CN110964137B

CN110964137B - Magnesium compound supported non-metallocene catalyst, preparation method and application thereof

Info

Publication number: CN110964137B
Application number: CN201910019282.2A
Authority: CN
Inventors: 李传峰; 汪文睿; 郭峰; 汪开秀
Original assignee: China Petroleum and Chemical Corp; Sinopec Yangzi Petrochemical Co Ltd
Current assignee: China Petroleum and Chemical Corp; Sinopec Yangzi Petrochemical Co Ltd
Priority date: 2018-09-28
Filing date: 2019-01-09
Publication date: 2023-08-01
Anticipated expiration: 2039-01-09
Also published as: CN110964137A

Abstract

The invention relates to a magnesium compound supported non-metallocene catalyst, a preparation method and application thereof. The preparation method of the supported non-metallocene catalyst comprises the following steps: a step of dissolving a magnesium compound in tetrahydrofuran to obtain a magnesium compound solution; drying the magnesium compound solution, or adding a precipitant into the magnesium compound solution and drying the obtained solid product to obtain a magnesium carrier, wherein the tetrahydrofuran content in the magnesium carrier is 0.10-0.50 wt%; a step of treating the magnesium support with a chemical treatment agent selected from group IVB metal compounds to obtain a modified support; and a step of treating the modified support with a non-metallocene ligand or a non-metallocene complex to obtain the magnesium compound supported non-metallocene catalyst. The magnesium compound supported non-metallocene catalyst has the characteristics of simple and feasible preparation method, flexible and adjustable polymerization activity and the like.

Description

Magnesium compound supported non-metallocene catalyst, preparation method and application thereof

Technical Field

The present invention relates to a non-metallocene catalyst. In particular, the invention relates to a magnesium compound supported non-metallocene catalyst, a preparation method thereof and application thereof in olefin homo/copolymerization.

Background

The non-metallocene catalyst appearing in the middle and later stages of the 90 th century is also called a post-metallocene catalyst, the central atom of the main catalyst comprises almost all transition metal elements, cyclopentadiene (metallocene) and derivative groups thereof (indene, fluorene and the like) are not contained in the structure, and coordination atoms are oxygen, nitrogen, sulfur, phosphorus and the like, and the catalyst is characterized in that central ions have stronger electrophilicity and have a cis-alkyl or halogen metal central structure, so that olefin insertion and sigma-bond transfer are easy to carry out, the central metal is easy to alkylate, and the generation of cation active center is facilitated; the complexes formed have defined geometric configurations, stereoselectivity, electronegativity and chiral adjustability. In addition, the formed metal-carbon bond is easily polarized, which is beneficial to the polymerization of olefin. Thus, an olefin polymer having a higher molecular weight can be obtained even at a higher polymerization temperature.

However, the homogeneous olefin polymerization catalyst has the defects of short activity duration, low utilization rate of active centers (easy occurrence of bimolecular deactivation), easy kettle adhesion of the generated polymer, high aluminoxane dosage in the polymerization process (high preparation cost), and only application in solution polymerization process, and the like, and the industrial application of the homogeneous olefin polymerization catalyst is severely limited.

The olefin homo/copolymerization catalyst or the catalyst system prepared by the patent documents ZL01126323.7, ZL02151294.9, ZL02110844.7 and WO03/010207 has wide olefin homo/copolymerization performance and is suitable for various polymerization processes, but the catalyst or the catalyst system disclosed in the patent document needs higher cocatalyst dosage during olefin polymerization to obtain proper olefin polymerization activity, and has a kettle sticking phenomenon in the polymerization process.

In order to overcome the defects in the homogeneous catalytic system, the common practice is to load homogeneous catalysts such as non-metallocene catalysts and the like on a carrier to prepare the supported catalyst, so that the polymerization performance of olefin and the particle morphology of the obtained polymer are improved, and more polymerization processes such as gas phase polymerization or slurry polymerization are satisfied.

The non-metallocene catalysts disclosed in patent documents ZL01126323.7, ZL02151294.9, ZL02110844.7 and WO03/010207 are supported in various ways to obtain supported non-metallocene catalysts, such as patent documents CN1539855A, CN 1539856A, CN1789291A, CN1789292A, CN1789290A, WO/2006/06501, 200510119401.X, but all of these documents relate to the loading of a non-metallocene organic compound (or called non-metallocene catalyst or non-metallocene complex) containing a transition metal on a treated carrier, or the loading of the non-metallocene catalyst is lower or the combination thereof with the carrier is not very tight.

Patent document CN200510080210.7 discloses a supported vanadium non-metallocene polyolefin catalyst synthesized in situ, a preparation method and application thereof, wherein dialkyl magnesium is reacted with acyl naphthol or beta-diketone to form an acyl naphthol magnesium or beta-diketone magnesium compound, and then reacted with tetravalent vanadium chloride to form a carrier and an active catalytic component.

Patent document CN200610026765.8 discloses a single site ziegler-natta olefin polymerization catalyst. The catalyst takes salicylaldehyde or substituted salicylaldehyde derivative containing coordination groups as an electron donor, and is obtained by adding a pretreated carrier (such as silica gel), a metal compound (such as titanium tetrachloride) and the electron donor into a magnesium compound (such as magnesium chloride)/tetrahydrofuran solution, and treating.

Similarly, CN200610026766.2 discloses a class of heteroatom-containing organic compounds and their use in ziegler-natta catalysts.

Patent document CN200710162676.0 discloses a magnesium compound supported non-metallocene catalyst and a method for producing the same, which is obtained by directly contacting a non-metallocene ligand with a magnesium compound containing a catalytically active metal by an in-situ supporting method. However, the contact between the catalytic active metal and the magnesium compound means that the IVB metal compound is added into the formed magnesium compound solid (such as the magnesium compound solid or the modified magnesium compound solid), so that the contact cannot fully react between the catalytic active metal and the magnesium compound, and the obtained magnesium compound carrier containing the catalytic active metal is heterogeneous and not fully contacted and reacted among molecules, thereby limiting the full play of the action of the non-metallocene ligand added subsequently.

Similarly, patent document CN200710162667.1 discloses a magnesium compound supported non-metallocene catalyst and a method for preparing the same, which have similar problems. Which is obtained by directly contacting a catalytically active metal compound with a magnesium compound containing a non-metallocene ligand by an in situ supporting method. However, the contact means that the non-metallocene ligand solution is added to the formed magnesium compound solid (such as the magnesium compound solid or the modified magnesium compound solid), and such contact cannot achieve sufficient reaction of the non-metallocene ligand with the magnesium compound, and the obtained magnesium compound carrier containing the non-metallocene ligand is necessarily heterogeneous and is not sufficiently contacted and reacted between molecules, thereby limiting the full play of the effect of the non-metallocene ligand.

Patent document CN200910210990.0 discloses a preparation method of a supported non-metallocene catalyst, comprising the following steps: a step of dissolving a magnesium compound and a non-metallocene ligand in a solvent in the presence of an alcohol to obtain a magnesium compound solution; adding a precipitant into the magnesium compound solution to obtain a modified carrier; and a step of treating the modified support with a chemical treatment agent selected from group IVB metal compounds to obtain the supported non-metallocene catalyst. It can be seen from the disclosure that the alcohol introduced acts only as a co-solvent for the magnesium compound and the non-metallocene ligand and is then removed by drying during the drying process.

The problem with the supported non-metallocene catalysts of the prior art is that the olefin polymerization activity is low and that higher amounts of cocatalyst must be used in order to increase the activity. Moreover, in the prior art, silica gel or the like is used as a carrier, so that the ash content in the polymer obtained by polymerization is high, thereby limiting the practical use of the polymer. The catalyst loaded by the magnesium compound also limits the great improvement of the catalyst activity due to heterogeneous composition and distribution formed in the preparation process. Furthermore, the presence of certain components during the preparation of the catalyst may also affect the activity of the final catalyst.

Thus, there is still a need for a supported non-metallocene catalyst which is simple in preparation process, suitable for industrial production, and which can overcome those problems existing in the prior art supported non-metallocene catalysts.

Disclosure of Invention

The present inventors have made intensive studies on the basis of the prior art, and have found that the aforementioned problems can be solved by using a specific preparation method for producing a supported non-metallocene catalyst, particularly by controlling the concentration of tetrahydrofuran as a solvent in a magnesium carrier, thereby exerting its effect in improving catalyst activity, polymer particle morphology and the like, and have thus completed the present invention.

In the preparation of the supported non-metallocene catalysts of the present invention, no proton donor (such as those conventionally used in the art) is added. In addition, in the preparation method of the supported non-metallocene catalyst of the present invention, no electron donor (electron donors conventionally used, which are known in the art, include monoesters, diesters, diethers, diketones, glycol esters and the like) is added. Furthermore, in the preparation method of the magnesium compound supported non-metallocene catalyst of the present invention, the strict reaction requirements and reaction conditions are not required. Therefore, the preparation method of the magnesium compound supported non-metallocene catalyst is simple and is very suitable for industrial production.

Specifically, the invention relates to a preparation method of a magnesium compound supported non-metallocene catalyst, which comprises the following steps:

a step of dissolving a magnesium compound in tetrahydrofuran to obtain a magnesium compound solution;

drying the magnesium compound solution, or adding a precipitant into the magnesium compound solution and drying the obtained solid product to obtain a magnesium carrier, wherein the tetrahydrofuran content in the magnesium carrier is 0.10-0.50 wt%; preferably 0.10 to 0.35wt%, more preferably 0.11 to 0.25wt%;

A step of treating the magnesium support with a chemical treatment agent selected from group IVB metal compounds to obtain a modified support; and

and (3) treating the modified carrier with a non-metallocene ligand or a non-metallocene complex to obtain the magnesium compound supported non-metallocene catalyst.

The invention also relates to a magnesium compound supported non-metallocene catalyst prepared by the preparation method and application thereof in olefin homo/copolymerization.

Technical effects

The preparation method of the magnesium compound supported non-metallocene catalyst has simple and feasible process.

By adopting the preparation method of the catalyst provided by the invention, surprisingly, the catalytic activity and the bulk density of the polymer are obviously improved and the amount of the cocatalyst required in the polymerization process is lower by strictly controlling and retaining a certain tetrahydrofuran content in the magnesium carrier prepared after the drying step.

The magnesium compound supported non-metallocene catalyst prepared by the invention has remarkable copolymerization effect, namely the copolymerization activity of the catalyst is higher than that of the homo-polymerization activity, and the copolymerization reaction can improve the bulk density of the polymer, namely the particle morphology of the polymer.

The magnesium compound supported non-metallocene catalyst provided by the invention can be polymerized to obtain ultra-high molecular weight polyethylene with higher molecular weight under the condition of homo-polymerization without participation of hydrogen.

Detailed Description

The following detailed description of embodiments of the invention is provided, but it should be noted that the scope of the invention is not limited by these embodiments, but is defined by the appended claims.

In the context of the present invention, unless otherwise specifically defined or the meaning is beyond the understanding of the skilled artisan, hydrocarbon or hydrocarbon derivative groups of 3 carbon atoms or more (such as propyl, propoxy, butyl, butane, butene, butenyl, hexane, etc.) have the same meaning as when the prefix "positive" is uncrowded. For example, propyl is generally understood to be n-propyl, while butyl is generally understood to be n-butyl.

In the context of the present invention, physical property values of a substance (such as boiling point) are measured values at normal temperature (25 ℃) and normal pressure (101325 Pa), unless otherwise specified.

According to the invention, the preparation method of the magnesium compound supported non-metallocene catalyst comprises the following steps:

a step of dissolving a magnesium compound in tetrahydrofuran to obtain a magnesium compound solution; drying the magnesium compound solution, or adding a precipitant into the magnesium compound solution and drying the obtained solid product to obtain a magnesium carrier, wherein the tetrahydrofuran content in the magnesium carrier is 0.10-0.50 wt%; a step of treating the magnesium support with a chemical treatment agent selected from group IVB metal compounds to obtain a modified support; and a step of treating the modified support with a non-metallocene ligand or a non-metallocene complex to obtain the magnesium compound supported non-metallocene catalyst.

The procedure for obtaining the magnesium compound solution will be specifically described below.

According to this step, a magnesium compound is dissolved in tetrahydrofuran, thereby obtaining the magnesium compound solution.

In preparing the magnesium compound solution, the ratio of the magnesium compound (solid) to tetrahydrofuran in terms of magnesium element is 1mol:0.5 to 10L, preferably 1mol:1 to 8L, more preferably 1mol: 2-6L.

According to the invention, no alcohol is used in the step of obtaining the magnesium compound solution.

The preparation time of the magnesium compound solution (i.e., the dissolution time of the magnesium compound) is not particularly limited, but is generally 0.5 to 24 hours, preferably 4 to 24 hours. During this preparation, stirring may be used to promote dissolution of the magnesium compound. The stirring may take any form, such as a stirring paddle (typically at a speed of 10 to 1000 rpm), or the like. Dissolution may be promoted by appropriate heating, as needed.

The magnesium compound is specifically described below.

According to the present invention, the term "magnesium compound" refers to an organic or inorganic solid anhydrous magnesium-containing compound conventionally used as a carrier for a supported olefin polymerization catalyst, using the concept generally in the art.

According to the present invention, examples of the magnesium compound include magnesium halide, alkoxymagnesium, alkylmagnesium halide and alkylalkoxymagnesium.

Specifically, examples of the magnesium halide include magnesium chloride (MgCl) ₂ ) Magnesium bromide (MgBr) ₂ ) Magnesium iodide (MgI) ₂ ) And magnesium fluoride (MgF) ₂ ) And the like, of which magnesium chloride is preferable.

Examples of the alkoxymagnesium halide include methoxymagnesium chloride (Mg (OCH) ₃ ) Cl), ethoxymagnesium chloride (Mg (OC) ₂ H ₅ ) Cl), magnesium chloride propoxy (Mg (OC) ₃ H ₇ ) Cl), magnesium n-butoxide (Mg (OC) ₄ H ₉ ) Cl), magnesium isobutoxy chloride (Mg (i-OC) ₄ H ₉ ) Cl), methoxy magnesium bromide (Mg (OCH) ₃ ) Br), ethoxymagnesium bromide (Mg (OC) ₂ H ₅ ) Br), magnesium propoxybromide (Mg (OC) ₃ H ₇ ) Br), n-butoxymagnesium bromide (Mg (OC) ₄ H ₉ ) Br), magnesium isobutoxy bromide (Mg (i-OC) ₄ H ₉ ) Br), magnesium methoxyiodide (Mg (OCH) ₃ ) I), magnesium ethoxyiodide (Mg (OC) ₂ H ₅ ) I), magnesium propoxyiodide (Mg (OC) ₃ H ₇ ) I), magnesium n-butoxide iodide (Mg (OC) ₄ H ₉ ) I) and magnesium isobutoxy iodide (Mg (I-OC) ₄ H ₉ ) I), etc., of which methoxy magnesium chloride, ethoxy magnesium chloride and isobutoxy magnesium chloride are preferred.

Examples of the magnesium alkoxide include magnesium methoxide (Mg (OCH) ₃ ) ₂ ) Magnesium ethoxide (Mg (OC) ₂ H ₅ ) ₂ ) Magnesium propoxy (Mg (OC) ₃ H ₇ ) ₂ ) Magnesium butoxide (Mg (OC) ₄ H ₉ ) ₂ ) Magnesium isobutoxide (Mg (i-OC) ₄ H ₉ ) ₂ ) And 2-ethylhexyloxy magnesium (Mg (OCH) ₂ CH(C ₂ H ₅ )C ₄ H _- ) ₂ ) And the like, of which ethoxymagnesium and isobutoxymagnesium are preferable.

