of the magnesium halide carrier, the transition metal halide, the alcohol which is smaller than C5, the alcohol which is larger than C5, the organosilicon compound and the organic phosphorus compound is 1: (1-40): (0.01-5): (0.01-10): (0.01-10): (0.05-5); and the cocatalyst is an organic aluminum compound. Particles of the catalyst are good in shape, spherical and free from adhering to the wall of a container; and the catalyst is high in activity, good in hydrogen regulation performance and applicable to a slurry polymerization process, a loop polymerization process, a gas phase polymerization process or a combined polymerization process, and a melt flow rate (MFR) of polyethylene can be regulated within a range of 0.1g/10min-600g/10min.

The invention relates to the field of polymers, the invention discloses a catalytic system for olefin- olefin alcohol copolymerization, an olefin-olefin alcohol copolymerization method and a polymer.The catalytic system comprises the following components: (1) a main catalyst which is selected from at least one of the group consisting of metal complexes as shown in formula (I), in the formula (I),R1 and R4 are each selected from a C1-C30 hydrocarbyl group or heterohydrocarbyl group; R2 and R3 are each selected from a hydrogen atom, a chlorine atom, a C1-C20 hydrocarbon group, and the like, and R2 and R3 may be optionally bonded to each other into a ring. M is a Group VIII metal; X is selected from the group consisting of halogen, hydrocarbyl and alkoxy; n is an integer satisfying the valence of the M; 2) a cocatalyst; 3) an olefin; 4) an alkene alcohol; 5) an alkane solvent; and a 6) chain transfer agent; the polymer has a high alcohol content and weight average molecular weight, a narrow molecular weight distribution, and does not contain a carboxylic acid or an alkali metal salt, and the catalyst has better thermal stability and a higher polymerization activity.

The invention provides a preparation method of a catalyst component for olefin polymerization. In the preparation method of the catalyst component, a separation assistant component consists of polyol ester compounds expressed by a general formula (I) and organosilane compounds expressed by the general formula (II) of RIaRIIbSi (ORIII) c; and the separation process of catalyst particles is effectively controlled through combining action of the organosilane compounds and the polyol ester compounds. Compared with the traditional catalyst, the catalyst has greatly improved activity and yield and has little polymer fine powder.

The invention relates to a catalyst component for olefin (co)polymerization, to preparation thereof, to a catalyst comprising the same, and to use thereof in olefin (co)polymerization. The catalyst component of the invention comprises magnesium, titanium, halogen, inner electron donor compound, and alkoxy group derived from a surface modifier, wherein the content of the alkoxy group derived from the surface modifier is in a range of from 0.01 to 3 percent by weight, based on the weight of the catalyst component.

The invention relates to an olefin polymerization catalyst and preparation and application thereof. A main catalyst consists of a carrier, a transition metal halide, an organic alcohol compound and an organosiloxane compound, wherein the molar ratio of the carrier to the transition metal halide to the organic alcohol compound to the organosiloxane compound is 1:(0.01-20):(0.1-6):(0.01-5); and the molar ratio of the transition metal halides in an assistant catalyst and the main catalyst is (30-500):1. In the preparation process, an assistant precipitation agent is added, wherein the assistant precipitation agent is alkane with the carbon atom number of 5 to 20 or cyclane with the carbon atom number of 5 to 20; and the mass ratio of the assistant precipitation agent to the carrier is (5-100):1. The olefin polymerization catalyst has the advantages of suitability for slurry process, gas-phase polymerization technology or combined polymerization technology, high catalyst activity, simple preparation method, low equipment requirement and less environmental pollution.

A catalyst for polymerization or copolymerization of ethylene is prepared through dissolving magnesium halide in organic epoxy compound, organic phosphorus compound or inertial diluent, adding alkane educing aid, porous inertial carrier and halide of Ti, and educing. It is possible to add alcohol compound and/or electron donor. Its advantages are high activity and copolymerizing performance, and high sensitivity to hydrogen regulation.

The invention provides a method for preparing amorphous spherical particle alkoxy magnesium. In the method for preparing the amorphous spherical particle alkoxy magnesium, magnesium powder and mixed alcohol are used as raw materials, halogen monomer and/or inorganic halide are/is used as a halogenating agent, an organic halogen-containing compound is used as a modifier, and one or more inertial organic solvents are used as a dispersing agent; and the obtained spherical particle alkoxy magnesium has higher stacking density, more perfect particle shape and higher particle size distribution uniformity. The alkoxy magnesium is particularly suitable to be used as an olefin polymerization catalyst carrier. The obtained catalyst has high activity, higher stacking density, good particle shape and uniform distribution and is suitable for devices for producing polypropylene by gas-phase processes.