Examples of the alkyl magnesium include methyl magnesium (Mg (CH) ₃ ) ₂ ) Ethyl magnesium (Mg (C) ₂ H ₅ ) ₂ ) Propyl magnesium (Mg (C) ₃ H ₇ ) ₂ ) N-butylmagnesium (Mg (C) ₄ H ₉ ) ₂ ) And isobutyl magnesium (Mg (i-C) ₄ H ₉ ) ₂ ) And the like, of which ethyl magnesium and n-butyl magnesium are preferable.

Examples of the alkyl magnesium halide include methyl magnesium chloride (Mg (CH) ₃ ) Cl), ethyl magnesium chloride (Mg (C) ₂ H ₅ ) Cl), propyl magnesium chloride (Mg (C) ₃ H ₇ ) Cl), n-butyl magnesium chloride (Mg (C) ₄ H ₉ ) Cl), isobutyl magnesium chloride (Mg (i-C) ₄ H ₉ ) Cl), methyl magnesium bromide (Mg (CH) ₃ ) Br), ethyl magnesium bromide (Mg (C) ₂ H ₅ ) Br), propyl magnesium bromide (Mg (C) ₃ H ₇ ) Br), n-butylmagnesium bromide (Mg (C) ₄ H ₉ ) Br), isobutyl magnesium bromide (Mg (i-C) ₄ H ₉ ) Br), methyl magnesium iodide (Mg (CH) ₃ ) I), ethyl magnesium iodide (Mg (C) ₂ H ₅ ) I), propyl magnesium iodide (Mg (C) ₃ H ₇ ) I), n-butyl magnesium iodide (Mg (C) ₄ H ₉ ) I) and magnesium isobutyl iodide (Mg (I-C) ₄ H ₉ ) I), etc., among which methyl magnesium chloride, ethyl magnesium chloride and isobutyl magnesium chloride are preferred.

Examples of the alkylalkoxymagnesium include methylmagnesium (Mg (OCH) ₃ )(CH ₃ ) Magnesium methylethoxy (Mg (OC) ₂ H ₅ )(CH ₃ ) Magnesium methylpropionate (Mg (OC) ₃ H ₇ )(CH ₃ ) Methyl n-butoxymagnesium (Mg (OC) ₄ H ₉ )(CH ₃ ) Magnesium methyl isobutoxide (Mg (i-OC) ₄ H ₉ )(CH ₃ ) Ethyl methoxymagnesium (Mg (OCH) ₃ )(C ₂ H ₅ ) Magnesium ethyl ethoxide (Mg (OC) ₂ H ₅ )(C ₂ H ₅ ) Magnesium ethylpropoxide (Mg (OC) ₃ H ₇ )(C ₂ H ₅ ) Magnesium ethyl n-butoxide (Mg (OC) ₄ H ₉ )(C ₂ H ₅ ) Magnesium ethyl isobutoxide (Mg (i-OC) ₄ H ₉ )(C ₂ H ₅ ) Propyl methoxy magnesium (Mg (OCH) ₃ )(C ₃ H ₇ ) Magnesium propyl ethoxy (Mg (OC) ₂ H ₅ )(C ₃ H ₇ ) Magnesium propylpropoxide (Mg (OC) ₃ H ₇ )(C ₃ H ₇ ) Propyl magnesium n-butoxide (Mg (OC) ₄ H ₉ )(C ₃ H ₇ ) Magnesium propyl isobutoxide (Mg (i-OC) ₄ H ₉ )(C ₃ H ₇ ) N-butyl methoxy magnesium (Mg (OCH) ₃ )(C ₄ H ₉ ) N-butyl ethoxymagnesium (Mg (OC) ₂ H ₅ )(C ₄ H ₉ ) N-butyl-propoxy magnesium (Mg (OC) ₃ H ₇ )(C ₄ H ₉ ) N-butyl n-butoxymagnesium (Mg (OC) ₄ H ₉ )(C ₄ H ₉ ) N-butyl magnesium isobutoxide (Mg (i-OC) ₄ H ₉ )(C ₄ H ₉ ) Isobutyl methoxymagnesium (Mg (OCH) ₃ )(i-C ₄ H ₉ ) Isobutyl ethoxymagnesium (Mg (OC) ₂ H ₅ )(i-C ₄ H ₉ ) Magnesium isopropoxide (Mg (OC) ₃ H ₇ )(i-C ₄ H ₉ ) Isobutyl n-butoxymagnesium (Mg (OC) ₄ H ₉ )(i-C ₄ H ₉ ) And isobutylmagnesium isobutoxide (Mg (i-OC) ₄ H ₉ )(i-C ₄ H ₉ ) Butyl ethoxy magnesium is preferred among others.

These magnesium compounds may be used alone or in combination of two or more thereof, and are not particularly limited.

When used in a plurality of mixed forms, the molar ratio between any two magnesium compounds in the magnesium compound mixture is, for example, 0.25 to 4:1, preferably 0.5 to 3:1, more preferably 1 to 2:1.

And drying the magnesium compound solution, or adding a precipitant into the magnesium compound solution to precipitate solid matters from the magnesium compound solution and drying the obtained solid product to obtain the magnesium carrier.

The precipitant is specifically described below.

According to the present invention, the term "precipitant" is used in the general sense of the art to refer to a chemically inert liquid phase which is capable of reducing the solubility of a solute (such as the magnesium compound) in its solution and thus allowing it to precipitate out of the solution in solid form.

According to the present invention, examples of the precipitant include solvents that are poor solvents for the magnesium compound and good solvents for tetrahydrofuran for dissolving the magnesium compound, such as alkanes, cycloalkanes, haloalkanes, and halocycloalkanes.

Examples of the alkane include pentane, hexane, heptane, octane, nonane, and decane, and among them, hexane, heptane, and decane are preferable, and hexane and decane are most preferable.

Examples of the cycloalkane include cyclohexane, cyclopentane, cycloheptane, cyclodecane, and cyclononane, and cyclohexane is most preferable.

Examples of the halogenated alkane include methylene chloride, dichlorohexane, dichloroheptane, chloroform, trichloroethane, trichlorobutane, dibromomethane, dibromoethane, dibromoheptane, tribromomethane, tribromoethane, and tribromobutane.

Examples of the halogenated cycloalkanes include chlorocyclopentane, chlorocyclohexane, chlorocycloheptane, chlorocyclooctane, chlorocyclononane, chlorocyclodecane, bromocyclopentane, bromocyclohexane, bromocycloheptane, bromocyclooctane, bromocyclononane, and bromocyclodecane.

These precipitants may be used alone or in combination of two or more kinds in any ratio.

The precipitant may be added in one-time or dropwise, preferably in one-time. During this precipitation, stirring may be used to facilitate the dispersion of the precipitant in the magnesium compound solution and to facilitate the final precipitation of the solid product. The stirring may take any form, such as a stirring paddle (typically at a speed of 10 to 1000 rpm), or the like.

The amount of the precipitant is not particularly limited, but generally, the ratio of the precipitant to tetrahydrofuran for dissolving the magnesium compound is 1:0.2 to 5, preferably 1:0.5 to 2, more preferably 1:0.8 to 1.5.

The temperature of the precipitating agent is not particularly limited, but is generally preferably at ordinary temperature. Moreover, the precipitation process is also generally preferably carried out at normal temperature.

After complete precipitation, the obtained solid product is filtered, optionally washed, and dried, so that a magnesium carrier can be obtained. The method of filtration and washing is not particularly limited, and those conventionally used in the art can be used as required.

The washing is generally carried out 1 to 6 times, preferably 2 to 3 times, as required. Among them, the same solvent as the precipitant is preferably used for the washing solvent, but may be different.

The method of drying is not particularly limited as long as the method is a drying method in which the tetrahydrofuran content in the magnesium carrier is controlled to be in the range of 0.10 to 0.50wt%, preferably 0.10 to 0.35wt%, more preferably 0.11 to 0.25wt% by drying the magnesium compound solution or by drying the solid product (optionally after washing).

According to the invention, the drying mode (including drying temperature, drying vacuum degree and drying time) is limited by the tetrahydrofuran content of the magnesium carrier meeting the requirements of the invention. For example, the magnesium compound solution is dried at a temperature of 15 to 60 ℃, preferably 35 to 55 ℃, under a vacuum of 2 to 100mBar, preferably 5 to 50mBar, for 2 to 30 hours, preferably 4 to 12 hours, and then dried at a temperature of 65 to 100 ℃, preferably 70 to 90 ℃ under a vacuum of 2 to 100mBar, preferably 5 to 50mBar, for 1 to 20 hours, preferably 2 to 8 hours, thereby obtaining the magnesium carrier. Alternatively, a precipitant is added to the magnesium compound solution, and the obtained solid product (optionally after washing) is dried under vacuum of 2 to 100mBar, preferably 5 to 50mBar, absolute pressure at 15 to 60 ℃, preferably 35 to 55 ℃ for 2 to 30 hours, preferably 4 to 12 hours, and then dried under vacuum of 2 to 100mBar, preferably 5 to 50mBar, absolute pressure at 65 to 100 ℃, preferably 70 to 90 ℃ for 1 to 20 hours, preferably 2 to 8 hours, thereby obtaining the magnesium carrier.

Next, the magnesium support is treated with a chemical treatment agent selected from group IVB metal compounds to obtain a modified support.

The chemical treatment agent is specifically described below.

According to the invention, a group IVB metal compound is used as the chemical treatment agent.

Examples of the group IVB metal compound include group IVB metal halides, group IVB metal alkyls, group IVB metal alkoxides, group IVB metal alkyl halides and group IVB metal alkoxy halides.

Examples of the group IVB metal halide, the group IVB metal alkyl compound, the group IVB metal alkoxy compound, the group IVB metal alkyl halide and the group IVB metal alkoxy halide include compounds having the structure of the following general formula (IV):

M(OR ¹ ) _m X _n R ² _4-m－n (IV)

wherein:

m is 0, 1, 2, 3 or 4;

n is 0, 1, 2, 3 or 4;

m is a group IVB metal of the periodic Table, such as titanium, zirconium, hafnium, etc.;

x is halogen, such as F, cl, br, I, etc.; and is also provided with

R ¹ And R is ² Each independently selected from C _1-10 Alkyl groups such as methyl, ethyl, propyl, n-butyl, isobutyl, etc., R ¹ And R is ² May be the same or different.

SpecificallyExamples of the group IVB metal halide include titanium Tetrafluoride (TiF) ₄ ) Titanium tetrachloride (TiCl) ₄ ) Titanium tetrabromide (TiBr) ₄ ) Titanium Tetraiodide (TiI) ₄ )；

Zirconium tetrafluoride (ZrF) ₄ ) Zirconium tetrachloride (ZrCl) ₄ ) Zirconium tetrabromide (ZrBr) ₄ ) Zirconium tetraiodide (ZrI) ₄ )；

Hafnium tetrafluoride (HfF) ₄ ) Hafnium tetrachloride (HfCl) ₄ ) Hafnium tetrabromide (HfBr) ₄ ) Hafnium tetraiodide (HfI) ₄ )。

Examples of the group IVB metal alkyl compound include tetramethyl titanium (Ti (CH) ₃ ) ₄ ) Titanium tetraethyl (Ti (CH) ₃ CH ₂ ) ₄ ) Titanium tetraisobutyl (Ti (i-C) ₄ H ₉ ) ₄ ) Tetra-n-butyl titanium (Ti (C) ₄ H ₉ ) ₄ ) Triethylmethyl titanium (Ti (CH) ₃ )(CH ₃ CH ₂ ) ₃ ) Diethyl dimethyl titanium (Ti (CH) ₃ ) ₂ (CH ₃ CH ₂ ) ₂ ) Trimethylethyl titanium (Ti (CH) ₃ ) ₃ (CH ₃ CH ₂ ) Triisobutyl methyl titanium (Ti (CH) ₃ )(i-C ₄ H ₉ ) ₃ ) Diisobutyldimethyl titanium (Ti (CH) ₃ ) ₂ (i-C ₄ H ₉ ) ₂ ) Trimethyl isobutyl titanium (Ti (CH) ₃ ) ₃ (i-C ₄ H ₉ ) Triisobutyl ethyl titanium (Ti (CH) ₃ CH ₂ )(i-C ₄ H ₉ ) ₃ ) Diisobutyldiethyl titanium (Ti (CH) ₃ CH ₂ ) ₂ (i-C ₄ H ₉ ) ₂ ) Triethylisobutyl titanium (Ti (CH) ₃ CH ₂ ) ₃ (i-C ₄ H ₉ ) Tri-n-butyl methyl titanium (Ti (CH) ₃ )(C ₄ H ₉ ) ₃ ) Di-n-butyldimethyl titanium (Ti (CH) ₃ ) ₂ (C ₄ H ₉ ) ₂ ) Trimethyl n-butyl titanium (Ti (CH) ₃ ) ₃ (C ₄ H ₉ ) Tri-n-butyl methyl titanium (Ti (CH) ₃ CH ₂ )(C ₄ H ₉ ) ₃ ) Di-n-butyl diethyl titanium (Ti (CH) ₃ CH ₂ ) ₂ (C ₄ H ₉ ) ₂ ) Triethyl n-butyl titanium (Ti (CH) ₃ CH ₂ ) ₃ (C ₄ H ₉ ) Etc.;

zirconium tetramethyl (Zr (CH) ₃ ) ₄ ) Zirconium tetraethyl (Zr (CH) ₃ CH ₂ ) ₄ ) Zirconium tetraisobutyl (Zr (i-C) ₄ H ₉ ) ₄ ) Tetra-n-butylzirconium (Zr (C) ₄ H ₉ ) ₄ ) Zirconium triethyl (Zr (CH) ₃ )(CH ₃ CH ₂ ) ₃ ) Zirconium diethyl (Zr (CH) ₃ ) ₂ (CH ₃ CH ₂ ) ₂ ) Trimethylethylzirconium (Zr (CH) ₃ ) ₃ (CH ₃ CH ₂ ) Triisobutyl methyl zirconium (Zr (CH) ₃ )(i-C ₄ H ₉ ) ₃ ) Diisobutylzirconium dimethyl (Zr (CH) ₃ ) ₂ (i-C ₄ H ₉ ) ₂ ) Trimethylzirconium isobutyl (Zr (CH) ₃ ) ₃ (i-C ₄ H ₉ ) Triisobutylethylzirconium (Zr (CH) ₃ CH ₂ )(i-C ₄ H ₉ ) ₃ ) Diisobutyldiethylzirconium (Zr (CH) ₃ CH ₂ ) ₂ (i-C ₄ H ₉ ) ₂ ) Triethylisobutyl zirconium (Zr (CH) ₃ CH ₂ ) ₃ (i-C ₄ H ₉ ) Tri-n-butyl methyl zirconium (Zr (CH) ₃ )(C ₄ H ₉ ) ₃ ) Di-n-butylzirconium dimethyl (Zr (CH) ₃ ) ₂ (C ₄ H ₉ ) ₂ ) Trimethyl n-butyl zirconium (Zr (CH) ₃ ) ₃ (C ₄ H ₉ ) Tri-n-butyl methyl zirconium (Zr (CH) ₃ CH ₂ )(C ₄ H ₉ ) ₃ ) Di-n-butyl-diethyl-zirconium (Zr (CH) ₃ CH ₂ ) ₂ (C ₄ H ₉ ) ₂ ) Triethyl n-butyl zirconium (Zr (CH) ₃ CH ₂ ) ₃ (C ₄ H ₉ ) Etc.;

hafnium tetramethyl (Hf (CH) ₃ ) ₄ ) Hafnium tetraethyl (Hf (CH) ₃ CH ₂ ) ₄ ) Hafnium tetraisobutyl (Hf (i-C) ₄ H ₉ ) ₄ ) Tetra-n-butylhafnium (Hf (C) ₄ H ₉ ) ₄ ) Hafnium triethylmethyl (Hf (CH) ₃ )(CH ₃ CH ₂ ) ₃ ) Hafnium dimethyl diethyl (Hf (CH) ₃ ) ₂ (CH ₃ CH ₂ ) ₂ ) Trimethylhafnium ethyl (Hf (CH) ₃ ) ₃ (CH ₃ CH ₂ ) Hafnium triisobutyl (Hf (CH) ₃ )(i-C ₄ H ₉ ) ₃ ) Hafnium diisobutyldimethyl (Hf (CH) ₃ ) ₂ (i-C ₄ H ₉ ) ₂ ) Trimethylhafnium isobutyl (Hf (CH) ₃ ) ₃ (i-C ₄ H ₉ ) Hafnium triisobutyl ethyl (Hf (CH) ₃ CH ₂ )(i-C ₄ H ₉ ) ₃ ) Diisobutylhafnium diethyl (Hf (CH) ₃ CH ₂ ) ₂ (i-C ₄ H ₉ ) ₂ ) Triethylisobutylhafnium (Hf (CH) ₃ CH ₂ ) ₃ (i-C ₄ H ₉ ) (1), tri-n-butylhafnium methyl (Hf (CH) ₃ )(C ₄ H ₉ ) ₃ ) Di-n-butylhafnium dimethyl (Hf (CH) ₃ ) ₂ (C ₄ H ₉ ) ₂ ) Trimethyl n-butyl hafnium (Hf (CH) ₃ ) ₃ (C ₄ H ₉ ) (1), tri-n-butylhafnium methyl (Hf (CH) ₃ CH ₂ )(C ₄ H ₉ ) ₃ ) Di-n-butylhafnium diethyl (Hf (CH) ₃ CH ₂ ) ₂ (C ₄ H ₉ ) ₂ ) Triethylhafnium n-butyl (Hf (CH) ₃ CH ₂ ) ₃ (C ₄ H ₉ ) And the like.

Examples of the group IVB metal alkoxide include tetramethoxytitanium (Ti (OCH) ₃ ) ₄ ) Titanium tetraethoxide (Ti (OCH) ₃ CH ₂ ) ₄ ) Titanium tetraisobutoxide (Ti (i-OC) ₄ H ₉ ) ₄ ) Titanium tetra-n-butoxide (Ti (OC) ₄ H ₉ ) ₄ ) Triethoxy methoxy titanium (Ti (OCH) ₃ )(OCH ₃ CH ₂ ) ₃ ) DiethoxydimethylTitanium oxide (Ti (OCH) ₃ ) ₂ (OCH ₃ CH ₂ ) ₂ ) Trimethoxyethoxytitanium (Ti (OCH) ₃ ) ₃ (OCH ₃ CH ₂ ) Titanium triisobutoxide (Ti (OCH) ₃ )(i-OC ₄ H ₉ ) ₃ ) Diisobutoxy dimethoxy titanium (Ti (OCH) ₃ ) ₂ (i-OC ₄ H ₉ ) ₂ ) Titanium trimethoxyisobutoxy (Ti (OCH) ₃ ) ₃ (i-OC ₄ H ₉ ) Titanium triisobutoxide (Ti (OCH) ₃ CH ₂ )(i-OC ₄ H ₉ ) ₃ ) Diisobutoxy diethoxy titanium (Ti (OCH) ₃ CH ₂ ) ₂ (i-OC ₄ H ₉ ) ₂ ) Titanium triethoxy isobutoxide (Ti (OCH) ₃ CH ₂ ) ₃ (i-OC ₄ H ₉ ) Titanium tri-n-butoxymethoxide (Ti (OCH) ₃ )(OC ₄ H ₉ ) ₃ ) Di-n-Butoxydimethoxy titanium (Ti (OCH) ₃ ) ₂ (OC ₄ H ₉ ) ₂ ) Trimethoxy-n-butoxytitanium (Ti (OCH) ₃ ) ₃ (OC ₄ H ₉ ) Titanium tri-n-butoxymethoxide (Ti (OCH) ₃ CH ₂ )(OC ₄ H ₉ ) ₃ ) di-n-Butoxydiethoxy titanium (Ti (OCH) ₃ CH ₂ ) ₂ (OC ₄ H ₉ ) ₂ ) Titanium n-butoxide triethoxide (Ti (OCH) ₃ CH ₂ ) ₃ (OC ₄ H ₉ ) Etc.;

zirconium tetramethoxyl (Zr (OCH) ₃ ) ₄ ) Zirconium tetraethoxide (Zr (OCH) ₃ CH ₂ ) ₄ ) Zirconium tetraisobutoxide (Zr (i-OC) ₄ H ₉ ) ₄ ) Zirconium tetra-n-butoxide (Zr (OC) ₄ H ₉ ) ₄ ) Zirconium triethoxy methoxide (Zr (OCH) ₃ )(OCH ₃ CH ₂ ) ₃ ) Zirconium dimethoxy diethoxide (Zr (OCH) ₃ ) ₂ (OCH ₃ CH ₂ ) ₂ ) Zirconium trimethoxyethoxide (Zr (OCH) ₃ ) ₃ (OCH ₃ CH ₂ ) Zirconium triisobutoxide methoxide (Zr (O) CH ₃ )(i-OC ₄ H ₉ ) ₃ ) Zirconium diisobutoxide dimethoxy (Zr (OCH) ₃ ) ₂ (i-OC ₄ H ₉ ) ₂ ) Zirconium trimethoxy isobutoxy (Zr (OCH) ₃ ) ₃ (i-C ₄ H ₉ ) Zirconium triisobutoxide (Zr (OCH) ₃ CH ₂ )(i-OC ₄ H ₉ ) ₃ ) Zirconium diisobutoxide (Zr (OCH) ₃ CH ₂ ) ₂ (i-OC ₄ H ₉ ) ₂ ) Zirconium triethoxy isobutoxide (Zr (OCH) ₃ CH ₂ ) ₃ (i-OC ₄ H ₉ ) Zirconium tri-n-butoxymethoxide (Zr (OCH) ₃ )(OC ₄ H ₉ ) ₃ ) Di-n-Butoxydimethoxyzirconium (Zr (OCH) ₃ ) ₂ (OC ₄ H ₉ ) ₂ ) Zirconium trimethoxy-n-butoxide (Zr (OCH) ₃ ) ₃ (OC ₄ H ₉ ) Zirconium tri-n-butoxymethoxide (Zr (OCH) ₃ CH ₂ )(OC ₄ H ₉ ) ₃ ) di-n-Butoxydiethoxy zirconium (Zr (OCH) ₃ CH ₂ ) ₂ (OC ₄ H ₉ ) ₂ ) Zirconium triethoxy n-butoxide (Zr (OCH) ₃ CH ₂ ) ₃ (OC ₄ H ₉ ) Etc.;

hafnium tetramethoxyate (Hf (OCH) ₃ ) ₄ ) Hafnium tetraethoxide (Hf (OCH) ₃ CH ₂ ) ₄ ) Hafnium tetra-isobutoxide (Hf (i-OC) ₄ H ₉ ) ₄ ) Hafnium tetra-n-butoxide (Hf (OC) ₄ H ₉ ) ₄ ) Hafnium triethoxy methoxy (Hf (OCH) ₃ )(OCH ₃ CH ₂ ) ₃ ) Hafnium dimethoxy diethoxide (Hf (OCH) ₃ ) ₂ (OCH ₃ CH ₂ ) ₂ ) Hafnium trimethoxyethoxide (Hf (OCH) ₃ ) ₃ (OCH ₃ CH ₂ ) Hafnium triisobutoxide (Hf (OCH) ₃ )(i-OC ₄ H ₉ ) ₃ ) Hafnium diisobutoxide (Hf (OCH) ₃ ) ₂ (i-OC ₄ H ₉ ) ₂ ) Hafnium trimethoxy isobutoxide (Hf (OCH) ₃ ) ₃ (i-OC ₄ H ₉ ) Hafnium triisobutoxide (Hf (OCH) ₃ CH ₂ )(i-OC ₄ H ₉ ) ₃ ) Hafnium diisobutoxide (Hf (OCH) ₃ CH ₂ ) ₂ (i-OC ₄ H ₉ ) ₂ ) Hafnium triethoxy isobutoxide (Hf (OCH) ₃ CH ₂ ) ₃ (i-C ₄ H ₉ ) Hafnium tri-n-butoxymethoxide (Hf (OCH) ₃ )(OC ₄ H ₉ ) ₃ ) Di-n-Butoxydimethoxy hafnium (Hf (OCH) ₃ ) ₂ (OC ₄ H ₉ ) ₂ ) Hafnium trimethoxy-n-butoxide (Hf (OCH) ₃ ) ₃ (OC ₄ H ₉ ) Hafnium tri-n-butoxymethoxide (Hf (OCH) ₃ CH ₂ )(OC ₄ H ₉ ) ₃ ) Hafnium di-n-butoxide (Hf (OCH) ₃ CH ₂ ) ₂ (OC ₄ H ₉ ) ₂ ) Hafnium triethoxy n-butoxide (Hf (OCH) ₃ CH ₂ ) ₃ (OC ₄ H ₉ ) And the like.

Examples of the group IVB metal alkyl halide include trimethyltitanium chloride (TiCl (CH) ₃ ) ₃ ) Titanium triethylchloride (TiCl (CH) ₃ CH ₂ ) ₃ ) Triisobutyltitanium chloride (TiCl (i-C) ₄ H ₉ ) ₃ ) Tri-n-butyl titanium chloride (TiCl (C) ₄ H ₉ ) ₃ ) Dimethyl titanium dichloride (TiCl) ₂ (CH ₃ ) ₂ ) Titanium diethyl dichloride (TiCl) ₂ (CH ₃ CH ₂ ) ₂ ) Diisobutyl titanium dichloride (TiCl) ₂ (i-C ₄ H ₉ ) ₂ ) Tri-n-butyl titanium chloride (TiCl (C) ₄ H ₉ ) ₃ ) Titanium methyl trichloride (Ti (CH) ₃ )Cl ₃ ) Titanium ethyl trichloride (Ti (CH) ₃ CH ₂ )Cl ₃ ) Titanium isobutyl trichloride (Ti (i-C) ₄ H ₉ )Cl ₃ ) N-butyl titanium trichloride (Ti (C) ₄ H ₉ )Cl ₃ )；

Trimethyl titanium bromide (TiBr (CH) ₃ ) ₃ )、Triethyltitanium bromide (TiBr (CH) ₃ CH ₂ ) ₃ ) Triisobutyl titanium bromide (TiBr (i-C) ₄ H ₉ ) ₃ ) Tri-n-butyl titanium bromide (TiBr (C) ₄ H ₉ ) ₃ ) Dimethyl titanium dibromide (TiBr) ₂ (CH ₃ ) ₂ ) Titanium diethyl dibromide (TiBr) ₂ (CH ₃ CH ₂ ) ₂ ) Diisobutyl titanium dibromide (TiBr) ₂ (i-C ₄ H ₉ ) ₂ ) Tri-n-butyl titanium bromide (TiBr (C) ₄ H ₉ ) ₃ ) Methyl titanium tribromide (Ti (CH) ₃ )Br ₃ ) Titanium ethyltribromide (Ti (CH) ₃ CH ₂ )Br ₃ ) Titanium isobutyl tribromide (Ti (i-C) ₄ H ₉ )Br ₃ ) N-butyl titanium tribromide (Ti (C) ₄ H ₉ )Br ₃ )；

Trimethylzirconium chloride (ZrCl (CH) ₃ ) ₃ ) Zirconium triethyl chloride (ZrCl (CH) ₃ CH ₂ ) ₃ ) Triisobutylzirconium chloride (ZrCl (i-C) ₄ H ₉ ) ₃ ) Tri-n-butylzirconium chloride (ZrCl (C) ₄ H ₉ ) ₃ ) Zirconium dimethyldichloride (ZrCl) ₂ (CH ₃ ) ₂ ) Zirconium diethyl dichloride (ZrCl) ₂ (CH ₃ CH ₂ ) ₂ ) Diisobutylzirconium dichloride (ZrCl) ₂ (i-C ₄ H ₉ ) ₂ ) Tri-n-butylzirconium chloride (ZrCl (C) ₄ H ₉ ) ₃ ) Zirconium methyl trichloride (Zr (CH) ₃ )Cl ₃ ) Zirconium ethyl trichloride (Zr (CH) ₃ CH ₂ )Cl ₃ ) Zirconium isobutyl trichloride (Zr (i-C) ₄ H ₉ )Cl ₃ ) N-butyl zirconium trichloride (Zr (C) ₄ H ₉ )Cl ₃ )；

Zirconium trimethyl bromide (ZrBr (CH) ₃ ) ₃ ) Zirconium triethylbromide (ZrBr (CH) ₃ CH ₂ ) ₃ ) Zirconium triisobutylbromide (ZrBr (i-C) ₄ H ₉ ) ₃ ) Tri-n-butylzirconium bromide (ZrBr (C) ₄ H ₉ ) ₃ ) Zirconium dimethyl dibromide (ZrBr) ₂ (CH ₃ ) ₂ ) Diethyl radicalZirconium dibromide (ZrBr) ₂ (CH ₃ CH ₂ ) ₂ ) Diisobutyl zirconium dibromide (ZrBr) ₂ (i-C ₄ H ₉ ) ₂ ) Tri-n-butylzirconium bromide (ZrBr (C) ₄ H ₉ ) ₃ ) Zirconium methyl tribromide (Zr (CH) ₃ )Br ₃ ) Zirconium ethyl tribromide (Zr (CH) ₃ CH ₂ )Br ₃ ) Zirconium isobutyl tribromide (Zr (i-C) ₄ H ₉ )Br ₃ ) Zirconium n-butyl tribromide (Zr (C) ₄ H ₉ )Br ₃ )；

Hafnium trimethyl chloride (HfCl (CH) ₃ ) ₃ ) Hafnium triethylchloride (HfCl (CH) ₃ CH ₂ ) ₃ ) Hafnium triisobutyl chloride (HfCl (i-C) ₄ H ₉ ) ₃ ) Tri-n-butyl hafnium chloride (HfCl (C) ₄ H ₉ ) ₃ ) Hafnium dimethyl dichloride (HfCl) ₂ (CH ₃ ) ₂ ) Hafnium diethyl dichloride (HfCl) ₂ (CH ₃ CH ₂ ) ₂ ) Hafnium diisobutyl dichloride (HfCl) ₂ (i-C ₄ H ₉ ) ₂ ) Tri-n-butyl hafnium chloride (HfCl (C) ₄ H ₉ ) ₃ ) Hafnium methyltrichloride (Hf (CH) ₃ )Cl ₃ ) Hafnium ethyl trichloride (Hf (CH) ₃ CH ₂ )Cl ₃ ) Hafnium isobutyl trichloride (Hf (i-C) ₄ H ₉ )Cl ₃ ) N-butyl hafnium trichloride (Hf (C) ₄ H ₉ )Cl ₃ )；

Hafnium trimethyl bromide (HfBr (CH) ₃ ) ₃ ) Hafnium triethylbromide (HfBr (CH) ₃ CH ₂ ) ₃ ) Hafnium triisobutyl bromide (HfBr (i-C) ₄ H ₉ ) ₃ ) Tri-n-butyl hafnium bromide (HfBr (C) ₄ H ₉ ) ₃ ) Hafnium dimethyl bromide (HfBr) ₂ (CH ₃ ) ₂ ) Hafnium diethyl bromide (HfBr) ₂ (CH ₃ CH ₂ ) ₂ ) Hafnium diisobutyl dibromide (HfBr) ₂ (i-C ₄ H ₉ ) ₂ ) Tri-n-butyl hafnium bromide (HfBr (C) ₄ H ₉ ) ₃ ) Hafnium methyl tribromide (Hf (CH) ₃ )Br ₃ ) Second stepHafnium tribromide (Hf (CH) ₃ CH ₂ )Br ₃ ) Hafnium isobutyl tribromide (Hf (i-C) ₄ H ₉ )Br ₃ ) N-butyl hafnium tribromide (Hf (C) ₄ H ₉ )Br ₃ )。

Examples of the group IVB metal alkoxyhalides include titanium trimethoxychloride (TiCl (OCH) ₃ ) ₃ ) Titanium triethoxy chloride (TiCl (OCH) ₃ CH ₂ ) ₃ ) Titanium triisobutoxide chloride (TiCl (i-OC) ₄ H ₉ ) ₃ ) Titanium tri-n-butoxide chloride (TiCl (OC) ₄ H ₉ ) ₃ ) Titanium dimethoxy dichloride (TiCl) ₂ (OCH ₃ ) ₂ ) Titanium diethoxy dichloride (TiCl) ₂ (OCH ₃ CH ₂ ) ₂ ) Titanium diisobutoxide dichloride (TiCl) ₂ (i-OC ₄ H ₉ ) ₂ ) Titanium tri-n-butoxide chloride (TiCl (OC) ₄ H ₉ ) ₃ ) Titanium methoxytrichloride (Ti (OCH) ₃ )Cl ₃ ) Titanium ethoxytrichloride (Ti (OCH) ₃ CH ₂ )Cl ₃ ) Titanium isobutoxy trichloride (Ti (i-C) ₄ H ₉ )Cl ₃ ) Titanium n-butoxide trichloride (Ti (OC) ₄ H ₉ )Cl ₃ )；

Trimethoxytitanium bromide (TiBr (OCH) ₃ ) ₃ ) Titanium triethoxybromide (TiBr (OCH) ₃ CH ₂ ) ₃ ) Titanium triisobutoxide bromide (TiBr (i-OC) ₄ H ₉ ) ₃ ) Titanium tri-n-butoxide bromide (TiBr (OC) ₄ H ₉ ) ₃ ) Titanium dimethoxy dibromide (TiBr) ₂ (OCH ₃ ) ₂ ) Titanium diethoxy dibromide (TiBr) ₂ (OCH ₃ CH ₂ ) ₂ ) Titanium diisobutoxy dibromide (TiBr) ₂ (i-OC ₄ H ₉ ) ₂ ) Titanium tri-n-butoxide bromide (TiBr (OC) ₄ H ₉ ) ₃ ) Titanium methoxytribromide (Ti (OCH) ₃ )Br ₃ ) Titanium ethoxytribromide (Ti (OCH) ₃ CH ₂ )Br ₃ ) Titanium isobutoxy tribromide (Ti (i-C) ₄ H ₉ )Br ₃ )、n-Butoxytitanium tribromide (Ti (OC) ₄ H ₉ )Br ₃ )；

Zirconium trimethoxychloride (ZrCl (OCH) ₃ ) ₃ ) Zirconium triethoxy chloride (ZrCl (OCH) ₃ CH ₂ ) ₃ ) Zirconium triisobutoxide chloride (ZrCl (i-OC) ₄ H ₉ ) ₃ ) Zirconium tri-n-butoxide chloride (ZrCl (OC) ₄ H ₉ ) ₃ ) Zirconium dimethoxy dichloride (ZrCl) ₂ (OCH ₃ ) ₂ ) Zirconium diethoxy dichloride (ZrCl) ₂ (OCH ₃ CH ₂ ) ₂ ) Zirconium diisobutoxy dichloride (ZrCl) ₂ (i-OC ₄ H ₉ ) ₂ ) Zirconium tri-n-butoxide chloride (ZrCl (OC) ₄ H ₉ ) ₃ ) Zirconium methoxytrichloride (Zr (OCH) ₃ )Cl ₃ ) Zirconium ethoxy trichloride (Zr (OCH) ₃ CH ₂ )Cl ₃ ) Zirconium isobutoxy trichloride (Zr (i-C) ₄ H ₉ )Cl ₃ ) Zirconium trichloride n-butoxy (Zr (OC) ₄ H ₉ )Cl ₃ )；

Zirconium trimethoxybromide (ZrBr (OCH) ₃ ) ₃ ) Zirconium triethoxy bromide (ZrBr (OCH) ₃ CH ₂ ) ₃ ) Zirconium triisobutoxide bromide (ZrBr (i-OC) ₄ H ₉ ) ₃ ) Zirconium tri-n-butoxide bromide (ZrBr (OC) ₄ H ₉ ) ₃ ) Zirconium dimethoxy dibromide (ZrBr) ₂ (OCH ₃ ) ₂ ) Zirconium diethoxy dibromide (ZrBr) ₂ (OCH ₃ CH ₂ ) ₂ ) Zirconium diisobutoxy dibromide (ZrBr) ₂ (i-OC ₄ H ₉ ) ₂ ) Zirconium tri-n-butoxide bromide (ZrBr (OC) ₄ H ₉ ) ₃ ) Zirconium methoxytribromide (Zr (OCH) ₃ )Br ₃ ) Zirconium ethoxy tribromide (Zr (OCH) ₃ CH ₂ )Br ₃ ) Zirconium isobutoxy tribromide (Zr (i-C) ₄ H ₉ )Br ₃ ) Zirconium tribromide of n-butoxy (Zr (OC) ₄ H ₉ )Br ₃ )；

Hafnium trimethoxychloride (HfCl (OCH) ₃ ) ₃ ) Hafnium triethoxide chloride (HfCl ]OCH ₃ CH ₂ ) ₃ ) Hafnium triisobutoxide chloride (HfCl (i-OC) ₄ H ₉ ) ₃ ) Hafnium tri-n-butoxide chloride (HfCl (OC) ₄ H ₉ ) ₃ ) Hafnium dimethoxy dichloride (HfCl) ₂ (OCH ₃ ) ₂ ) Hafnium diethoxy dichloride (HfCl) ₂ (OCH ₃ CH ₂ ) ₂ ) Hafnium diisobutoxy dichloride (HfCl) ₂ (i-OC ₄ H ₉ ) ₂ ) Hafnium tri-n-butoxide chloride (HfCl (OC) ₄ H ₉ ) ₃ ) Hafnium methoxytrichloride (Hf (OCH) ₃ )Cl ₃ ) Hafnium ethoxy trichloride (Hf (OCH) ₃ CH ₂ )Cl ₃ ) Hafnium isobutoxy trichloride (Hf (i-C) ₄ H ₉ )Cl ₃ ) Hafnium n-butoxide trichloride (Hf (OC) ₄ H ₉ )Cl ₃ )；

Hafnium trimethoxybromide (HfBr (OCH) ₃ ) ₃ ) Hafnium triethoxy bromide (HfBr (OCH) ₃ CH ₂ ) ₃ ) Hafnium triisobutoxide bromide (HfBr (i-OC) ₄ H ₉ ) ₃ ) Hafnium tri-n-butoxide bromide (HfBr (OC) ₄ H ₉ ) ₃ ) Hafnium dimethoxy dibromide (HfBr) ₂ (OCH ₃ ) ₂ ) Hafnium di-ethoxy dibromide (HfBr) ₂ (OCH ₃ CH ₂ ) ₂ ) Hafnium diisobutylbromide (HfBr) ₂ (i-OC ₄ H ₉ ) ₂ ) Hafnium tri-n-butoxide bromide (HfBr (OC) ₄ H ₉ ) ₃ ) Hafnium methoxytribromide (Hf (OCH) ₃ )Br ₃ ) Hafnium ethoxy tribromide (Hf (OCH) ₃ CH ₂ )Br ₃ ) Hafnium isobutoxy tribromide (Hf (i-C) ₄ H ₉ )Br ₃ ) Hafnium n-butoxide tribromide (Hf (OC) ₄ H ₉ )Br ₃ )。

As the group IVB metal compound, the group IVB metal halide is preferable, and TiCl is more preferable ₄ 、TiBr ₄ 、ZrCl ₄ 、ZrBr ₄ 、HfCl ₄ And HfBr ₄ TiCl is most preferred ₄ And ZrCl ₄ 。

These group IVB metal compounds may be used singly or in combination of plural kinds in any ratio.

When the chemical treatment agent is in a liquid state at normal temperature, the chemical treatment reaction may be directly performed using the chemical treatment agent. When the chemical treatment agent is solid at ordinary temperature, it is preferable to use the chemical treatment agent in the form of a solution for the convenience of metering and handling. Of course, when the chemical treatment agent is in a liquid state at normal temperature, the chemical treatment agent may be used in a solution form as needed, and is not particularly limited.

In preparing the solution of the chemical treatment agent, the solvent used at this time is not particularly limited as long as it can dissolve the chemical treatment agent and does not destroy (e.g., dissolve) the existing carrier structure of the carrier.

Specifically, C may be mentioned _5-12 Alkanes, C _5-12 Cycloalkane, halogenated C _5-12 Alkanes and halogenated C _5-12 Examples of cycloalkanes include pentane, hexane, heptane, octane, nonane, decane, undecane, dodecane, cyclopentane, cyclohexane, cycloheptane, cyclooctane, chloropentane, chlorohexane, chloroheptane, chlorooctane, chlorononane, chlorodecane, chloroundecane, chlorododecane, and chlorocyclohexane, and among these, pentane, hexane, decane, and cyclohexane are preferable, and hexane is most preferable.

These solvents may be used alone or in combination of plural kinds in an arbitrary ratio.

The concentration of the chemical treatment agent in the solution is not particularly limited, and may be appropriately selected as required, as long as it can perform the chemical treatment reaction with a predetermined amount of the chemical treatment agent. As described above, if the chemical treatment agent is in a liquid state, the treatment may be performed directly using the chemical treatment agent, but it may be used after being prepared as a solution of the chemical treatment agent.

In general, the molar concentration of the chemical treatment agent in the solution thereof is generally set to 0.01 to 1.0mol/L, but is not limited thereto.

As a method of performing the chemical treatment, for example, in the case of using a solid chemical treatment agent (such as zirconium tetrachloride), a solution of the chemical treatment agent is first prepared, and then a predetermined amount of the chemical treatment agent is added (preferably dropwise) to the magnesium support to be treated; in the case of using a liquid chemical treatment agent such as titanium tetrachloride, a predetermined amount of the chemical treatment agent may be directly (but may also be after preparation into a solution) added (preferably dropwise) to the magnesium carrier to be treated, and the chemical treatment reaction (with stirring if necessary) may be carried out at a reaction temperature of-30 to 60 ℃ (preferably-20 to 30 ℃) for 0.5 to 24 hours, preferably 1 to 8 hours, more preferably 2 to 6 hours, followed by filtration, washing and drying.

According to the present invention, the filtration, washing and drying may be performed using a conventional method, wherein the washing solvent may be the same solvent as used in dissolving the chemical treatment agent. The washing is generally carried out 1 to 8 times, preferably 2 to 6 times, most preferably 2 to 4 times.

According to the invention, as the chemical treatment agent, the amount is such that the molar ratio of the magnesium compound (solid) in terms of Mg element to the chemical treatment agent in terms of group ivb metal (such as Ti element) reaches 1:0.01-1, preferably 1:0.01 to 0.50, more preferably 1:0.10-0.30.

According to a particular embodiment of the present invention, the process for preparing a magnesium compound supported non-metallocene catalyst of the present invention further comprises a step of pre-treating the magnesium support with a co-chemical treatment agent selected from aluminoxane, alkyl aluminum or any combination thereof, before treating the magnesium support with the chemical treatment agent (pre-treatment step). Then, the chemical treatment is performed with the chemical treatment agent in exactly the same manner as described above, except that the magnesium carrier is replaced with the pretreated magnesium carrier.

The chemical assistant is specifically described below.

According to the present invention, examples of the auxiliary chemical agent include aluminoxane and aluminum alkyl.

As the aluminoxane, a ratio ofExamples thereof include linear aluminoxanes represented by the following general formula (I): (R) (R) Al- (Al (R) -O) _n -O-Al (R), and a cyclic aluminoxane represented by the following general formula (II): - (Al (R) -O-) _n+2 -。

In the above formula, the radicals R are identical or different (preferably identical) from one another and are each independently selected from C ₁ -C ₈ Alkyl groups, preferably methyl, ethyl and isobutyl, most preferably methyl; n is any integer in the range of 1-50, preferably any integer in the range of 10-30.

As the aluminoxane, methylaluminoxane, ethylaluminoxane, isobutylaluminoxane and n-butylaluminoxane are preferred, and methylaluminoxane and isobutylaluminoxane are further preferred.

These aluminoxanes may be used singly or in combination of plural kinds in any ratio.

Examples of the aluminum alkyl include compounds represented by the following general formula (III):

Al(R) ₃ (III)

wherein the radicals R are identical or different (preferably identical) from one another and are each independently selected from C ₁ -C ₈ Alkyl groups, preferably methyl, ethyl and isobutyl, most preferably methyl.

Specifically, examples of the aluminum alkyl include trimethylaluminum (Al (CH) ₃ ) ₃ ) Triethylaluminum (Al (CH) ₃ CH ₂ ) ₃ ) Tripropylaluminum (Al (C) ₃ H ₇ ) ₃ ) Triisobutylaluminum (Al (i-C) ₄ H ₉ ) ₃ ) Tri-n-butyl aluminum (Al (C) ₄ H ₉ ) ₃ ) Triisopentylaluminum (Al (i-C) ₅ H ₁₁ ) ₃ ) Tri-n-pentylaluminum (Al (C) ₅ H ₁₁ ) ₃ ) Trihexylaluminum (Al (C) ₆ H ₁₃ ) ₃ ) Triisohexylaluminum (Al (i-C) ₆ H ₁₃ ) ₃ ) Diethyl methylaluminum (Al (CH) ₃ )(CH ₃ CH ₂ ) ₂ ) And dimethylethylaluminum (Al (CH) ₃ CH ₂ )(CH ₃ ) ₂ ) Among these, trimethylaluminum, triethylaluminum, tripropylaluminum and triisobutylaluminum are preferable, and triethylaluminum and triisobutylaluminum are most preferable.

These aluminum alkyls may be used alone or in combination of plural kinds in any ratio.

According to the present invention, the auxiliary chemical agent may be the aluminoxane alone or the aluminum alkyl alone, but may be any mixture of the aluminoxane and the aluminum alkyl. The proportions of the components in the mixture are not particularly limited, and may be arbitrarily selected as needed.

According to the invention, the chemical-assisted treatment agent is generally used in the form of a solution. In preparing the solution of the co-chemical treatment agent, the solvent used at this time is not particularly limited as long as it can dissolve the co-chemical treatment agent and does not destroy (e.g., dissolve) the existing carrier structure of the carrier.

Specifically, examples of the solvent include C _5-12 Alkanes and halogenated C _5-12 Examples of alkanes include pentane, hexane, heptane, octane, nonane, decane, undecane, dodecane, cyclohexane, chloropentane, chlorohexane, chloroheptane, chlorooctane, chlorononane, chlorodecane, chloroundecane, chlorododecane, chlorocyclohexane and the like, and among these, pentane, hexane, decane and cyclohexane are preferable, and hexane is most preferable.

The concentration of the auxiliary chemical treatment agent in the solution is not particularly limited, and may be appropriately selected as required, as long as it can perform the pretreatment with a predetermined amount of the auxiliary chemical treatment agent.

As a method for carrying out the pretreatment, for example, there may be mentioned a method in which a solution of the co-chemical treatment agent is first prepared, then the co-chemical treatment agent solution (containing a predetermined amount of the co-chemical treatment agent) is metered (preferably dropwise) into the carrier to be pretreated with the co-chemical treatment agent at a temperature of-30 to 60 ℃ (preferably-20 to 30 ℃) or the carrier is metered into the co-chemical treatment agent solution, thereby forming a reaction mixture, and the reaction mixture is allowed to react for 1 to 8 hours, preferably 2 to 6 hours, and most preferably 3 to 4 hours (with stirring as necessary). The pretreated product obtained is then isolated from the reaction mixture by filtration, washing (1 to 6 times, preferably 1 to 3 times) and optionally drying, or alternatively, it may be used directly in the form of a mixture without such isolation for the subsequent reaction step. At this time, since a certain amount of solvent is already contained in the mixed solution, the amount of solvent involved in the subsequent reaction step can be reduced accordingly.

According to the present invention, as the co-chemical treatment agent, the amount is used such that the molar ratio of the magnesium compound (solid) in terms of Mg element to the co-chemical treatment agent in terms of Al element is 1:0-1.0, preferably 1:0-0.5, more preferably 1:0.1-0.5.

According to the invention, the modified support is treated with a non-metallocene ligand or a non-metallocene complex to obtain the magnesium compound supported non-metallocene catalyst.

According to the present invention, the term "non-metallocene complex" is a single-site olefin polymerization catalyst with respect to a metallocene catalyst, which does not contain cyclopentadienyl groups such as a metallocene ring, fluorene ring or indene ring or derivatives thereof in the structure, and which is capable of exhibiting olefin polymerization catalytic activity when combined with a cocatalyst such as those described below (thus the non-metallocene complex is sometimes also referred to as a non-metallocene olefin polymerizable complex). The compound comprises a central metal atom and at least one multidentate ligand (preferably a tridentate ligand or more) bound to the central metal atom in a coordination bond, and the term "non-metallocene ligand" is the aforementioned multidentate ligand.

According to the invention, the non-metallocene ligand is selected from compounds having the following chemical formula:

According to the present invention, the groups A, D and E (coordinating groups) in the compound form a coordination bond by the coordination reaction of the coordinating atoms (e.g., N, O, S, se and P heteroatoms) contained therein with the group IVB metal atoms contained in the group IVB metal compound used as the chemical treating agent in the present invention, thereby forming a complex having the group IVB metal atom as the central metal atom M (i.e., the non-metallocene complex of the present invention).

In a more specific embodiment, the non-metallocene ligand is selected from the group consisting of compounds (a) and (B) having the following chemical formulas:

in a more specific embodiment, the non-metallocene ligand is selected from the group consisting of compounds (A-1) to (A-4) and compounds (B-1) to (B-4) having the following chemical structural formula:

in all of the above chemical structural formulas,

q is 0 or 1;

d is 0 or 1;

a is selected from oxygen atom, sulfur atom, selenium atom,-NR ²³ R ²⁴ 、-N(O)R ²⁵ R ²⁶ 、-PR ²⁸ R ²⁹ 、-P(O)R ³⁰ OR ³¹ Of sulfone, sulfoxide or-Se (O) R ³⁹ Wherein N, O, S, se and P are each an atom for coordination;

b is selected from nitrogen atom, nitrogen-containing group, phosphorus-containing group or C ₁ －C ₃₀ A hydrocarbon group;

d is selected from nitrogen atom, oxygen atom, sulfur atom, selenium atom, phosphorus atom, nitrogen-containing group, phosphorus-containing group, C ₁ －C ₃₀ A hydrocarbyl, sulfone, or sulfoxide group, wherein N, O, S, se and P are each a coordinating atom;

e is selected from a nitrogen-containing group, an oxygen-containing group, a sulfur-containing group, a selenium-containing group, a phosphorus-containing group, or a cyano group (-CN), wherein N, O, S, se and P are each a coordinating atom;

f is selected from a nitrogen atom, a nitrogen-containing group, an oxygen-containing group, a sulfur-containing group, a selenium-containing group, or a phosphorus-containing group, wherein N, O, S, se and P are each a coordinating atom;

g is selected from C ₁ －C ₃₀ Hydrocarbyl, substituted C ₁ －C ₃₀ Hydrocarbon or inert functional groups;

y is selected from a nitrogen-containing group, an oxygen-containing group, a sulfur-containing group, a selenium-containing group, or a phosphorus-containing group, wherein N, O, S, se and P are each an atom for coordination;

z is selected from nitrogen-containing groups, oxygen-containing groups, sulfur-containing groups, selenium-containing groups, phosphorus-containing groups or cyano groups (-CN), for example, -NR ²³ R ²⁴ 、-N(O)R ²⁵ R ²⁶ 、-PR ²⁸ R ²⁹ 、-P(O)R ³⁰ R ³¹ 、-OR ³⁴ 、-SR ³⁵ 、-S(O)R ³⁶ 、-SeR ³⁸ or-Se (O) R ³⁹ Wherein N, O, S, se and P are each an atom for coordination;

-represents a single bond or a double bond;

-represents a covalent bond or an ionic bond.

R ¹ To R ⁴ 、R ⁶ To R ²¹ Each independently selected from hydrogen, C ₁ －C ₃₀ Hydrocarbyl, substituted C ₁ －C ₃₀ Hydrocarbyl (of which youSelected from halogenated hydrocarbon groups, e.g. -CH ₂ Cl and-CH ₂ CH ₂ Cl) or inert functional groups. R is R ²² To R ³⁶ 、R ³⁸ And R is ³⁹ Each independently selected from hydrogen, C ₁ －C ₃₀ Hydrocarbyl or substituted C ₁ －C ₃₀ Hydrocarbyl (of which halogenated hydrocarbyl groups such as-CH are preferred ₂ Cl and-CH ₂ CH ₂ Cl). The above groups may be the same or different from each other, wherein adjacent groups such as R ¹ And R is R ² ，R ⁶ And R is R ⁷ ，R ⁷ And R is R ⁸ ，R ⁸ And R is R ⁹ ，R ¹³ And R is R ¹⁴ ，R ¹⁴ And R is R ¹⁵ ，R ¹⁵ And R is R ¹⁶ ，R ¹⁸ And R is R ¹⁹ ，R ¹⁹ And R is R ²⁰ ，R ²⁰ And R is R ²¹ ，R ²³ And R is R ²⁴ Or R ²⁵ And R is R ²⁶ Etc. may be bonded to each other to form a bond or a ring, preferably an aromatic ring, such as an unsubstituted benzene ring or a ring having 1 to 4C ₁ －C ₃₀ Hydrocarbyl or substituted C ₁ －C ₃₀ Hydrocarbyl (of which halogenated hydrocarbyl groups such as-CH are preferred ₂ Cl and-CH ₂ CH ₂ Cl) substituted benzene ring.

R ⁵ Selected from lone pair electrons on nitrogen, hydrogen, C ₁ －C ₃₀ Hydrocarbyl, substituted C ₁ －C ₃₀ Hydrocarbon groups, oxygen-containing groups, sulfur-containing groups, nitrogen-containing groups, selenium-containing groups, or phosphorus-containing groups. When R is ⁵ R in the case of an oxygen-containing group, a sulfur-containing group, a nitrogen-containing group, a selenium-containing group or a phosphorus-containing group ⁵ The N, O, S, P and Se of (a) may be used as the coordinating atom (coordinating with the central metal atom M).

In the context of the present invention, examples of inert functional groups include groups selected from the group consisting of halogen, oxygen-containing groups, nitrogen-containing groups, silicon-containing groups, germanium-containing groups, sulfur-containing groups, tin-containing groups, C ₁ －C ₁₀ Ester or nitro (-NO) ₂ ) At least one of (C) and the like, but generally does not include C ₁ －C ₃₀ Hydrocarbyl and substituted C ₁ －C ₃₀ A hydrocarbon group.

In the context of the present invention, the inert functional group has the following characteristics, limited by the chemical structure of the multidentate ligand of the present invention:

(1) Does not interfere with the coordination process of the group A, D, E, F, Y or Z with the central metal atom M, and

(2) The ability to coordinate to the central metal atom M is lower than the A, D, E, F, Y and Z groups and does not displace the existing coordination of these groups to the central metal atom M.

In accordance with the invention, in all of the formulae described above, any adjacent two or more groups, such as R, as the case may be ²¹ With a group Z, or R ¹³ With a group Y, which may be bound to each other to form a ring, preferably C comprising heteroatoms from said group Z or Y ₆ －C ₃₀ Aromatic heterocyclic ring such as pyridine ring and the like, wherein the aromatic heterocyclic ring is optionally substituted with 1 or more groups selected from C ₁ －C ₃₀ Hydrocarbyl and substituted C ₁ －C ₃₀ The substituent of the hydrocarbon group is substituted.

In the context of the present invention,

the halogen is selected from F, cl, br or I. The nitrogen-containing group is selected from-NR ²³ R ²⁴ 、-T-NR ²³ R ²⁴ or-N (O) R ²⁵ R ²⁶ . The phosphorus-containing group is selected from->-PR ²⁸ R ²⁹ 、-P(O)R ³⁰ R ³¹ or-P (O) R ³² (OR ³³ ). The oxygen-containing group is selected from the group consisting of hydroxy, -OR ³⁴ and-T-OR ³⁴ . The sulfur-containing group is selected from the group consisting of-SR ³⁵ 、-T-SR ³⁵ 、-S(O)R ³⁶ or-T-SO ₂ R ³⁷ . The selenium-containing group is selected from the group consisting of-Ser ³⁸ 、-T-SeR ³⁸ 、-Se(O)R ³⁹ or-T-Se (O) R ³⁹ . The radicals T being selected from C ₁ －C ₃₀ Hydrocarbyl or substituted C ₁ －C ₃₀ A hydrocarbon group. The R is ³⁷ Selected from hydrogen, C ₁ －C ₃₀ Hydrocarbyl or substituted C ₁ －C ₃₀ A hydrocarbon group.

In the context of the present invention, the C ₁ －C ₃₀ The hydrocarbon radical being selected from C ₁ －C ₃₀ Alkyl (preferably C ₁ －C ₆ Alkyl, such as isobutyl), C ₇ －C ₃₀ Alkylaryl groups (such as tolyl, xylyl, diisobutylphenyl, and the like), C ₇ －C ₃₀ Aralkyl (e.g. benzyl), C ₃ －C ₃₀ Cyclic alkyl, C ₂ －C ₃₀ Alkenyl, C ₂ －C ₃₀ Alkynyl, C ₆ －C ₃₀ Aryl (e.g., phenyl, naphthyl, anthracenyl, etc.), C ₈ －C ₃₀ Condensed ring groups or C ₄ －C ₃₀ A heterocyclic group, wherein the heterocyclic group contains 1 to 3 hetero atoms selected from nitrogen atoms, oxygen atoms, or sulfur atoms, such as pyridyl, pyrrolyl, furyl, thienyl, or the like.

According to the invention, in the context of the present invention, the said C, depending on the specific case of the relevant group to which it is bound ₁ －C ₃₀ Hydrocarbyl is sometimes referred to as C ₁ －C ₃₀ Hydrocarbadiyl (divalent radicals, otherwise known as C ₁ －C ₃₀ Hydrocarbylene) or C ₁ －C ₃₀ Hydrocarbon tri (trivalent groups), as will be apparent to those skilled in the art.

In the context of the present invention, the substituted C ₁ －C ₃₀ Hydrocarbyl refers to C bearing one or more inert substituents ₁ －C ₃₀ A hydrocarbon group. By inert substituents is meant that these substituents are substituted for the aforementioned coordinating groups (meaning the aforementioned groups A, D, E, F, Y and Z, or optionally also including R ⁵ ) The coordination process with the central metal atom M (i.e., the aforementioned group IVB metal atom) is not substantially disturbed; in other words, these substituents have no ability or opportunity (e.g., affected by steric hindrance, etc.) to undergo a coordination reaction with the IVB-group metal atom to form a coordination bond, as limited by the chemical structure of the ligand of the present invention. In general, the inert substituents are selected from halogen or C ₁ －C ₃₀ Alkyl (preferably C ₁ －C ₆ Alkyl groups such as isobutyl).

In the context of the present invention, the silicon-containing group is selected from the group consisting of-SiR ⁴² R ⁴³ R ⁴⁴ or-T-SiR ⁴⁵ The method comprises the steps of carrying out a first treatment on the surface of the The germanium-containing group is selected from-GeR ⁴⁶ R ⁴⁷ R ⁴⁸ or-T-GeR ⁴⁹ The method comprises the steps of carrying out a first treatment on the surface of the The tin-containing group is selected from-SnR ⁵⁰ R ⁵¹ R ⁵² 、-T-SnR ⁵³ or-T-Sn (O) R ⁵⁴ The method comprises the steps of carrying out a first treatment on the surface of the And said R is ⁴² To R ⁵⁴ Each independently selected from hydrogen, C as described above ₁ －C ₃₀ Hydrocarbyl or substituted C as previously described ₁ －C ₃₀ Hydrocarbyl groups, which may be the same or different from each other, wherein adjacent groups may be bonded to each other to form a bond or a ring. Wherein the radicals T are as defined above.

Examples of the non-metallocene ligand include the following compounds:

the non-metallocene ligand is preferably selected from the following compounds:

the non-metallocene ligand is further preferably selected from the following compounds:

more preferably, the non-metallocene ligand is selected from the following compounds:

these non-metallocene ligands may be used singly or in combination of plural kinds in any ratio.

According to the present invention, the non-metallocene ligand is not a diether compound commonly used in the art as an electron donor compound.

The non-metallocene ligand may be manufactured according to any method known to those skilled in the art. For details of the manufacturing method, see, for example, WO03/010207 and Chinese patents ZL01126323.7 and ZL02110844.7, etc., the entire contents of which are incorporated herein by reference.

According to the invention, the non-metallocene ligands are used, if necessary, in the form of solutions for metering and ease of handling.

In preparing the solution of the non-metallocene ligand, the solvent used at this time is not particularly limited as long as the non-metallocene ligand can be dissolved and the existing support structure of the support is not destroyed (e.g., dissolved). Examples of the solvent include C _6-12 Aromatic hydrocarbons, halogenated C _6-12 Aromatic hydrocarbon, C _5-12 Alkanes, halogenated C _1-10 One or more of alkanes, esters, and ethers. Specific examples thereof include toluene, xylene, trimethylbenzene, ethylbenzene, diethylbenzene, chlorotoluene, chloroethylbenzene, bromotoluene, bromoethylbenzene, pentane, hexane, heptane, octane, nonane, decane, undecane,Dodecane, dichloromethane, dichloroethane, ethyl acetate, tetrahydrofuran, and the like. Of these, C is preferred _6-12 Aromatic hydrocarbon, C _5-12 Alkanes, tetrahydrofuran and dichloromethane.

In dissolving the non-metallocene ligand, stirring may be used as required (the stirring speed is generally 10 to 500 rpm).

According to the present invention, the proportion of the non-metallocene ligand to the solvent is generally 0.02 to 0.30 g/ml, preferably 0.05 to 0.15 g/ml, but is not limited thereto in some cases.

According to the invention, the non-metallocene complex is selected from compounds having the following chemical formula:

according to the chemical formula, the ligands forming a coordination bond with the central metal atom M include n groups X and M multidentate ligands (structural formulas in brackets). Depending on the chemical structure of the polydentate ligand, groups A, D and E (coordinating groups) form a coordination bond with the central metal atom M through the coordinating atoms (e.g., N, O, S, se and P heteroatoms) contained in these groups.

According to the invention, the total number of negative charges carried by all ligands (including the group X and the multidentate ligand) is the same absolute value as the positive charge carried by the central metal atom M.

In a more specific embodiment, the non-metallocene complex is selected from the group consisting of compounds (a) and (B) having the following chemical structural formula.

In a more specific embodiment, the non-metallocene complex is selected from the group consisting of compounds (A-1) to (A-4) and compounds (B-1) to (B-4) having the following chemical structural formula.

In all of the above chemical structural formulas,

q is 0 or 1;

d is 0 or 1;

m is 1, 2 or 3;

m is a central metal atom selected from the group consisting of metal atoms of groups III to XI of the periodic Table of elements, preferably a metal atom of group IVB, for example, ti (IV), zr (IV), hf (IV), cr (III), fe (III), ni (II), pd (II) or Co (II);

n is 1, 2, 3 or 4, depending on the valence of the central metal atom M;

x is selected from halogen, hydrogen atom, C ₁ －C ₃₀ Hydrocarbyl, substituted C ₁ －C ₃₀ A hydrocarbon group, an oxygen-containing group, a nitrogen-containing group, a sulfur-containing group, a boron-containing group, an aluminum-containing group, a phosphorus-containing group, a silicon-containing group, a germanium-containing group, or a tin-containing group, and a plurality of X's may be the same or different, or may be bonded or looped to each other;

y is selected from an oxygen atom, a nitrogen-containing group, an oxygen-containing group, a sulfur-containing group, a selenium-containing group, or a phosphorus-containing group, wherein N, O, S, se and P are each an atom for coordination;

-represents a single bond or a double bond;

-represents a covalent bond or an ionic bond;

-represents a coordinate bond, a covalent bond or an ionic bond.

R ¹ To R ⁴ 、R ⁶ To R ²¹ Each independently selected from hydrogen, C ₁ －C ₃₀ Hydrocarbyl, substituted C ₁ －C ₃₀ Hydrocarbyl (of which halogenated hydrocarbyl groups such as-CH are preferred ₂ Cl and-CH ₂ CH ₂ Cl) or inert functional groups. R is R ²² To R ³⁶ 、R ³⁸ And R is ³⁹ Each independently selected from hydrogen, C ₁ －C ₃₀ Hydrocarbyl or substituted C ₁ －C ₃₀ Hydrocarbyl (of which halogenated hydrocarbyl groups such as-CH are preferred ₂ Cl and-CH ₂ CH ₂ Cl). The above groups may be mutually relatedThe same or different, wherein adjacent groups such as R ¹ And R is R ² ，R ⁶ And R is R ⁷ ，R ⁷ And R is R ⁸ ，R ⁸ And R is R ⁹ ，R ¹³ And R is R ¹⁴ ，R ¹⁴ And R is R ¹⁵ ，R ¹⁵ And R is R ¹⁶ ，R ¹⁸ And R is R ¹⁹ ，R ¹⁹ And R is R ²⁰ ，R ²⁰ And R is R ²¹ ，R ²³ And R is R ²⁴ Or R ²⁵ And R is R ²⁶ Etc. may be bonded to each other to form a bond or a ring, preferably an aromatic ring, such as an unsubstituted benzene ring or a ring having 1 to 4C ₁ －C ₃₀ Hydrocarbyl or substituted C ₁ －C ₃₀ Hydrocarbyl (of which halogenated hydrocarbyl groups such as-CH are preferred ₂ Cl and-CH ₂ CH ₂ Cl) substituted benzene ring, and

In the context of the present invention, the halogen is selected from F, cl, br or I. The nitrogen-containing group is selected from-NR ²³ R ²⁴ 、-T-NR ²³ R ²⁴ or-N (O) R ²⁵ R ²⁶ . The phosphorus-containing group is selected from->-PR ²⁸ R ²⁹ 、-P(O)R ³⁰ R ³¹ or-P (O) R ³² (OR ³³ ). The oxygen-containing group is selected from the group consisting of hydroxy, -OR ³⁴ and-T-OR ³⁴ . The sulfur-containing group is selected from the group consisting of-SR ³⁵ 、-T-SR ³⁵ 、-S(O)R ³⁶ or-T-SO ₂ R ³⁷ . The selenium-containing group is selected from the group consisting of-Ser ³⁸ 、-T-SeR ³⁸ 、-Se(O)R ³⁹ or-T-Se (O) R ³⁹ . The radicals T being selected from C ₁ －C ₃₀ Hydrocarbyl or substituted C ₁ －C ₃₀ A hydrocarbon group. The R is ³⁷ Selected from hydrogen, C ₁ －C ₃₀ Hydrocarbyl or substituted C ₁ －C ₃₀ A hydrocarbon group.

In the context of the present invention, the C ₁ －C ₃₀ The hydrocarbon radical being selected from C ₁ －C ₃₀ Alkyl (preferably C ₁ －C ₆ Alkyl, such as isobutyl), C ₇ －C ₃₀ Alkylaryl groups (e.g., tolyl, xylyl,Diisobutylphenyl group and the like), C ₇ －C ₃₀ Aralkyl (e.g. benzyl), C ₃ －C ₃₀ Cyclic alkyl, C ₂ －C ₃₀ Alkenyl, C ₂ －C ₃₀ Alkynyl, C ₆ －C ₃₀ Aryl (e.g., phenyl, naphthyl, anthracenyl, etc.), C ₈ －C ₃₀ Condensed ring groups or C ₄ －C ₃₀ A heterocyclic group, wherein the heterocyclic group contains 1 to 3 hetero atoms selected from nitrogen atoms, oxygen atoms, or sulfur atoms, such as pyridyl, pyrrolyl, furyl, thienyl, or the like.

In the context of the present invention, the substituted C ₁ －C ₃₀ Hydrocarbyl refers to C bearing one or more inert substituents ₁ －C ₃₀ A hydrocarbon group. By inert substituents is meant that these substituents are substituted for the aforementioned coordinating groups (meaning the aforementioned groups A, D, E, F, Y and Z, or optionally also including the group R ⁵ ) No substantial interference with the coordination process of the central metal atom M; in other words, these substituents have no ability or opportunity (e.g., affected by steric hindrance, etc.) to undergo a coordination reaction with the central metal atom M to form a coordination bond, as limited by the chemical structure of the polydentate ligand of the present invention. In general, the inert substituents are selected, for example, from halogen or C ₁ －C ₃₀ Alkyl (preferably C ₁ －C ₆ Alkyl groups such as isobutyl).

In the context of the present invention, the boron-containing group is selected from BF ₄ ^- 、(C ₆ F ₅ ) ₄ B ^- Or (R) ⁴⁰ BAr ₃ ) ^- The method comprises the steps of carrying out a first treatment on the surface of the The aluminum-containing group is selected from aluminum alkyls, alPh ₄ ^- 、AlF ₄ ^- 、AlCl ₄ ^- 、AlBr ₄ ^- 、AlI ₄ ^- Or R is ⁴¹ AlAr ₃ ^- The method comprises the steps of carrying out a first treatment on the surface of the The silicon-containing group is selected from-SiR ⁴² R ⁴³ R ⁴⁴ or-T-SiR ⁴⁵ The method comprises the steps of carrying out a first treatment on the surface of the The germanium-containing group is selected from-GeR ⁴⁶ R ⁴⁷ R ⁴⁸ or-T-GeR ⁴⁹ The method comprises the steps of carrying out a first treatment on the surface of the The tin-containing group is selected from-SnR ⁵⁰ R ⁵¹ R ⁵² 、-T-SnR ⁵³ or-T-Sn (O) R ⁵⁴ Wherein Ar represents C ₆ －C ₃₀ Aryl groups. R is R ⁴⁰ To R ⁵⁴ Each independently selected from hydrogen, C as described above ₁ －C ₃₀ Hydrocarbyl or substituted C as previously described ₁ －C ₃₀ Hydrocarbyl groups, which may be the same or different from each other, wherein adjacent groups may be bonded to each other to form a bond or a ring. Wherein the radicals T are as defined above.

Examples of the non-metallocene complex include the following compounds:

the non-metallocene complex is preferably selected from the following compounds:

the non-metallocene complex is further preferably selected from the following compounds:

more preferably, the non-metallocene complex is selected from the following compounds:

these non-metallocene complexes may be used singly or in combination of plural kinds in any ratio.

According to the present invention, the polydentate ligand in the non-metallocene complex is not a diether compound commonly used in the art as an electron donor compound.

The non-metallocene complex or the polydentate ligand may be manufactured according to any method known to those skilled in the art. For details of the manufacturing method, see, for example, WO03/010207 and Chinese patents ZL01126323.7 and ZL02110844.7, etc., the entire contents of which are incorporated herein by reference.

According to the invention, the non-metallocene complexes are used, if necessary, in the form of solutions for metering and ease of operation.

In preparing the solution of the non-metallocene complex, the solvent used in this case is not particularly limited as long as the non-metallocene complex can be dissolved and the existing carrier structure of the carrier is not destroyed (e.g., dissolved). Examples of the solvent include C _6-12 Aromatic hydrocarbons, halogenated C _6-12 Aromatic hydrocarbon, C _5-12 Alkanes, halogenated C _1-10 One or more of alkanes, esters, and ethers. Specific examples thereof include toluene, xylene, trimethylbenzene, ethylbenzene, diethylbenzene, chlorotoluene, chloroethylbenzene, bromotoluene, bromoethylbenzene, pentane, hexane, heptane, octane, nonane, decane, undecane, dodecane, methylene chloride, dichloroethane, ethyl acetate, tetrahydrofuran, and the like. Of these, C is preferred _6-12 Aromatic hydrocarbon, C _5-12 Alkanes, dichloromethane, and tetrahydrofuran.

In dissolving the non-metallocene complex, stirring may be used as required (the stirring speed is generally 10 to 500 rpm).

According to the invention, it is convenient, but sometimes not limited, for the proportion of the non-metallocene complex to the solvent to be generally from 0.02 to 0.30 g/ml, preferably from 0.05 to 0.15 g/ml.

As a method for carrying out the treatment with the non-metallocene ligand or the non-metallocene complex, for example, there may be mentioned a method comprising preparing a solution of the non-metallocene ligand or the non-metallocene complex first, then adding the solution (containing a predetermined amount of the non-metallocene ligand or the non-metallocene complex) to the carrier to be treated, preferably dropwise, at a temperature of-30 to 60 ℃ (preferably-20 to 30 ℃) or adding the carrier to the solution, and carrying out the treatment reaction (if necessary with stirring) at a reaction temperature of-30 to 60 ℃ (preferably-20 to 30 ℃) for 0.5 to 24 hours, preferably 1 to 8 hours, more preferably 2 to 6 hours, and then filtering, optionally washing and drying.

According to the present invention, the filtration, washing and drying may be performed using conventional methods, wherein the washing solvent may be the same solvent as used in dissolving the non-metallocene ligand or non-metallocene complex. The washing is generally carried out 1 to 8 times, preferably 2 to 6 times, most preferably 2 to 4 times.

According to the invention, the molar ratio of the magnesium compound to the non-metallocene complex, calculated as Mg element, is 1:0.01-1, preferably 1:0.04 to 0.4, more preferably 1:0.08-0.2.

According to the invention, the molar ratio of the magnesium compound to the non-metallocene ligand, calculated as Mg element, is 1:0.0001-1, preferably 1:0.0002 to 0.4, more preferably 1:0.0008 to 0.2, further preferably 1:0.001-0.1.

It is known to those skilled in the art that all of the process steps described above are preferably carried out under substantially anhydrous and oxygen-free conditions. As used herein, substantially anhydrous and oxygen-free means that the water and oxygen content of the system is continuously less than 10ppm. Moreover, the magnesium compound supported non-metallocene catalyst of the invention is usually required to be preserved under a micro positive pressure under a closed condition for standby after preparation.

According to the invention, the molar ratio of the magnesium compound to the non-metallocene complex, calculated as Mg element, is 1:0.01-1, preferably 1:0.04 to 0.4, more preferably 1:0.08-0.2, the molar ratio of the magnesium compound to the non-metallocene ligand calculated as Mg element is 1:0.0001-1, preferably 1:0.0002 to 0.4, more preferably 1:0.0008 to 0.2, further preferably 1:0.001-0.1, the ratio of magnesium compound (solid) to tetrahydrofuran being 1mol:0.5 to 10L, preferably 1mol:1 to 8L, more preferably 1mol: 2-6L, wherein the volume ratio of the precipitant to tetrahydrofuran is 1:0.2 to 5, preferably 1:0.5 to 2, more preferably 1:0.8 to 1.5, and the molar ratio of the magnesium compound calculated as Mg element to the chemical treatment agent calculated as group ivb metal element is 1:0.01-1, preferably 1:0.01 to 0.50, more preferably 1:0.10-0.30.

In one embodiment, the present invention also relates to a supported non-metallocene catalyst (sometimes also referred to as a supported non-metallocene olefin polymerization catalyst) produced by the aforementioned method of producing a magnesium compound supported non-metallocene catalyst.

In a further embodiment, the present invention relates to a process for homo/copolymerizing olefins, wherein the magnesium compound-supported non-metallocene catalyst of the present invention is used as a catalyst for olefin polymerization, and the olefin is homo-polymerized or copolymerized.

The olefin homo/copolymerization method according to the present invention is not particularly limited, and other matters (such as a polymerization reactor, an olefin amount, a catalyst, an addition mode of olefin, etc.) which are not explicitly described below may be directly applied to those conventionally known in the art, and the descriptions thereof are omitted here.

According to the homo/copolymerization method of the invention, the magnesium compound supported non-metallocene catalyst of the invention is used as a main catalyst, and one or more selected from aluminoxane, alkyl aluminum, halogenated alkyl aluminum, borane, alkyl boron and alkyl boron ammonium salt are used as cocatalysts to homo or copolymerize olefin.

The main catalyst and the cocatalyst can be added into the polymerization reaction system by adding the main catalyst, then adding the cocatalyst, or adding the cocatalyst, then adding the main catalyst, or adding the main catalyst and the cocatalyst after contact and mixing, or adding the main catalyst and the cocatalyst simultaneously. When the main catalyst and the cocatalyst are added respectively, the main catalyst and the cocatalyst can be added in the same feeding pipeline in sequence or in multiple feeding pipelines in sequence, and when the main catalyst and the cocatalyst are added respectively and simultaneously, multiple feeding pipelines are selected. For continuous polymerization, it is preferable that the multiple feed lines are fed simultaneously and continuously, while for batch polymerization, it is preferable that the two are mixed first and then fed together in the same feed line, or that the cocatalyst is fed first and then the main catalyst is fed in the same feed line.

The reaction mode of the olefin homo/copolymerization process according to the present invention is not particularly limited, and those known in the art can be employed, and examples thereof include a slurry process, an emulsion process, a solution process, a bulk process, and a gas phase process, and among them, a slurry process and a gas phase process are preferable.

According to the present invention, examples of the olefin include C ₂ ～C ₁₀ Mono-olefins, di-olefins, cyclic olefins and other ethylenically unsaturated compounds.

Specifically, as the C ₂ ～C ₁₀ Examples of the mono-olefin include ethylene, propylene, 1-butene, 1-hexene, 1-heptene, 4-methyl-1-pentene, 1-octene, 1-decene, 1-undecene, 1-dodecene, and styrene; examples of the cyclic olefin include 1-cyclopentene and norbornene; examples of the diolefin include 1, 4-butadiene, 2, 5-pentadiene, 1, 6-hexadiene, norbornadiene, and 1, 7-octadiene; examples of the other ethylenically unsaturated compound include vinyl acetate and (meth) acrylate. Among them, homopolymerization of ethylene or copolymerization of ethylene with propylene, 1-butene or 1-hexene is preferable.

According to the invention, homopolymerization refers to the polymerization of only one of said olefins, whereas copolymerization refers to the polymerization between two or more of said olefins.

According to the invention, the cocatalyst is selected from the group consisting of alumoxanes, alkyl aluminums, haloalkylaluminum, boroalkanes, alkyl boron and alkyl boron ammonium salts, of which alumoxanes and alkyl aluminums are preferred.

Examples of the aluminoxane include linear aluminoxanes represented by the following general formula (I-1): (R) (R) Al- (Al (R) -O) _n -O-Al (R) (R), and a cyclic aluminoxane represented by the following general formula (II-1): - (Al (R) -O-) _n+2 -。

As the aluminoxane, methylaluminoxane, ethylaluminoxane, isobutylaluminoxane and n-butylaluminoxane are preferred, methylaluminoxane and isobutylaluminoxane are further preferred, and methylaluminoxane is most preferred.

Examples of the aluminum alkyl include compounds represented by the following general formula (III-1):

Al(R) ₃ (III-1)

Specifically, examples of the aluminum alkyl include trimethylaluminum (Al (CH) ₃ ) ₃ ) Triethylaluminum (Al (CH) ₃ CH ₂ ) ₃ ) Tripropylaluminum (Al (C) ₃ H ₇ ) ₃ ) Triisobutylaluminum (Al (i-C) ₄ H ₉ ) ₃ ) Tri-n-butyl aluminum (Al (C) ₄ H ₉ ) ₃ ) Triisopentylaluminum (Al (i-C) ₅ H ₁₁ ) ₃ ) Tri-n-pentylaluminum (Al (C) ₅ H ₁₁ ) ₃ ) Trihexylaluminum (Al (C) ₆ H ₁₃ ) ₃ ) Triisohexylaluminum (Al (i-C) ₆ H ₁₃ ) ₃ ) Diethyl methylaluminum (Al (CH) ₃ )(CH ₃ CH ₂ ) ₂ ) And dimethylethylaluminum (Al (CH) ₃ CH ₂ )(CH ₃ ) ₂ ) Among them, trimethylaluminum, triethylaluminum, tripropylaluminum and triisobutylaluminum are preferable, triethylaluminum and triisobutylaluminum are further preferable, and triethylaluminum is most preferable.

As the haloalkylaluminum, the borane, the alkylboron and the alkylboron ammonium salt, those conventionally used in the art may be directly used without particular limitation.

In addition, according to the present invention, one kind of the above-mentioned cocatalysts may be used alone, or a plurality of kinds of the above-mentioned cocatalysts may be used in combination in an arbitrary ratio as required, without particular limitation.

According to the present invention, depending on the reaction mode of the olefin homo/copolymerization method, a solvent for polymerization may be used.

As the solvent for polymerization, those conventionally used in the art for homo/copolymerization of olefins can be used, and there is no particular limitation.

Examples of the solvent for polymerization include C _4-10 Alkanes (such as butane, pentane, hexane, heptane, octane, nonane, decane, etc.), halogenated C' s _1-10 Alkanes (such as methylene chloride), aromatic hydrocarbon solvents (such as toluene and xylene), ether solvents (such as diethyl ether or tetrahydrofuran), ester solvents (such as ethyl acetate), and ketone solvents (such as acetone), and the like. Among them, hexane is preferably used as the solvent for polymerization.

These polymerization solvents may be used alone or in combination of plural kinds in an arbitrary ratio.

According to the present invention, the polymerization pressure of the olefin homo/copolymerization method is generally 0.1 to 10MPa, preferably 0.1 to 4MPa, more preferably 1 to 3MPa, but is not limited thereto in some cases. According to the present invention, the polymerization temperature is generally-40 to 200 ℃, preferably 10 to 100 ℃, more preferably 40 to 90 ℃, but is not limited thereto in some cases.

In addition, according to the present invention, the olefin homo/copolymerization process may be performed in the presence of hydrogen or in the absence of hydrogen. The partial pressure of hydrogen, when present, may be 0.01% to 99%, preferably 0.01% to 50%, of the polymerization pressure, but is sometimes not limited thereto.

In carrying out the olefin homo/copolymerization process according to the invention, the molar ratio of the cocatalyst, calculated as aluminum or boron, to the magnesium compound supported non-metallocene catalyst, calculated as group IVB metal, is generally 1:1 to 1000, preferably 1:1 to 500, more preferably 1:10 to 500, but is not limited thereto in some cases.

Examples

The present invention will be described in further detail with reference to examples, but the present invention is not limited to these examples.

Polymer bulk Density (in g/cm) ³ ) The measurement of (C) is performed by referring to the national standard GB 1636-79.

The content of IVB group metal (such as Ti) and Mg element in the magnesium compound supported non-metallocene catalyst is determined by ICP-AES method, and the content of non-metallocene ligand is determined by elemental analysis method.

The polymerization activity of the catalyst was calculated as follows: after the polymerization reaction is completed, the polymerization product in the reaction vessel is filtered and dried, and then the mass of the polymerization product is weighed, and the polymerization activity of the catalyst (unit is kg polymer/g catalyst or kg polymer/gCat) is expressed as a ratio of the mass of the polymerization product divided by the mass of the magnesium compound-supported non-metallocene catalyst used.

The viscosity average molecular weight of the polymer was calculated as follows: the intrinsic viscosity of the polymer was measured according to the standard ASTM D4020-00 using a high temperature dilution Ubbelohde viscometer (capillary inner diameter of 0.44mm, constant temperature bath medium of 300 # silicone oil, solvent for dilution of decalin, measurement temperature of 135 ℃ C.), and then the viscosity average molecular weight Mv of the polymer was calculated according to the following formula.

Mv＝5.37×10 ⁴ ×[η] ^1.37

Wherein η is the intrinsic viscosity.

The determination of tetrahydrofuran content in the magnesium carrier is as follows: quantitative analysis is carried out by capillary gas chromatography, an Agilent 6890N-type gas chromatograph is adopted as an instrument, and an automatic sampler and a hydrogen Flame Ionization Detector (FID) are arranged; the column was DB-1 (30 m. Times.0.32 mm. Times.0.25 μm), gas chromatography operating conditions: temperature: the gasification chamber is 250 ℃, the column temperature is 60 ℃, and the detector is 250 ℃; the carrier gas is high-purity nitrogen; the flow rate of the carrier gas is 1.4ml/min; the split ratio was 70:1, a step of; the sample injection amount is 0.2ml; the reagents for the test were chromatographically pure tetrahydrofuran and ethanol, the relative retention time determined tetrahydrofuran as 2.951min, ethanol as 2.426min, the correction factor determined tetrahydrofuran as 3.5182, and ethanol as 5.1289. Three tetrahydrofuran solutions with different concentrations to be detected in ethanol are accurately prepared as standard samples, correction factors of all components are calculated by an area normalization method under the condition of gas chromatography, and a relation diagram of tetrahydrofuran concentration indexes and actual concentrations is prepared. Accurately weighing 0.5g of magnesium carrier, adding 20ml of ethanol reagent, stirring and dissolving for 30min at normal temperature, filtering, and collecting filtrate for use. Under the condition of gas chromatography, adding quantitative filtrate into an automatic sampler, automatically performing program sample injection measurement, dividing the area of the tetrahydrofuran peak to be detected by the normalized total area to calculate the index of the tetrahydrofuran concentration of the filtrate, substituting the index into a relation diagram to obtain the actual tetrahydrofuran concentration, and finally obtaining the tetrahydrofuran content in the magnesium carrier after conversion.

Example 1

2.5g of anhydrous magnesium chloride (MgCl) of magnesium compound was weighed out ₂ ) Adding a certain amount of tetrahydrofuran, heating to 60deg.C for dissolving to obtain magnesium compound solution, adding precipitant hexane to precipitate, filtering, collecting solid product, washing hexane for 2 times, each time the hexane amount is the same as the previous amount, and absolute pressure of the obtained solid product at 45deg.CDrying under vacuum with a force of 10mBar for 6 hours and then drying under vacuum with a pressure of 10mBar for 8 hours at 80℃to obtain a magnesium support with a tetrahydrofuran content of 0.17% by weight.

25ml of hexane solvent are weighed into the magnesium support and titanium tetrachloride (TiCl) is added dropwise with stirring for 15min ₄ ) After a hexane solution of the chemical treating agent was reacted at 30℃for 4 hours, the mixture was filtered, washed with hexane 3 times, 25ml each time, and vacuum-dried at 30℃and an absolute pressure of 10mBar for 12 hours to obtain a modified support.

Measuring 25ml of hexane solvent, adding the hexane solvent into the modified carrier, adding a hexane solution of a non-metallocene ligand under stirring, reacting for 4 hours at 30 ℃, filtering, washing hexane for 3 times, each time 25ml, and finally vacuumizing and drying for 6 hours at 30 ℃ and absolute pressure of 10mBar to obtain the magnesium compound supported non-metallocene catalyst.

Wherein: the non-metallocene ligand adopts the structural formula asIs a compound of (a).

The mixture ratio is as follows: the mixture ratio of the magnesium compound and the hexane solvent for dissolving the magnesium compound is 1mol:4L; the molar ratio of magnesium compound to non-metallocene ligand is 1:0.004; the volume ratio of the precipitant hexane to tetrahydrofuran is 1:1, a step of; the molar ratio of the magnesium compound to the titanium tetrachloride chemical treating agent is 1:0.20.

the catalyst was designated CAT-1.

Example 2

Substantially the same as in example 1, but with the following modifications:

the non-metallocene ligand is changed to a non-metallocene complex having the following structure.

Wherein: the molar ratio of the magnesium compound to the non-metallocene complex is 1:0.1;

the catalyst was designated CAT-2.

Example 3

Substantially the same as in example 1, but with the following modifications:

before the magnesium support is treated with the chemical treatment agent, the magnesium support is treated with a catalyst selected from triethylaluminum (Al (C) ₂ H ₅ ) ₃ ) Pre-treating the magnesium support with a co-chemical treatment agent.

25ml of hexane solvent was weighed and added to the magnesium support obtained in example 1, and the auxiliary chemical treatment agent triethylaluminum (Al (C) was added dropwise over 15 minutes with stirring ₂ H ₅ ) ₃ ) After stirring the reaction for 1 hour, filtering, washing with hexane 2 times, 25ml each time, and vacuum drying at 60 ℃ and absolute pressure of 5mBar for 6 hours to obtain a pretreated magnesium carrier. The resulting pretreated magnesium support was used in a subsequent chemical treatment step.

Wherein, the mol ratio of the magnesium compound to the auxiliary chemical treating agent is 1:0.35.

the catalyst was designated CAT-3.

Example 4

Substantially the same as in example 1, but with the following modifications:

the magnesium compound solution was dried under vacuum of 10mBar at a temperature of 35 ℃ and an absolute pressure without using a precipitant for 10 hours, and then dried under vacuum of 10mBar at a temperature of 90 ℃ and an absolute pressure for 6 hours, to obtain a magnesium carrier, wherein the tetrahydrofuran content was 0.11wt%.

The catalyst was designated CAT-4.

Example 5

Substantially the same as in example 1, but with the following modifications:

the obtained solid product was dried at 40℃under vacuum of 10mBar under absolute pressure for 8 hours, and then dried at 70℃under vacuum of 10mBar under absolute pressure for 8 hours to obtain a magnesium carrier having a tetrahydrofuran content of 0.30% by weight.

The catalyst was designated CAT-5.

Comparative example A

Substantially the same as in example 1, but with the following modifications:

adding a magnesium compound solution into a precipitator hexane to precipitate, filtering, washing for 2 times, wherein the dosage of each precipitator is the same as the dosage of the precipitator, uniformly heating the obtained solid product to 110 ℃, and drying for 24 hours under the vacuum of absolute pressure 10mBar to obtain a magnesium carrier, wherein the tetrahydrofuran content is 0.02wt%.

The catalyst was designated CAT-A.

Comparative example B

Substantially the same as in example 1, but with the following modifications:

the obtained solid product was dried under vacuum at 20℃and an absolute pressure of 10mBar for 1 hour to obtain a magnesium support having a tetrahydrofuran content of 1.35% by weight.

The catalyst was designated CAT-B.

Example 6

5g of magnesium compound magnesium ethoxide (Mg (OC) ₂ H ₅ ) ₂ ) Adding a certain amount of tetrahydrofuran, heating to 60 ℃ for dissolution to obtain a magnesium compound solution, adding a precipitator decane to precipitate, filtering, collecting a solid product, washing decane for 2 times, drying the obtained solid product for 4 hours under the vacuum of 50 ℃ and absolute pressure of 5mBar and then drying the obtained solid product for 12 hours under the vacuum of 90 ℃ and absolute pressure of 5mBar, thereby obtaining a magnesium carrier, wherein the tetrahydrofuran content is 0.24 weight percent.

50ml of decane solvent was weighed out, added to the magnesium carrier, and titanium tetrachloride (TiCl) was added dropwise with stirring for 15min ₄ ) The decane solution of the chemical treating agent was reacted at 30℃for 4 hours, then filtered, and decane was washed 3 times, 50ml each time, and dried under vacuum at 60℃and an absolute pressure of 5mBar for 16 hours to obtain a modified carrier.

50ml of decane solvent is measured, the decane solvent is added into the modified carrier, the decane solution of the non-metallocene ligand is added under stirring, after the reaction is carried out for 4 hours at 30 ℃, the reaction is filtered, the decane is washed 3 times, 25ml of decane is used each time, and finally the non-metallocene catalyst loaded by the magnesium compound is obtained after the reaction is dried for 6 hours under the conditions of 60 ℃ and absolute pressure of 5mBar in a vacuum.

The mixture ratio is as follows: the ratio of the magnesium compound to the tetrahydrofuran is 1mol:6L; the molar ratio of magnesium compound to non-metallocene ligand is 1:0.01; the volume ratio of the precipitant decane to tetrahydrofuran is 1:1.4; the molar ratio of the magnesium compound to the titanium tetrachloride chemical treating agent is 1:0.26.

the catalyst was designated CAT-6.

Comparative example C

Substantially the same as in example 6, but with the following modifications:

the obtained solid product was heated uniformly to 110℃and dried under vacuum at an absolute pressure of 5mBar for 24 hours to obtain a magnesium support having a tetrahydrofuran content of 0.04% by weight.

The catalyst was designated CAT-C.

Comparative example D

Substantially the same as in example 6, but with the following modifications:

the obtained solid product was dried under vacuum at 20℃and an absolute pressure of 5mBar for 1 hour to obtain a magnesium support having a tetrahydrofuran content of 1.33% by weight.

The catalyst was designated CAT-D.

Example 7 (application example)

Weighing the magnesium compound supported non-metallocene catalysts CAT-1-6 and CAT-A-D respectively, and carrying out ethylene homopolymerization and copolymerization with a cocatalyst (triethylaluminum, methylaluminoxane or triisobutylaluminum) under the following conditions respectively to prepare the ultra-high molecular weight polyethylene.

The homopolymerization is as follows: 5L polymerization autoclave, slurry polymerization process, 2.5L hexane solvent, total polymerization pressure 0.8MPa, polymerization temperature 85 ℃, hydrogen partial pressure 0.2MPa, reaction time 2h. Firstly, 2.5L of hexane is added into a polymerization autoclave, stirring is started, then 20mg of magnesium compound supported non-metallocene catalyst and cocatalyst mixture is added, then hydrogen is added to 0.2MPa, and finally ethylene is continuously introduced to ensure that the total polymerization pressure is constant at 0.8MPa. And after the reaction is finished, the gas in the kettle is exhausted, the polymer in the kettle is discharged, and the mass is weighed after the drying. The specific cases of the polymerization reaction and the polymerization evaluation results are shown in table 1.

The copolymerization is as follows: 5L polymerization autoclave, slurry polymerization process, 2.5L hexane solvent, total polymerization pressure 0.8MPa, polymerization temperature 85 ℃, hydrogen partial pressure 0.2MPa, reaction time 2h. Firstly, 2.5L of hexane is added into a polymerization autoclave, stirring is started, then 20mg of magnesium compound supported non-metallocene catalyst and cocatalyst mixture is added, 50g of hexene-1 comonomer is added at one time, then hydrogen is added to 0.2MPa, and finally ethylene is continuously introduced to ensure that the total polymerization pressure is constant at 0.8MPa. And after the reaction is finished, the gas in the kettle is exhausted, the polymer in the kettle is discharged, and the mass is weighed after the drying. The specific cases of the polymerization reaction and the polymerization evaluation results are shown in table 1.

The preparation of the ultra-high molecular weight polyethylene is polymerized as follows: 5L polymerization autoclave, slurry polymerization process, 2.5L hexane solvent, total polymerization pressure 0.5MPa, polymerization temperature 70℃and reaction time 6h. Firstly, adding 2.5L of hexane into a polymerization autoclave, starting stirring, then adding 20mg of magnesium compound supported non-metallocene catalyst and cocatalyst mixture, wherein the molar ratio of the cocatalyst to the catalyst active metal is 100, and finally continuously introducing ethylene to ensure that the total polymerization pressure is constant at 0.5MPa. And after the reaction is finished, the gas in the kettle is exhausted, the polymer in the kettle is discharged, and the mass is weighed after the drying. The specific cases of the polymerization reaction and the polymerization evaluation results are shown in table 2.

TABLE 1 list of effects of magnesium Compound Supported non-metallocene catalysts for olefin polymerization

TABLE 2 polymerization effect list of magnesium Compound Supported non-metallocene catalyst for preparing ultra-high molecular weight polyethylene

As is evident from the comparison of the effects obtained by the numbers 1 and 3 in Table 1, the copolymerization effect of the catalyst is remarkable, that is, the copolymerization activity of the catalyst is higher than that of the homopolymerization activity, and the copolymerization reaction can increase the bulk density of the polymer, that is, improve the particle morphology of the polymer.

As can be seen from the comparison of the effects obtained by the numbers 1 and 2 in Table 1, the polymerization performance obtained at the conditions of the molar ratio of the cocatalyst required for the polymerization process to the catalyst active metal of 50 and 100 is equivalent, thereby indicating that the catalyst provided by the present invention requires a smaller amount of cocatalyst for olefin polymerization.

As can be seen from the comparison of the numbers 1, 2, 6-8 and 9-12 in Table 1 and the numbers 1, 2 and 3, 4 in Table 2, the catalyst obtained by controlling the tetrahydrofuran content in the magnesium carrier during the preparation of the catalyst of the present invention has better catalytic activity, polymer bulk density and ultra-high molecular weight polyethylene viscosity average molecular weight than the catalyst obtained when the magnesium carrier is completely dried or the tetrahydrofuran content is higher.

While the embodiments of the present invention have been described in detail with reference to the examples, it should be noted that the scope of the present invention is not limited by the embodiments, but is defined by the appended claims. Those skilled in the art can make appropriate modifications to these embodiments without departing from the technical spirit and scope of the present invention, and it is apparent that these modified embodiments are also included in the scope of the present invention.

Claims

1. A preparation method of a magnesium compound supported non-metallocene catalyst comprises the following steps:

a step of drying the magnesium compound solution, or adding a precipitant to the magnesium compound solution and drying the obtained solid product to obtain a magnesium carrier, wherein the tetrahydrofuran content in the magnesium carrier is 0.10-0.35wt%;

a step of treating the modified support with a non-metallocene ligand or a non-metallocene complex to obtain the magnesium compound supported non-metallocene catalyst,

the step of obtaining the magnesium carrier is carried out in the following manner:

drying the magnesium compound solution at 35-55deg.C under vacuum of 5-50mBar for 4-12 hr, then at 70-90deg.C under vacuum of 5-50mBar for 2-8 hr to obtain magnesium carrier,

or adding a precipitant into the magnesium compound solution, optionally after washing, drying the obtained solid product at 35-55deg.C under vacuum of 5-50mBar absolute pressure for 4-12 hr, then at 70-90deg.C under vacuum of 5-50mBar absolute pressure for 2-8 hr to obtain the magnesium carrier,

the IVB metal compound is selected from TiCl ₄ 、TiBr ₄ 、ZrCl ₄ 、ZrBr ₄ 、HfCl ₄ And HfBr ₄ One or more of the following.

2. The method of preparing according to claim 1, further comprising the step of pre-treating the magnesium support with a co-chemical treatment agent selected from the group consisting of alumoxane, aluminum alkyls, or any combination thereof, prior to treating the magnesium support with the chemical treatment agent.

3. The production method according to claim 1 or 2, wherein the magnesium compound is selected from one or more of magnesium halide, alkoxymagnesium, alkylmagnesium halide and alkylalkoxymagnesium.

4. The process according to claim 1, wherein the non-metallocene ligand is selected from one or more of the compounds (A-1) to (A-4) and the compounds (B-1) to (B-4) having the following chemical structural formula:

in all of the above chemical formulas,

q is 0 or 1;

d is 0 or 1;

e is selected from a nitrogen-containing group, an oxygen-containing group, a sulfur-containing group, a selenium-containing group, a phosphorus-containing group, or a cyano group, wherein N, O, S, se and P are each a coordinating atom;

Z is selected from a nitrogen-containing group, an oxygen-containing group, a sulfur-containing group, a selenium-containing group, a phosphorus-containing group, or a cyano group, wherein N, O, S, se and P are each a coordinating atom;

-represents a covalent bond or an ionic bond;

R ¹ to R ⁴ 、R ⁶ To R ²¹ Each independently selected from hydrogen, C ₁ －C ₃₀ Hydrocarbyl, substituted C ₁ －C ₃₀ Hydrocarbyl or inert functional group, R ²² To R ³¹ 、R ³⁹ Each independently selected from hydrogen, C ₁ －C ₃₀ Hydrocarbyl or substituted C ₁ －C ₃₀ Hydrocarbyl groups, which may be the same or different from each other, wherein adjacent groups may be bonded to each other to form an aromatic ring;

the inert functional groups are selected from the group consisting of halogens, oxygen-containing groups, nitrogen-containing groups, silicon-containing groups, germanium-containing groups, sulfur-containing groups, tin-containing groups, C ₁ －C ₁₀ Ester groups and nitro groups;

R ⁵ selected from lone pair electrons on nitrogen, hydrogen, C ₁ －C ₃₀ Hydrocarbyl, substituted C ₁ －C ₃₀ Hydrocarbon groups, oxygen-containing groups, sulfur-containing groups, nitrogen-containing groups, selenium-containing groups, or phosphorus-containing groups; when R is ⁵ R in the case of an oxygen-containing group, a sulfur-containing group, a nitrogen-containing group, a selenium-containing group or a phosphorus-containing group ⁵ N, O, S, P and Se in (3) may be used as the coordinating atoms;

the substituted C ₁ －C ₃₀ The hydrocarbon radical being selected from the group consisting of with one or more halogens or C ₁ －C ₃₀ C with alkyl as substituent ₁ －C ₃₀ A hydrocarbon group.

5. A process according to claim 4, wherein,

The halogen is selected from F, cl, br or I;

the nitrogen-containing group is selected from-NR ²³ R ²⁴ 、-T-NR ²³ R ²⁴ or-N (O) R ²⁵ R ²⁶ ；

The phosphorus-containing groups are selected from-PR ²⁸ R ²⁹ 、-P(O)R ³⁰ R ³¹ or-P (O) R ³² (OR ³³ )；

The oxygen-containing group is selected from the group consisting of hydroxy, -OR ³⁴ and-T-OR ³⁴ ；

The sulfur-containing group is selected from the group consisting of-SR ³⁵ 、-T-SR ³⁵ 、-S(O)R ³⁶ or-T-SO ₂ R ³⁷ ；

The selenium-containing group is selected from the group consisting of-Ser ³⁸ 、-T-SeR ³⁸ 、-Se(O)R ³⁹ or-T-Se (O) R ³⁹ ；

The radicals T being selected from C ₁ －C ₃₀ Hydrocarbyl or substituted C ₁ －C ₃₀ A hydrocarbon group;

the R is ³² To R ³⁸ Selected from hydrogen, C ₁ －C ₃₀ Hydrocarbyl or substituted C ₁ －C ₃₀ A hydrocarbon group;

the C is ₁ －C ₃₀ The hydrocarbon radical being selected from C ₁ －C ₃₀ Alkyl, C ₇ －C ₃₀ Alkylaryl, C ₇ －C ₃₀ Aralkyl, C ₃ －C ₃₀ Cyclic alkyl, C ₂ －C ₃₀ Alkenyl, C ₂ －C ₃₀ Alkynyl, C ₆ －C ₃₀ Aryl, C ₈ －C ₃₀ Condensed ring groups or C ₄ －C ₃₀ A heterocyclic group, wherein the heterocyclic group contains 1 to 3 hetero atoms selected from a nitrogen atom, an oxygen atom or a sulfur atom;

the silicon-containing group is selected from-SiR ⁴² R ⁴³ R ⁴⁴ or-T-SiR ⁴⁵ ；

The germanium-containing group is selected from-GeR ⁴⁶ R ⁴⁷ R ⁴⁸ or-T-GeR ⁴⁹ ；

The tin-containing group is selected from-SnR ⁵⁰ R ⁵¹ R ⁵² 、-T-SnR ⁵³ or-T-Sn (O) R ⁵⁴ ；

The R is ⁴² To R ⁵⁴ Each independently selected from hydrogen, the foregoing C ₁ －C ₃₀ Hydrocarbyl or substituted C as previously described ₁ －C ₃₀ Hydrocarbyl radicals, which may be identical or different from one another, wherein adjacent radicals may be bonded to one another to form a bond or a ring, and

the radicals T are as defined above.

6. The process according to claim 1, wherein the non-metallocene complex is selected from one or more of the compounds (A-1) to (A-4) and the compounds (B-1) to (B-4) having the following chemical structural formula:

In all of the above chemical formulas,

q is 0 or 1;

d is 0 or 1;

m is 1, 2 or 3;

m is a metal atom selected from group IVB;

n is 1, 2, 3 or 4, depending on the valence of the central metal atom M;

-represents a covalent bond or an ionic bond;

-represents a coordinate bond, a covalent bond or an ionic bond;

the inert functional groups are selected from the group consisting of halogens, oxygen-containing groups, nitrogen-containing groups, silicon-containing groups, germanium-containing groups, sulfur-containing groups, tin-containing groups, C ₁ －C ₁₀ An ester group or a nitro group,

7. A process according to claim 6, wherein,

the halogen is selected from F, cl, br or I;

the C is ₁ －C ₃₀ The hydrocarbon radical being selected from C ₁ －C ₃₀ Alkyl, C ₇ －C ₃₀ Alkylaryl, C ₇ －C ₃₀ Aralkyl, C ₃ －C ₃₀ Cyclic alkyl, C ₂ －C ₃₀ Alkenyl, C ₂ －C ₃₀ Alkynyl, C ₆ －C ₃₀ Aryl, C ₈ －C ₃₀ Condensed ring groups orC ₄ －C ₃₀ A heterocyclic group, wherein the heterocyclic group contains 1 to 3 hetero atoms selected from a nitrogen atom, an oxygen atom or a sulfur atom;

the boron-containing group is selected from BF ₄ ^- 、(C ₆ F ₅ ) ₄ B ^- Or (R) ⁴⁰ BAr ₃ ) ^- ；

The aluminum-containing group is selected from aluminum alkyls, alPh ₄ ^- 、AlF ₄ ^- 、AlCl ₄ ^- 、AlBr ₄ ^- 、AlI ₄ ^- Or R is ⁴¹ AlAr ₃ ^- ；

Ar represents C ₆ －C ₃₀ An aryl group;

R ⁴⁰ to R ⁵⁴ Each independently selected from hydrogen, the foregoing C ₁ －C ₃₀ Hydrocarbyl or substituted C as previously described ₁ －C ₃₀ Hydrocarbyl groups, where the groups may be the same or different from each other, and where adjacent groups may be bonded to each other to form a bond or a ring, and

The radicals T are as defined above.

8. The process according to claim 1, wherein the precipitating agent is one or more selected from the group consisting of alkanes, cycloalkanes, haloalkanes and halocycloalkanes.

9. The process according to claim 1, wherein the IVB-group metal compound is selected from TiCl ₄ And ZrCl ₄ One or more of the following.

10. The process according to claim 1, wherein the molar ratio of the magnesium compound to the non-metallocene complex, calculated as Mg element, is 1:0.01-1, the molar ratio of the magnesium compound to the non-metallocene ligand calculated as Mg element is 1:0.0001-1, wherein the ratio of the magnesium compound to tetrahydrofuran is 1mol: 0.5-10L, wherein the volume ratio of the precipitant to tetrahydrofuran is 1:0.2 to 5, and the molar ratio of the magnesium compound calculated as Mg element to the chemical treatment agent calculated as group ivb metal element is 1:0.01-1.

11. The process according to claim 2, wherein the aluminoxane is one or more selected from the group consisting of methylaluminoxane, ethylaluminoxane, isobutylaluminoxane and n-butylaluminoxane, and the alkylaluminum is one or more selected from the group consisting of trimethylaluminum, triethylaluminum, tripropylaluminum, triisobutylaluminum, tri-n-butylaluminum, triisopentylaluminum, tri-n-pentylaluminum, trihexylaluminum, triisohexylaluminum, diethylmethylaluminum and dimethylethylaluminum.

12. The method according to claim 2 or 11, wherein the molar ratio of the magnesium compound in terms of Mg element to the co-chemical treatment agent in terms of Al element is 1:0-1.0.

13. The preparation method according to claim 1 or 2, characterized in that the magnesium compound is selected from magnesium chloride and/or ethoxymagnesium.

14. The method of claim 1, wherein the non-metallocene ligand is selected from one or more of the compounds having the following chemical formulas:

15. the process according to claim 1, wherein the non-metallocene complex is selected from one or more of the compounds having the following chemical structural formula:

16. the process according to claim 1, wherein the precipitant is one or more selected from the group consisting of pentane, hexane, heptane, octane, nonane, decane, cyclohexane, cyclopentane, cycloheptane, cyclodecane, cyclononane, dichloromethane, dichlorohexane, dichloroheptane, trichloromethane, trichloroethane, trichlorobutane, dibromomethane, dibromoethane, dibromoheptane, tribromomethane, tribromoethane, chlorobutane, chlorocyclopentane, chlorocyclohexane, chlorocycloheptane, chlorocyclooctane, chlorocyclononane, chlorocyclodecane, bromocyclopentane, bromocyclohexane, bromocycloheptane, bromocyclooctane, bromocyclononane and bromocyclodecane.

17. The process according to claim 1, wherein the molar ratio of the magnesium compound to the non-metallocene complex, calculated as Mg element, is 1:0.08-0.2, the molar ratio of the magnesium compound to the non-metallocene ligand calculated as Mg element is 1:0.001-0.1, the ratio of the magnesium compound to tetrahydrofuran is 1mol: 2-6L, wherein the volume ratio of the precipitant to tetrahydrofuran is 1:0.8 to 1.5, and the molar ratio of the magnesium compound calculated as Mg element to the chemical treatment agent calculated as group ivb metal element is 1:0.10-0.30.

18. The method according to claim 2, wherein the aluminoxane is one or more selected from the group consisting of methylaluminoxane and isobutylaluminoxane, and the alkylaluminum is one or more selected from the group consisting of trimethylaluminum, triethylaluminum, tripropylaluminum and triisobutylaluminum.

19. The method according to claim 2 or 11, wherein the molar ratio of the magnesium compound in terms of Mg element to the co-chemical treatment agent in terms of Al element is 1:0.1-0.5.